Directive Quick Reference

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s	server config
v	virtual host
d	directory
h	.htaccess
p	proxy section

C	Core
M	MPM
B	Base
E	Extension
X	Experimental
T	External

AcceptFilter `protocol` `accept_filter`		s	C
Configures optimizations for a Protocol's Listener Sockets
AcceptPathInfo On\|Off\|Default	Default	svdh	C
Resources accept trailing pathname information
AccessFileName `filename` [`filename`] ...	.htaccess	sv	C
Name of the distributed configuration file
Action `action-type` `cgi-script` [virtual]		svdh	B
Activates a CGI script for a particular handler or content-type
AddAlt `string` `file` [`file`] ...		svdh	B
Alternate text to display for a file, instead of an icon selected by filename
AddAltByEncoding `string` `MIME-encoding` [`MIME-encoding`] ...		svdh	B
Alternate text to display for a file instead of an icon selected by MIME-encoding
AddAltByType `string` `MIME-type` [`MIME-type`] ...		svdh	B
Alternate text to display for a file, instead of an icon selected by MIME content-type
AddCharset `charset` `extension` [`extension`] ...		svdh	B
Maps the given filename extensions to the specified content charset
AddDefaultCharset On\|Off\|`charset`	Off	svdh	C
Default charset parameter to be added when a response content-type is `text/plain` or `text/html`
AddDescription `string file` [`file`] ...		svdh	B
Description to display for a file
AddEncoding `encoding` `extension` [`extension`] ...		svdh	B
Maps the given filename extensions to the specified encoding type
AddHandler `handler-name` `extension` [`extension`] ...		svdh	B
Maps the filename extensions to the specified handler
AddIcon `icon` `name` [`name`] ...		svdh	B
Icon to display for a file selected by name
AddIconByEncoding `icon` `MIME-encoding` [`MIME-encoding`] ...		svdh	B
Icon to display next to files selected by MIME content-encoding
AddIconByType `icon` `MIME-type` [`MIME-type`] ...		svdh	B
Icon to display next to files selected by MIME content-type
AddInputFilter `filter`[;`filter`...] `extension` [`extension`] ...		svdh	B
Maps filename extensions to the filters that will process client requests
AddLanguage `language-tag` `extension` [`extension`] ...		svdh	B
Maps the given filename extension to the specified content language
AddModuleInfo `module-name` `string`		sv	E
Adds additional information to the module information displayed by the server-info handler
AddOutputFilter `filter`[;`filter`...] `extension` [`extension`] ...		svdh	B
Maps filename extensions to the filters that will process responses from the server
AddOutputFilterByType `filter`[;`filter`...] `media-type` [`media-type`] ...		svdh	B
assigns an output filter to a particular media-type
AddType `media-type` `extension` [`extension`] ...		svdh	B
Maps the given filename extensions onto the specified content type
Alias [`URL-path`] `file-path`\|`directory-path`		svd	B
Maps URLs to filesystem locations
AliasMatch `regex` `file-path`\|`directory-path`		sv	B
Maps URLs to filesystem locations using regular expressions
Allow from all\|`host`\|env=[!]`env-variable` [`host`\|env=[!]`env-variable`] ...		dh	E
Controls which hosts can access an area of the server
AllowCONNECT `port`[-`port`] [`port`[-`port`]] ...	443 563	sv	E
Ports that are allowed to `CONNECT` through the proxy
AllowEncodedSlashes On\|Off\|NoDecode	Off	sv	C
Determines whether encoded path separators in URLs are allowed to be passed through
AllowMethods reset\|HTTP-method [HTTP-method]...	reset	d	X
Restrict access to the listed HTTP methods
AllowOverride All\|None\|`directive-type` [`directive-type`] ...	None (2.3.9 and lat +	d	C
Types of directives that are allowed in `.htaccess` files
AllowOverrideList None\|`directive` [`directive-type`] ...	None	d	C
Individual directives that are allowed in `.htaccess` files
Anonymous `user` [`user`] ...		dh	E
Specifies userIDs that are allowed access without password verification
Anonymous_LogEmail On\|Off	On	dh	E
Sets whether the password entered will be logged in the error log
Anonymous_MustGiveEmail On\|Off	On	dh	E
Specifies whether blank passwords are allowed
Anonymous_NoUserID On\|Off	Off	dh	E
Sets whether the userID field may be empty
Anonymous_VerifyEmail On\|Off	Off	dh	E
Sets whether to check the password field for a correctly formatted email address
AsyncRequestWorkerFactor `factor`		s	M
Limit concurrent connections per process
AuthBasicAuthoritative On\|Off	On	dh	B
Sets whether authorization and authentication are passed to lower level modules
AuthBasicFake off\|`username` [`password`]		dh	B
Fake basic authentication using the given expressions for username and password
AuthBasicProvider `provider-name` [`provider-name`] ...	file	dh	B
Sets the authentication provider(s) for this location
AuthBasicUseDigestAlgorithm MD5\|Off	Off	dh	B
Check passwords against the authentication providers as if Digest Authentication was in force instead of Basic Authentication.
AuthDBDUserPWQuery `query`		d	E
SQL query to look up a password for a user
AuthDBDUserRealmQuery `query`		d	E
SQL query to look up a password hash for a user and realm.
AuthDBMGroupFile `file-path`		dh	E
Sets the name of the database file containing the list of user groups for authorization
AuthDBMType default\|SDBM\|GDBM\|NDBM\|DB	default	dh	E
Sets the type of database file that is used to store passwords
AuthDBMUserFile `file-path`		dh	E
Sets the name of a database file containing the list of users and passwords for authentication
AuthDigestAlgorithm MD5\|MD5-sess	MD5	dh	E
Selects the algorithm used to calculate the challenge and response hashes in digest authentication
AuthDigestDomain `URI` [`URI`] ...		dh	E
URIs that are in the same protection space for digest authentication
AuthDigestNonceLifetime `seconds`	300	dh	E
How long the server nonce is valid
AuthDigestProvider `provider-name` [`provider-name`] ...	file	dh	E
Sets the authentication provider(s) for this location
AuthDigestQop none\|auth\|auth-int [auth\|auth-int]	auth	dh	E
Determines the quality-of-protection to use in digest authentication
AuthDigestShmemSize `size`	1000	s	E
The amount of shared memory to allocate for keeping track of clients
AuthFormAuthoritative On\|Off	On	dh	B
Sets whether authorization and authentication are passed to lower level modules
AuthFormBody `fieldname`		d	B
The name of a form field carrying the body of the request to attempt on successful login
AuthFormDisableNoStore `On\|Off`	Off	d	B
Disable the CacheControl no-store header on the login page
AuthFormFakeBasicAuth `On\|Off`	Off	d	B
Fake a Basic Authentication header
AuthFormLocation `fieldname`		d	B
The name of a form field carrying a URL to redirect to on successful login
AuthFormLoginRequiredLocation `url`		d	B
The URL of the page to be redirected to should login be required
AuthFormLoginSuccessLocation `url`		d	B
The URL of the page to be redirected to should login be successful
AuthFormLogoutLocation `uri`		d	B
The URL to redirect to after a user has logged out
AuthFormMethod `fieldname`		d	B
The name of a form field carrying the method of the request to attempt on successful login
AuthFormMimetype `fieldname`		d	B
The name of a form field carrying the mimetype of the body of the request to attempt on successful login
AuthFormPassword `fieldname`		d	B
The name of a form field carrying the login password
AuthFormProvider `provider-name` [`provider-name`] ...	file	dh	B
Sets the authentication provider(s) for this location
AuthFormSitePassphrase `secret`		d	B
Bypass authentication checks for high traffic sites
AuthFormSize `size`		d	B
The largest size of the form in bytes that will be parsed for the login details
AuthFormUsername `fieldname`		d	B
The name of a form field carrying the login username
AuthGroupFile `file-path`		dh	B
Sets the name of a text file containing the list of user groups for authorization
AuthLDAPAuthorizePrefix prefix	AUTHORIZE_	dh	E
Specifies the prefix for environment variables set during authorization
AuthLDAPBindAuthoritative off\|on	on	dh	E
Determines if other authentication providers are used when a user can be mapped to a DN but the server cannot successfully bind with the user's credentials.
AuthLDAPBindDN distinguished-name		dh	E
Optional DN to use in binding to the LDAP server
AuthLDAPBindPassword password		dh	E
Password used in conjunction with the bind DN
AuthLDAPCharsetConfig file-path		s	E
Language to charset conversion configuration file
AuthLDAPCompareAsUser on\|off	off	dh	E
Use the authenticated user's credentials to perform authorization comparisons
AuthLDAPCompareDNOnServer on\|off	on	dh	E
Use the LDAP server to compare the DNs
AuthLDAPDereferenceAliases never\|searching\|finding\|always	always	dh	E
When will the module de-reference aliases
AuthLDAPGroupAttribute attribute	member uniquemember +	dh	E
LDAP attributes used to identify the user members of groups.
AuthLDAPGroupAttributeIsDN on\|off	on	dh	E
Use the DN of the client username when checking for group membership
AuthLDAPInitialBindAsUser off\|on	off	dh	E
Determines if the server does the initial DN lookup using the basic authentication users' own username, instead of anonymously or with hard-coded credentials for the server
AuthLDAPInitialBindPattern `regex` `substitution`	(.*) $1 (remote use +	dh	E
Specifies the transformation of the basic authentication username to be used when binding to the LDAP server to perform a DN lookup
AuthLDAPMaxSubGroupDepth `Number`	10	dh	E
Specifies the maximum sub-group nesting depth that will be evaluated before the user search is discontinued.
AuthLDAPRemoteUserAttribute uid		dh	E
Use the value of the attribute returned during the user query to set the REMOTE_USER environment variable
AuthLDAPRemoteUserIsDN on\|off	off	dh	E
Use the DN of the client username to set the REMOTE_USER environment variable
AuthLDAPSearchAsUser on\|off	off	dh	E
Use the authenticated user's credentials to perform authorization searches
AuthLDAPSubGroupAttribute attribute		dh	E
Specifies the attribute labels, one value per directive line, used to distinguish the members of the current group that are groups.
AuthLDAPSubGroupClass LdapObjectClass	groupOfNames groupO +	dh	E
Specifies which LDAP objectClass values identify directory objects that are groups during sub-group processing.
AuthLDAPUrl url [NONE\|SSL\|TLS\|STARTTLS]		dh	E
URL specifying the LDAP search parameters
AuthMerging Off \| And \| Or	Off	dh	B
Controls the manner in which each configuration section's authorization logic is combined with that of preceding configuration sections.
AuthName `auth-domain`		dh	B
Authorization realm for use in HTTP authentication
AuthnCacheContext `directory\|server\|custom-string`		d	B
Specify a context string for use in the cache key
AuthnCacheEnable		s	B
Enable Authn caching configured anywhere
AuthnCacheProvideFor `authn-provider` [...]		dh	B
Specify which authn provider(s) to cache for
AuthnCacheSOCache `provider-name[:provider-args]`		s	B
Select socache backend provider to use
AuthnCacheTimeout `timeout` (seconds)		dh	B
Set a timeout for cache entries
<AuthnProviderAlias `baseProvider Alias`> ... </AuthnProviderAlias>		s	B
Enclose a group of directives that represent an extension of a base authentication provider and referenced by the specified alias
AuthnzFcgiCheckAuthnProvider provider-name\|`None` option ...		d	E
Enables a FastCGI application to handle the check_authn authentication hook.
AuthnzFcgiDefineProvider type provider-name backend-address		s	E
Defines a FastCGI application as a provider for authentication and/or authorization
AuthType None\|Basic\|Digest\|Form		dh	B
Type of user authentication
AuthUserFile `file-path`		dh	B
Sets the name of a text file containing the list of users and passwords for authentication
AuthzDBDLoginToReferer On\|Off	Off	d	E
Determines whether to redirect the Client to the Referring page on successful login or logout if a `Referer` request header is present
AuthzDBDQuery `query`		d	E
Specify the SQL Query for the required operation
AuthzDBDRedirectQuery `query`		d	E
Specify a query to look up a login page for the user
AuthzDBMType default\|SDBM\|GDBM\|NDBM\|DB	default	dh	E
Sets the type of database file that is used to store list of user groups
<AuthzProviderAlias `baseProvider Alias Require-Parameters`> ... </AuthzProviderAlias>		s	B
Enclose a group of directives that represent an extension of a base authorization provider and referenced by the specified alias
AuthzSendForbiddenOnFailure On\|Off	Off	dh	B
Send '403 FORBIDDEN' instead of '401 UNAUTHORIZED' if authentication succeeds but authorization fails
BalancerGrowth `#`	5	sv	E
Number of additional Balancers that can be added Post-configuration
BalancerInherit On\|Off	On	sv	E
Inherit ProxyPassed Balancers/Workers from the main server
BalancerMember [`balancerurl`] `url` [`key=value [key=value ...]]`		d	E
Add a member to a load balancing group
BalancerPersist On\|Off	Off	sv	E
Attempt to persist changes made by the Balancer Manager across restarts.
BrotliAlterETag AddSuffix\|NoChange\|Remove	AddSuffix	sv	E
How the outgoing ETag header should be modified during compression
BrotliCompressionMaxInputBlock `value`		sv	E
Maximum input block size
BrotliCompressionQuality `value`	5	sv	E
Compression quality
BrotliCompressionWindow `value`	18	sv	E
Brotli sliding compression window size
BrotliFilterNote [`type`] `notename`		sv	E
Places the compression ratio in a note for logging
BrowserMatch regex [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables conditional on HTTP User-Agent
BrowserMatchNoCase regex [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables conditional on User-Agent without respect to case
BufferedLogs On\|Off	Off	s	B
Buffer log entries in memory before writing to disk
BufferSize integer	131072	svdh	E
Maximum size in bytes to buffer by the buffer filter
CacheDefaultExpire `seconds`	3600 (one hour)	svdh	E
The default duration to cache a document when no expiry date is specified.
CacheDetailHeader `on\|off`	off	svdh	E
Add an X-Cache-Detail header to the response.
CacheDirLength `length`	2	sv	E
The number of characters in subdirectory names
CacheDirLevels `levels`	2	sv	E
The number of levels of subdirectories in the cache.
CacheDisable `url-string` \| `on`		svdh	E
Disable caching of specified URLs
CacheEnable `cache_type` [`url-string`]		svd	E
Enable caching of specified URLs using a specified storage manager
CacheFile `file-path` [`file-path`] ...		s	X
Cache a list of file handles at startup time
CacheHeader `on\|off`	off	svdh	E
Add an X-Cache header to the response.
CacheIgnoreCacheControl On\|Off	Off	sv	E
Ignore request to not serve cached content to client
CacheIgnoreHeaders `header-string` [`header-string`] ...	None	sv	E
Do not store the given HTTP header(s) in the cache.
CacheIgnoreNoLastMod On\|Off	Off	svdh	E
Ignore the fact that a response has no Last Modified header.
CacheIgnoreQueryString On\|Off	Off	sv	E
Ignore query string when caching
CacheIgnoreURLSessionIdentifiers `identifier` [`identifier`] ...	None	sv	E
Ignore defined session identifiers encoded in the URL when caching
CacheKeyBaseURL `URL`	http://example.com	sv	E
Override the base URL of reverse proxied cache keys.
CacheLastModifiedFactor `float`	0.1	svdh	E
The factor used to compute an expiry date based on the LastModified date.
CacheLock `on\|off`	off	sv	E
Enable the thundering herd lock.
CacheLockMaxAge `integer`	5	sv	E
Set the maximum possible age of a cache lock.
CacheLockPath `directory`	/tmp/mod_cache-lock +	sv	E
Set the lock path directory.
CacheMaxExpire `seconds`	86400 (one day)	svdh	E
The maximum time in seconds to cache a document
CacheMaxFileSize `bytes`	1000000	svdh	E
The maximum size (in bytes) of a document to be placed in the cache
CacheMinExpire `seconds`	0	svdh	E
The minimum time in seconds to cache a document
CacheMinFileSize `bytes`	1	svdh	E
The minimum size (in bytes) of a document to be placed in the cache
CacheNegotiatedDocs On\|Off	Off	sv	B
Allows content-negotiated documents to be cached by proxy servers
CacheQuickHandler `on\|off`	on	sv	E
Run the cache from the quick handler.
CacheReadSize `bytes`	0	svdh	E
The minimum size (in bytes) of the document to read and be cached before sending the data downstream
CacheReadTime `milliseconds`	0	svdh	E
The minimum time (in milliseconds) that should elapse while reading before data is sent downstream
CacheRoot `directory`		sv	E
The directory root under which cache files are stored
CacheSocache `type[:args]`		sv	E
The shared object cache implementation to use
CacheSocacheMaxSize `bytes`	102400	svdh	E
The maximum size (in bytes) of an entry to be placed in the cache
CacheSocacheMaxTime `seconds`	86400	svdh	E
The maximum time (in seconds) for a document to be placed in the cache
CacheSocacheMinTime `seconds`	600	svdh	E
The minimum time (in seconds) for a document to be placed in the cache
CacheSocacheReadSize `bytes`	0	svdh	E
The minimum size (in bytes) of the document to read and be cached before sending the data downstream
CacheSocacheReadTime `milliseconds`	0	svdh	E
The minimum time (in milliseconds) that should elapse while reading before data is sent downstream
CacheStaleOnError `on\|off`	on	svdh	E
Serve stale content in place of 5xx responses.
CacheStoreExpired On\|Off	Off	svdh	E
Attempt to cache responses that the server reports as expired
CacheStoreNoStore On\|Off	Off	svdh	E
Attempt to cache requests or responses that have been marked as no-store.
CacheStorePrivate On\|Off	Off	svdh	E
Attempt to cache responses that the server has marked as private
CGIDScriptTimeout `time`[s\|ms]		svdh	B
The length of time to wait for more output from the CGI program
CGIMapExtension `cgi-path` `.extension`		dh	C
Technique for locating the interpreter for CGI scripts
CGIPassAuth On\|Off	Off	dh	C
Enables passing HTTP authorization headers to scripts as CGI variables
CGIVar `variable` `rule`		dh	C
Controls how some CGI variables are set
CharsetDefault `charset`		svdh	E
Charset to translate into
CharsetOptions `option` [`option`] ...	ImplicitAdd	svdh	E
Configures charset translation behavior
CharsetSourceEnc `charset`		svdh	E
Source charset of files
CheckCaseOnly on\|off	Off	svdh	E
Limits the action of the speling module to case corrections
CheckSpelling on\|off	Off	svdh	E
Enables the spelling module
ChrootDir `/path/to/directory`		s	B
Directory for apache to run chroot(8) after startup.
ContentDigest On\|Off	Off	svdh	C
Enables the generation of `Content-MD5` HTTP Response headers
CookieDomain domain		svdh	E
The domain to which the tracking cookie applies
CookieExpires expiry-period		svdh	E
Expiry time for the tracking cookie
CookieName token	Apache	svdh	E
Name of the tracking cookie
CookieStyle Netscape\|Cookie\|Cookie2\|RFC2109\|RFC2965	Netscape	svdh	E
Format of the cookie header field
CookieTracking on\|off	off	svdh	E
Enables tracking cookie
CoreDumpDirectory `directory`		s	M
Directory where Apache HTTP Server attempts to switch before dumping core
CustomLog `file`\|`pipe` `format`\|`nickname` [env=[!]`environment-variable`\| expr=`expression`]		sv	B
Sets filename and format of log file
Dav On\|Off\|`provider-name`	Off	d	E
Enable WebDAV HTTP methods
DavDepthInfinity on\|off	off	svd	E
Allow PROPFIND, Depth: Infinity requests
DavGenericLockDB `file-path`		svd	E
Location of the DAV lock database
DavLockDB `file-path`		sv	E
Location of the DAV lock database
DavMinTimeout `seconds`	0	svd	E
Minimum amount of time the server holds a lock on a DAV resource
DBDExptime `time-in-seconds`	300	sv	E
Keepalive time for idle connections
DBDInitSQL `"SQL statement"`		sv	E
Execute an SQL statement after connecting to a database
DBDKeep `number`	2	sv	E
Maximum sustained number of connections
DBDMax `number`	10	sv	E
Maximum number of connections
DBDMin `number`	1	sv	E
Minimum number of connections
DBDParams `param1`=`value1`[,`param2`=`value2`]		sv	E
Parameters for database connection
DBDPersist On\|Off		sv	E
Whether to use persistent connections
DBDPrepareSQL `"SQL statement"` `label`		sv	E
Define an SQL prepared statement
DBDriver `name`		sv	E
Specify an SQL driver
DefaultIcon `url-path`		svdh	B
Icon to display for files when no specific icon is configured
DefaultLanguage `language-tag`		svdh	B
Defines a default language-tag to be sent in the Content-Language header field for all resources in the current context that have not been assigned a language-tag by some other means.
DefaultRuntimeDir `directory-path`	DEFAULT_REL_RUNTIME +	s	C
Base directory for the server run-time files
DefaultType `media-type\|none`	none	svdh	C
This directive has no effect other than to emit warnings if the value is not `none`. In prior versions, DefaultType would specify a default media type to assign to response content for which no other media type configuration could be found.
Define `parameter-name` [`parameter-value`]		svd	C
Define a variable
DeflateBufferSize `value`	8096	sv	E
Fragment size to be compressed at one time by zlib
DeflateCompressionLevel `value`		sv	E
How much compression do we apply to the output
DeflateFilterNote [`type`] `notename`		sv	E
Places the compression ratio in a note for logging
DeflateInflateLimitRequestBody`value`		svdh	E
Maximum size of inflated request bodies
DeflateInflateRatioBurst `value`		svdh	E
Maximum number of times the inflation ratio for request bodies can be crossed
DeflateInflateRatioLimit `value`		svdh	E
Maximum inflation ratio for request bodies
DeflateMemLevel `value`	9	sv	E
How much memory should be used by zlib for compression
DeflateWindowSize `value`	15	sv	E
Zlib compression window size
Deny from all\|`host`\|env=[!]`env-variable` [`host`\|env=[!]`env-variable`] ...		dh	E
Controls which hosts are denied access to the server
<Directory `directory-path`> ... </Directory>		sv	C
Enclose a group of directives that apply only to the named file-system directory, sub-directories, and their contents.
DirectoryCheckHandler On\|Off	Off	svdh	B
Toggle how this module responds when another handler is configured
DirectoryIndex disabled \| `local-url` [`local-url`] ...	index.html	svdh	B
List of resources to look for when the client requests a directory
DirectoryIndexRedirect on \| off \| permanent \| temp \| seeother \| `3xx-code`	off	svdh	B
Configures an external redirect for directory indexes.
<DirectoryMatch `regex`> ... </DirectoryMatch>		sv	C
Enclose directives that apply to the contents of file-system directories matching a regular expression.
DirectorySlash On\|Off	On	svdh	B
Toggle trailing slash redirects on or off
DocumentRoot `directory-path`	"/usr/local/apache/ +	sv	C
Directory that forms the main document tree visible from the web
DTracePrivileges On\|Off	Off	s	X
Determines whether the privileges required by dtrace are enabled.
DumpIOInput On\|Off	Off	s	E
Dump all input data to the error log
DumpIOOutput On\|Off	Off	s	E
Dump all output data to the error log
<Else> ... </Else>		svdh	C
Contains directives that apply only if the condition of a previous `<If>` or `<ElseIf>` section is not satisfied by a request at runtime
<ElseIf `expression`> ... </ElseIf>		svdh	C
Contains directives that apply only if a condition is satisfied by a request at runtime while the condition of a previous `<If>` or `<ElseIf>` section is not satisfied
EnableExceptionHook On\|Off	Off	s	M
Enables a hook that runs exception handlers after a crash
EnableMMAP On\|Off	On	svdh	C
Use memory-mapping to read files during delivery
EnableSendfile On\|Off	Off	svdh	C
Use the kernel sendfile support to deliver files to the client
Error `message`		svdh	C
Abort configuration parsing with a custom error message
ErrorDocument `error-code` `document`		svdh	C
What the server will return to the client in case of an error
ErrorLog `file-path`\|syslog[:[`facility`][:`tag`]]	logs/error_log (Uni +	sv	C
Location where the server will log errors
ErrorLogFormat [connection\|request] `format`		sv	C
Format specification for error log entries
Example		svdh	X
Demonstration directive to illustrate the Apache module API
ExpiresActive On\|Off	Off	svdh	E
Enables generation of `Expires` headers
ExpiresByType `MIME-type` `<code>seconds`		svdh	E
Value of the `Expires` header configured by MIME type
ExpiresDefault `<code>seconds`		svdh	E
Default algorithm for calculating expiration time
ExtendedStatus On\|Off	Off[*]	s	C
Keep track of extended status information for each request
ExtFilterDefine `filtername` `parameters`		s	E
Define an external filter
ExtFilterOptions `option` [`option`] ...	NoLogStderr	d	E
Configure `mod_ext_filter` options
FallbackResource disabled \| `local-url`		svdh	B
Define a default URL for requests that don't map to a file
FileETag `component` ...	MTime Size	svdh	C
File attributes used to create the ETag HTTP response header for static files
<Files `filename`> ... </Files>		svdh	C
Contains directives that apply to matched filenames
<FilesMatch `regex`> ... </FilesMatch>		svdh	C
Contains directives that apply to regular-expression matched filenames
FilterChain [+=-@!]`filter-name` `...`		svdh	B
Configure the filter chain
FilterDeclare `filter-name` `[type]`		svdh	B
Declare a smart filter
FilterProtocol `filter-name` [`provider-name`] `proto-flags`		svdh	B
Deal with correct HTTP protocol handling
FilterProvider `filter-name` `provider-name` `expression`		svdh	B
Register a content filter
FilterTrace `filter-name` `level`		svd	B
Get debug/diagnostic information from `mod_filter`
ForceLanguagePriority None\|Prefer\|Fallback [Prefer\|Fallback]	Prefer	svdh	B
Action to take if a single acceptable document is not found
ForceType `media-type`\|None		dh	C
Forces all matching files to be served with the specified media type in the HTTP Content-Type header field
ForensicLog `filename`\|`pipe`		sv	E
Sets filename of the forensic log
GlobalLog`file`\|`pipe` `format`\|`nickname` [env=[!]`environment-variable`\| expr=`expression`]		s	B
Sets filename and format of log file
GprofDir `/tmp/gprof/`\|`/tmp/gprof/`%		sv	C
Directory to write gmon.out profiling data to.
GracefulShutdownTimeout `seconds`	0	s	M
Specify a timeout after which a gracefully shutdown server will exit.
Group `unix-group`	#-1	s	B
Group under which the server will answer requests
H2CopyFiles on\|off	off	svdh	E
Determine file handling in responses
H2Direct on\|off	on for h2c, off for +	sv	E
H2 Direct Protocol Switch
H2EarlyHints on\|off	off	sv	E
Determine sending of 103 status codes
H2MaxSessionStreams n	100	sv	E
Maximum number of active streams per HTTP/2 session.
H2MaxWorkerIdleSeconds n	600	s	E
Maximum number of seconds h2 workers remain idle until shut down.
H2MaxWorkers n		s	E
Maximum number of worker threads to use per child process.
H2MinWorkers n		s	E
Minimal number of worker threads to use per child process.
H2ModernTLSOnly on\|off	on	sv	E
Require HTTP/2 connections to be "modern TLS" only
H2Push on\|off	on	sv	E
H2 Server Push Switch
H2PushDiarySize n	256	sv	E
H2 Server Push Diary Size
H2PushPriority mime-type [after\|before\|interleaved] [weight]	* After 16	sv	E
H2 Server Push Priority
H2PushResource [add] path [critical]		svdh	E
Declares resources for early pushing to the client
H2SerializeHeaders on\|off	off	sv	E
Serialize Request/Response Processing Switch
H2StreamMaxMemSize bytes	65536	sv	E
Maximum amount of output data buffered per stream.
H2TLSCoolDownSecs seconds	1	sv	E
-
H2TLSWarmUpSize amount	1048576	sv	E
-
H2Upgrade on\|off	on for h2c, off for +	sv	E
H2 Upgrade Protocol Switch
H2WindowSize bytes	65535	sv	E
Size of Stream Window for upstream data.
Header [`condition`] add\|append\|echo\|edit\|edit*\|merge\|set\|setifempty\|unset\|note `header` [[expr=]`value` [`replacement`] [early\|env=[!]`varname`\|expr=`expression`]]		svdh	E
Configure HTTP response headers
HeaderName `filename`		svdh	B
Name of the file that will be inserted at the top of the index listing
HeartbeatAddress `addr:port`		s	X
Multicast address for heartbeat packets
HeartbeatListen`addr:port`		s	X
multicast address to listen for incoming heartbeat requests
HeartbeatMaxServers `number-of-servers`	10	s	X
Specifies the maximum number of servers that will be sending heartbeat requests to this server
HeartbeatStorage `file-path`	logs/hb.dat	s	X
Path to store heartbeat data
HeartbeatStorage `file-path`	logs/hb.dat	s	X
Path to read heartbeat data
HostnameLookups On\|Off\|Double	Off	svd	C
Enables DNS lookups on client IP addresses
HttpProtocolOptions [Strict\|Unsafe] [RegisteredMethods\|LenientMethods] [Allow0.9\|Require1.0]	Strict LenientMetho +	sv	C
Modify restrictions on HTTP Request Messages
IdentityCheck On\|Off	Off	svd	E
Enables logging of the RFC 1413 identity of the remote user
IdentityCheckTimeout `seconds`	30	svd	E
Determines the timeout duration for ident requests
<If `expression`> ... </If>		svdh	C
Contains directives that apply only if a condition is satisfied by a request at runtime
<IfDefine [!]`parameter-name`> ... </IfDefine>		svdh	C
Encloses directives that will be processed only if a test is true at startup
<IfModule [!]`module-file`\|`module-identifier`> ... </IfModule>		svdh	C
Encloses directives that are processed conditional on the presence or absence of a specific module
<IfVersion [[!]`operator`] `version`> ... </IfVersion>		svdh	E
contains version dependent configuration
ImapBase map\|referer\|`URL`	http://servername/	svdh	B
Default `base` for imagemap files
ImapDefault error\|nocontent\|map\|referer\|`URL`	nocontent	svdh	B
Default action when an imagemap is called with coordinates that are not explicitly mapped
ImapMenu none\|formatted\|semiformatted\|unformatted	formatted	svdh	B
Action if no coordinates are given when calling an imagemap
Include `file-path`\|`directory-path`\|`wildcard`		svd	C
Includes other configuration files from within the server configuration files
IncludeOptional `file-path`\|`directory-path`\|`wildcard`		svd	C
Includes other configuration files from within the server configuration files
IndexHeadInsert `"markup ..."`		svdh	B
Inserts text in the HEAD section of an index page.
IndexIgnore `file` [`file`] ...	"."	svdh	B
Adds to the list of files to hide when listing a directory
IndexIgnoreReset ON\|OFF		svdh	B
Empties the list of files to hide when listing a directory
IndexOptions [+\|-]`option` [[+\|-]`option`] ...		svdh	B
Various configuration settings for directory indexing
IndexOrderDefault Ascending\|Descending Name\|Date\|Size\|Description	Ascending Name	svdh	B
Sets the default ordering of the directory index
IndexStyleSheet `url-path`		svdh	B
Adds a CSS stylesheet to the directory index
InputSed `sed-command`		dh	X
Sed command to filter request data (typically `POST` data)
ISAPIAppendLogToErrors on\|off	off	svdh	B
Record `HSE_APPEND_LOG_PARAMETER` requests from ISAPI extensions to the error log
ISAPIAppendLogToQuery on\|off	on	svdh	B
Record `HSE_APPEND_LOG_PARAMETER` requests from ISAPI extensions to the query field
ISAPICacheFile `file-path` [`file-path`] ...		sv	B
ISAPI .dll files to be loaded at startup
ISAPIFakeAsync on\|off	off	svdh	B
Fake asynchronous support for ISAPI callbacks
ISAPILogNotSupported on\|off	off	svdh	B
Log unsupported feature requests from ISAPI extensions
ISAPIReadAheadBuffer `size`	49152	svdh	B
Size of the Read Ahead Buffer sent to ISAPI extensions
KeepAlive On\|Off	On	sv	C
Enables HTTP persistent connections
KeepAliveTimeout `num`[ms]	5	sv	C
Amount of time the server will wait for subsequent requests on a persistent connection
KeptBodySize `maximum size in bytes`	0	d	B
Keep the request body instead of discarding it up to the specified maximum size, for potential use by filters such as mod_include.
LanguagePriority `MIME-lang` [`MIME-lang`] ...		svdh	B
The precedence of language variants for cases where the client does not express a preference
LDAPCacheEntries `number`	1024	s	E
Maximum number of entries in the primary LDAP cache
LDAPCacheTTL `seconds`	600	s	E
Time that cached items remain valid
LDAPConnectionPoolTTL `n`	-1	sv	E
Discard backend connections that have been sitting in the connection pool too long
LDAPConnectionTimeout `seconds`		s	E
Specifies the socket connection timeout in seconds
LDAPLibraryDebug `7`		s	E
Enable debugging in the LDAP SDK
LDAPOpCacheEntries `number`	1024	s	E
Number of entries used to cache LDAP compare operations
LDAPOpCacheTTL `seconds`	600	s	E
Time that entries in the operation cache remain valid
LDAPReferralHopLimit `number`		dh	E
The maximum number of referral hops to chase before terminating an LDAP query.
LDAPReferrals `On\|Off\|default`	On	dh	E
Enable referral chasing during queries to the LDAP server.
LDAPRetries `number-of-retries`	3	s	E
Configures the number of LDAP server retries.
LDAPRetryDelay `seconds`	0	s	E
Configures the delay between LDAP server retries.
LDAPSharedCacheFile `directory-path/filename`		s	E
Sets the shared memory cache file
LDAPSharedCacheSize `bytes`	500000	s	E
Size in bytes of the shared-memory cache
LDAPTimeout `seconds`	60	s	E
Specifies the timeout for LDAP search and bind operations, in seconds
LDAPTrustedClientCert `type` `directory-path/filename/nickname` `[password]`		dh	E
Sets the file containing or nickname referring to a per connection client certificate. Not all LDAP toolkits support per connection client certificates.
LDAPTrustedGlobalCert `type` `directory-path/filename` `[password]`		s	E
Sets the file or database containing global trusted Certificate Authority or global client certificates
LDAPTrustedMode `type`		sv	E
Specifies the SSL/TLS mode to be used when connecting to an LDAP server.
LDAPVerifyServerCert `On\|Off`	On	s	E
Force server certificate verification
<Limit `method` [`method`] ... > ... </Limit>		dh	C
Restrict enclosed access controls to only certain HTTP methods
<LimitExcept `method` [`method`] ... > ... </LimitExcept>		dh	C
Restrict access controls to all HTTP methods except the named ones
LimitInternalRecursion `number` [`number`]	10	sv	C
Determine maximum number of internal redirects and nested subrequests
LimitRequestBody `bytes`	0	svdh	C
Restricts the total size of the HTTP request body sent from the client
LimitRequestFields `number`	100	sv	C
Limits the number of HTTP request header fields that will be accepted from the client
LimitRequestFieldSize `bytes`	8190	sv	C
Limits the size of the HTTP request header allowed from the client
LimitRequestLine `bytes`	8190	sv	C
Limit the size of the HTTP request line that will be accepted from the client
LimitXMLRequestBody `bytes`	1000000	svdh	C
Limits the size of an XML-based request body
Listen [`IP-address`:]`portnumber` [`protocol`]		s	M
IP addresses and ports that the server listens to
ListenBacklog `backlog`		s	M
Maximum length of the queue of pending connections
ListenCoresBucketsRatio `ratio`	0 (disabled)	s	M
Ratio between the number of CPU cores (online) and the number of listeners' buckets
LoadFile filename [filename] ...		sv	E
Link in the named object file or library
LoadModule module filename		sv	E
Links in the object file or library, and adds to the list of active modules
<Location `URL-path`\|`URL`> ... </Location>		sv	C
Applies the enclosed directives only to matching URLs
<LocationMatch `regex`> ... </LocationMatch>		sv	C
Applies the enclosed directives only to regular-expression matching URLs
LogFormat `format`\|`nickname` [`nickname`]	"%h %l %u %t \"%r\" +	sv	B
Describes a format for use in a log file
LogIOTrackTTFB ON\|OFF	OFF	svdh	E
Enable tracking of time to first byte (TTFB)
LogLevel [`module`:]`level` [`module`:`level`] ...	warn	svd	C
Controls the verbosity of the ErrorLog
LogMessage `message` [hook=`hook`] [expr=`expression`]		d	X
Log user-defined message to error log
LuaAuthzProvider provider_name /path/to/lua/script.lua function_name		s	X
Plug an authorization provider function into `mod_authz_core`
LuaCodeCache stat\|forever\|never	stat	svdh	X
Configure the compiled code cache.
LuaHookAccessChecker /path/to/lua/script.lua hook_function_name [early\|late]		svdh	X
Provide a hook for the access_checker phase of request processing
LuaHookAuthChecker /path/to/lua/script.lua hook_function_name [early\|late]		svdh	X
Provide a hook for the auth_checker phase of request processing
LuaHookCheckUserID /path/to/lua/script.lua hook_function_name [early\|late]		svdh	X
Provide a hook for the check_user_id phase of request processing
LuaHookFixups /path/to/lua/script.lua hook_function_name		svdh	X
Provide a hook for the fixups phase of a request processing
LuaHookInsertFilter /path/to/lua/script.lua hook_function_name		svdh	X
Provide a hook for the insert_filter phase of request processing
LuaHookLog /path/to/lua/script.lua log_function_name		svdh	X
Provide a hook for the access log phase of a request processing
LuaHookMapToStorage /path/to/lua/script.lua hook_function_name		svdh	X
Provide a hook for the map_to_storage phase of request processing
LuaHookTranslateName /path/to/lua/script.lua hook_function_name [early\|late]		sv	X
Provide a hook for the translate name phase of request processing
LuaHookTypeChecker /path/to/lua/script.lua hook_function_name		svdh	X
Provide a hook for the type_checker phase of request processing
LuaInherit none\|parent-first\|parent-last	parent-first	svdh	X
Controls how parent configuration sections are merged into children
LuaInputFilter filter_name /path/to/lua/script.lua function_name		s	X
Provide a Lua function for content input filtering
LuaMapHandler uri-pattern /path/to/lua/script.lua [function-name]		svdh	X
Map a path to a lua handler
LuaOutputFilter filter_name /path/to/lua/script.lua function_name		s	X
Provide a Lua function for content output filtering
LuaPackageCPath /path/to/include/?.soa		svdh	X
Add a directory to lua's package.cpath
LuaPackagePath /path/to/include/?.lua		svdh	X
Add a directory to lua's package.path
LuaQuickHandler /path/to/script.lua hook_function_name		sv	X
Provide a hook for the quick handler of request processing
LuaRoot /path/to/a/directory		svdh	X
Specify the base path for resolving relative paths for mod_lua directives
LuaScope once\|request\|conn\|thread\|server [min] [max]	once	svdh	X
One of once, request, conn, thread -- default is once
<Macro `name` [`par1` .. `parN`]> ... </Macro>		svd	B
Define a configuration file macro
MaxConnectionsPerChild `number`	0	s	M
Limit on the number of connections that an individual child server will handle during its life
MaxKeepAliveRequests `number`	100	sv	C
Number of requests allowed on a persistent connection
MaxMemFree `KBytes`	2048	s	M
Maximum amount of memory that the main allocator is allowed to hold without calling `free()`
MaxRangeOverlaps default \| unlimited \| none \| `number-of-ranges`	20	svd	C
Number of overlapping ranges (eg: `100-200,150-300`) allowed before returning the complete resource
MaxRangeReversals default \| unlimited \| none \| `number-of-ranges`	20	svd	C
Number of range reversals (eg: `100-200,50-70`) allowed before returning the complete resource
MaxRanges default \| unlimited \| none \| `number-of-ranges`	200	svd	C
Number of ranges allowed before returning the complete resource
MaxRequestWorkers `number`		s	M
Maximum number of connections that will be processed simultaneously
MaxSpareServers `number`	10	s	M
Maximum number of idle child server processes
MaxSpareThreads `number`		s	M
Maximum number of idle threads
MaxThreads `number`	2048	s	M
Set the maximum number of worker threads
MDBaseServer on\|off	off	s	E
Control if base server may be managed or only virtual hosts.
MDCAChallenges name [ name ... ]	tls-sni-01 http-01	s	E
Type of ACME challenge used to prove domain ownership.
MDCertificateAgreement url-of-terms-of-service		s	E
The URL of the Terms-of-Service document, that the CA server requires you to accept.
MDCertificateAuthority url	https://acme-v01.ap +	s	E
The URL of the ACME Certificate Authority service.
MDCertificateProtocol protocol	ACME	s	E
The protocol to use with the Certificate Authority.
MDDriveMode always\|auto\|manual	auto	s	E
Control when it is allowed to obtain/renew certificates.
MDHttpProxy url		s	E
Define a proxy for outgoing connections.
MDMember hostname		s	E
Additional hostname for the managed domain.
MDMembers auto\|manual	auto	s	E
Control if the alias domain names are automatically added.
MDMustStaple on\|off	off	s	E
Control if new certificates carry the OCSP Must Staple flag.
MDNotifyCmd path		s	E
Run a program when Managed Domain are ready.
MDomain `dns-name` [ `other-dns-name`... ] [auto\|manual]		s	E
Define list of domain names that belong to one group.
<MDomainSet `dns-name` [ `other-dns-name`... ]>...</MDomainSet>		s	E
Container for directives applied to the same managed domains.
MDPortMap map1 [ map2 ]	80:80 443:443	s	E
Map external to internal ports for domain ownership verification.
MDPrivateKeys type [ params... ]	RSA 2048	s	E
Set type and size of the private keys generated.
MDRenewWindow duration	33%	s	E
Control when a certificate will be renewed.
MDRequireHttps off\|temporary\|permanent	off	s	E
Redirects http: traffic to https: for Managed Domains.
MDStoreDir path	md	s	E
Path on the local file system to store the Managed Domains data.
MemcacheConnTTL num[units]	15s	sv	E
Keepalive time for idle connections
MergeTrailers [on\|off]	off	sv	C
Determines whether trailers are merged into headers
MetaDir `directory`	.web	svdh	E
Name of the directory to find CERN-style meta information files
MetaFiles on\|off	off	svdh	E
Activates CERN meta-file processing
MetaSuffix `suffix`	.meta	svdh	E
File name suffix for the file containing CERN-style meta information
MimeMagicFile `file-path`		sv	E
Enable MIME-type determination based on file contents using the specified magic file
MinSpareServers `number`	5	s	M
Minimum number of idle child server processes
MinSpareThreads `number`		s	M
Minimum number of idle threads available to handle request spikes
MMapFile `file-path` [`file-path`] ...		s	X
Map a list of files into memory at startup time
ModemStandard V.21\|V.26bis\|V.32\|V.34\|V.92		d	X
Modem standard to simulate
ModMimeUsePathInfo On\|Off	Off	d	B
Tells `mod_mime` to treat `path_info` components as part of the filename
MultiviewsMatch Any\|NegotiatedOnly\|Filters\|Handlers [Handlers\|Filters]	NegotiatedOnly	svdh	B
The types of files that will be included when searching for a matching file with MultiViews
Mutex `mechanism` [default\|`mutex-name`] ... [OmitPID]	default	s	C
Configures mutex mechanism and lock file directory for all or specified mutexes
NameVirtualHost `addr`[:`port`]		s	C
DEPRECATED: Designates an IP address for name-virtual hosting
NoProxy `host` [`host`] ...		sv	E
Hosts, domains, or networks that will be connected to directly
NWSSLTrustedCerts `filename` [`filename`] ...		s	B
List of additional client certificates
NWSSLUpgradeable [`IP-address`:]`portnumber`		s	B
Allows a connection to be upgraded to an SSL connection upon request
Options [+\|-]`option` [[+\|-]`option`] ...	FollowSymlinks	svdh	C
Configures what features are available in a particular directory
Order `ordering`	Deny,Allow	dh	E
Controls the default access state and the order in which `Allow` and `Deny` are evaluated.
OutputSed `sed-command`		dh	X
Sed command for filtering response content
PassEnv `env-variable` [`env-variable`] ...		svdh	B
Passes environment variables from the shell
PidFile `filename`	logs/httpd.pid	s	M
File where the server records the process ID of the daemon
PrivilegesMode FAST\|SECURE\|SELECTIVE	FAST	svd	X
Trade off processing speed and efficiency vs security against malicious privileges-aware code.
Protocol `protocol`		sv	C
Protocol for a listening socket
ProtocolEcho On\|Off	Off	sv	X
Turn the echo server on or off
Protocols `protocol` ...	http/1.1	sv	C
Protocols available for a server/virtual host
ProtocolsHonorOrder On\|Off	On	sv	C
Determines if order of Protocols determines precedence during negotiation
<Proxy `wildcard-url`> ...</Proxy>		sv	E
Container for directives applied to proxied resources
ProxyAddHeaders Off\|On	On	svd	E
Add proxy information in X-Forwarded-* headers
ProxyBadHeader IsError\|Ignore\|StartBody	IsError	sv	E
Determines how to handle bad header lines in a response
ProxyBlock *\|`word`\|`host`\|`domain` [`word`\|`host`\|`domain`] ...		sv	E
Words, hosts, or domains that are banned from being proxied
ProxyDomain `Domain`		sv	E
Default domain name for proxied requests
ProxyErrorOverride On\|Off	Off	svd	E
Override error pages for proxied content
ProxyExpressDBMFile <pathname>		sv	E
Pathname to DBM file.
ProxyExpressDBMFile <type>		sv	E
DBM type of file.
ProxyExpressEnable [on\|off]		sv	E
Enable the module functionality.
ProxyFCGIBackendType FPM\|GENERIC	FPM	svdh	E
Specify the type of backend FastCGI application
ProxyFCGISetEnvIf `conditional-expression` [!]`environment-variable-name` [`value-expression`]		svdh	E
Allow variables sent to FastCGI servers to be fixed up
ProxyFtpDirCharset `character set`	ISO-8859-1	svd	E
Define the character set for proxied FTP listings
ProxyFtpEscapeWildcards [on\|off]		svd	E
Whether wildcards in requested filenames are escaped when sent to the FTP server
ProxyFtpListOnWildcard [on\|off]		svd	E
Whether wildcards in requested filenames trigger a file listing
ProxyHCExpr name {ap_expr expression}		sv	E
Creates a named condition expression to use to determine health of the backend based on its response.
ProxyHCTemplate name parameter=setting <...>		sv	E
Creates a named template for setting various health check parameters
ProxyHCTPsize <size>		s	E
Sets the total server-wide size of the threadpool used for the health check workers.
ProxyHTMLBufSize `bytes`		svd	B
Sets the buffer size increment for buffering inline scripts and stylesheets.
ProxyHTMLCharsetOut `Charset \| *`		svd	B
Specify a charset for mod_proxy_html output.
ProxyHTMLDocType HTML\|XHTML [Legacy] OR ProxyHTMLDocType `fpi` [SGML\|XML]		svd	B
Sets an HTML or XHTML document type declaration.
ProxyHTMLEnable On\|Off	Off	svd	B
Turns the proxy_html filter on or off.
ProxyHTMLEvents `attribute [attribute ...]`		svd	B
Specify attributes to treat as scripting events.
ProxyHTMLExtended On\|Off	Off	svd	B
Determines whether to fix links in inline scripts, stylesheets, and scripting events.
ProxyHTMLFixups [lowercase] [dospath] [reset]		svd	B
Fixes for simple HTML errors.
ProxyHTMLInterp On\|Off	Off	svd	B
Enables per-request interpolation of `ProxyHTMLURLMap` rules.
ProxyHTMLLinks `element attribute [attribute2 ...]`		svd	B
Specify HTML elements that have URL attributes to be rewritten.
ProxyHTMLMeta On\|Off	Off	svd	B
Turns on or off extra pre-parsing of metadata in HTML `<head>` sections.
ProxyHTMLStripComments On\|Off	Off	svd	B
Determines whether to strip HTML comments.
ProxyHTMLURLMap `from-pattern to-pattern [flags] [cond]`		svd	B
Defines a rule to rewrite HTML links
ProxyIOBufferSize `bytes`	8192	sv	E
Determine size of internal data throughput buffer
<ProxyMatch `regex`> ...</ProxyMatch>		sv	E
Container for directives applied to regular-expression-matched proxied resources
ProxyMaxForwards `number`	-1	sv	E
Maximium number of proxies that a request can be forwarded through
ProxyPass [`path`] !\|`url` [`key=value` `[key=value` ...]] [nocanon] [interpolate] [noquery]		svd	E
Maps remote servers into the local server URL-space
ProxyPassInherit On\|Off	On	sv	E
Inherit ProxyPass directives defined from the main server
ProxyPassInterpolateEnv On\|Off	Off	svd	E
Enable Environment Variable interpolation in Reverse Proxy configurations
ProxyPassMatch [`regex`] !\|`url` [`key=value` `[key=value` ...]]		svd	E
Maps remote servers into the local server URL-space using regular expressions
ProxyPassReverse [`path`] `url` [`interpolate`]		svd	E
Adjusts the URL in HTTP response headers sent from a reverse proxied server
ProxyPassReverseCookieDomain `internal-domain` `public-domain` [`interpolate`]		svd	E
Adjusts the Domain string in Set-Cookie headers from a reverse- proxied server
ProxyPassReverseCookiePath `internal-path` `public-path` [`interpolate`]		svd	E
Adjusts the Path string in Set-Cookie headers from a reverse- proxied server
ProxyPreserveHost On\|Off	Off	svd	E
Use incoming Host HTTP request header for proxy request
ProxyReceiveBufferSize `bytes`	0	sv	E
Network buffer size for proxied HTTP and FTP connections
ProxyRemote `match` `remote-server`		sv	E
Remote proxy used to handle certain requests
ProxyRemoteMatch `regex` `remote-server`		sv	E
Remote proxy used to handle requests matched by regular expressions
ProxyRequests On\|Off	Off	sv	E
Enables forward (standard) proxy requests
ProxySCGIInternalRedirect On\|Off\|`Headername`	On	svd	E
Enable or disable internal redirect responses from the backend
ProxySCGISendfile On\|Off\|`Headername`	Off	svd	E
Enable evaluation of `X-Sendfile` pseudo response header
ProxySet `url` `key=value [key=value ...]`		d	E
Set various Proxy balancer or member parameters
ProxySourceAddress `address`		sv	E
Set local IP address for outgoing proxy connections
ProxyStatus Off\|On\|Full	Off	sv	E
Show Proxy LoadBalancer status in mod_status
ProxyTimeout `seconds`		sv	E
Network timeout for proxied requests
ProxyVia On\|Off\|Full\|Block	Off	sv	E
Information provided in the `Via` HTTP response header for proxied requests
QualifyRedirectURL ON\|OFF	OFF	svd	C
Controls whether the REDIRECT_URL environment variable is fully qualified
ReadmeName `filename`		svdh	B
Name of the file that will be inserted at the end of the index listing
ReceiveBufferSize `bytes`	0	s	M
TCP receive buffer size
Redirect [`status`] [`URL-path`] `URL`		svdh	B
Sends an external redirect asking the client to fetch a different URL
RedirectMatch [`status`] `regex` `URL`		svdh	B
Sends an external redirect based on a regular expression match of the current URL
RedirectPermanent `URL-path` `URL`		svdh	B
Sends an external permanent redirect asking the client to fetch a different URL
RedirectTemp `URL-path` `URL`		svdh	B
Sends an external temporary redirect asking the client to fetch a different URL
ReflectorHeader `inputheader` `[outputheader]`		svdh	B
Reflect an input header to the output headers
RegisterHttpMethod `method` [`method` [...]]		s	C
Register non-standard HTTP methods
RemoteIPHeader `header-field`		sv	B
Declare the header field which should be parsed for useragent IP addresses
RemoteIPInternalProxy `proxy-ip`\|`proxy-ip/subnet`\|`hostname` ...		sv	B
Declare client intranet IP addresses trusted to present the RemoteIPHeader value
RemoteIPInternalProxyList `filename`		sv	B
Declare client intranet IP addresses trusted to present the RemoteIPHeader value
RemoteIPProxiesHeader `HeaderFieldName`		sv	B
Declare the header field which will record all intermediate IP addresses
RemoteIPProxyProtocol On\|Off		sv	B
Enable or disable PROXY protocol handling
RemoteIPProxyProtocolExceptions host\|range [host\|range] [host\|range]		sv	B
Disable processing of PROXY header for certain hosts or networks
RemoteIPTrustedProxy `proxy-ip`\|`proxy-ip/subnet`\|`hostname` ...		sv	B
Declare client intranet IP addresses trusted to present the RemoteIPHeader value
RemoteIPTrustedProxyList `filename`		sv	B
Declare client intranet IP addresses trusted to present the RemoteIPHeader value
RemoveCharset `extension` [`extension`] ...		vdh	B
Removes any character set associations for a set of file extensions
RemoveEncoding `extension` [`extension`] ...		vdh	B
Removes any content encoding associations for a set of file extensions
RemoveHandler `extension` [`extension`] ...		vdh	B
Removes any handler associations for a set of file extensions
RemoveInputFilter `extension` [`extension`] ...		vdh	B
Removes any input filter associations for a set of file extensions
RemoveLanguage `extension` [`extension`] ...		vdh	B
Removes any language associations for a set of file extensions
RemoveOutputFilter `extension` [`extension`] ...		vdh	B
Removes any output filter associations for a set of file extensions
RemoveType `extension` [`extension`] ...		vdh	B
Removes any content type associations for a set of file extensions
RequestHeader add\|append\|edit\|edit*\|merge\|set\|setifempty\|unset `header` [[expr=]`value` [`replacement`] [early\|env=[!]`varname`\|expr=`expression`]]		svdh	E
Configure HTTP request headers
RequestReadTimeout [header=`timeout`[-`maxtimeout`][,MinRate=`rate`] [body=`timeout`[-`maxtimeout`][,MinRate=`rate`]		sv	E
Set timeout values for receiving request headers and body from client.
Require [not] `entity-name` [`entity-name`] ...		dh	B
Tests whether an authenticated user is authorized by an authorization provider.
<RequireAll> ... </RequireAll>		dh	B
Enclose a group of authorization directives of which none must fail and at least one must succeed for the enclosing directive to succeed.
<RequireAny> ... </RequireAny>		dh	B
Enclose a group of authorization directives of which one must succeed for the enclosing directive to succeed.
<RequireNone> ... </RequireNone>		dh	B
Enclose a group of authorization directives of which none must succeed for the enclosing directive to not fail.
RewriteBase URL-path		dh	E
Sets the base URL for per-directory rewrites
RewriteCond TestString CondPattern [flags]		svdh	E
Defines a condition under which rewriting will take place
RewriteEngine on\|off	off	svdh	E
Enables or disables runtime rewriting engine
RewriteMap MapName MapType:MapSource		sv	E
Defines a mapping function for key-lookup
RewriteOptions `Options`		svdh	E
Sets some special options for the rewrite engine
RewriteRule Pattern Substitution [flags]		svdh	E
Defines rules for the rewriting engine
RLimitCPU `seconds`\|max [`seconds`\|max]		svdh	C
Limits the CPU consumption of processes launched by Apache httpd children
RLimitMEM `bytes`\|max [`bytes`\|max]		svdh	C
Limits the memory consumption of processes launched by Apache httpd children
RLimitNPROC `number`\|max [`number`\|max]		svdh	C
Limits the number of processes that can be launched by processes launched by Apache httpd children
Satisfy Any\|All	All	dh	E
Interaction between host-level access control and user authentication
ScoreBoardFile `file-path`	logs/apache_runtime +	s	M
Location of the file used to store coordination data for the child processes
Script `method` `cgi-script`		svd	B
Activates a CGI script for a particular request method.
ScriptAlias [`URL-path`] `file-path`\|`directory-path`		svd	B
Maps a URL to a filesystem location and designates the target as a CGI script
ScriptAliasMatch `regex` `file-path`\|`directory-path`		sv	B
Maps a URL to a filesystem location using a regular expression and designates the target as a CGI script
ScriptInterpreterSource Registry\|Registry-Strict\|Script	Script	svdh	C
Technique for locating the interpreter for CGI scripts
ScriptLog `file-path`		sv	B
Location of the CGI script error logfile
ScriptLogBuffer `bytes`	1024	sv	B
Maximum amount of PUT or POST requests that will be recorded in the scriptlog
ScriptLogLength `bytes`	10385760	sv	B
Size limit of the CGI script logfile
ScriptSock `file-path`	cgisock	s	B
The filename prefix of the socket to use for communication with the cgi daemon
SecureListen [`IP-address`:]`portnumber` `Certificate-Name` [MUTUAL]		s	B
Enables SSL encryption for the specified port
SeeRequestTail On\|Off	Off	s	C
Determine if mod_status displays the first 63 characters of a request or the last 63, assuming the request itself is greater than 63 chars.
SendBufferSize `bytes`	0	s	M
TCP buffer size
ServerAdmin `email-address`\|`URL`		sv	C
Email address that the server includes in error messages sent to the client
ServerAlias `hostname` [`hostname`] ...		v	C
Alternate names for a host used when matching requests to name-virtual hosts
ServerLimit `number`		s	M
Upper limit on configurable number of processes
ServerName [`scheme`://]`domain-name`\|`ip-address`[:`port`]		sv	C
Hostname and port that the server uses to identify itself
ServerPath `URL-path`		v	C
Legacy URL pathname for a name-based virtual host that is accessed by an incompatible browser
ServerRoot `directory-path`	/usr/local/apache	s	C
Base directory for the server installation
ServerSignature On\|Off\|EMail	Off	svdh	C
Configures the footer on server-generated documents
ServerTokens Major\|Minor\|Min[imal]\|Prod[uctOnly]\|OS\|Full	Full	s	C
Configures the `Server` HTTP response header
Session On\|Off	Off	svdh	E
Enables a session for the current directory or location
SessionCookieName `name` `attributes`		svdh	E
Name and attributes for the RFC2109 cookie storing the session
SessionCookieName2 `name` `attributes`		svdh	E
Name and attributes for the RFC2965 cookie storing the session
SessionCookieRemove On\|Off	Off	svdh	E
Control for whether session cookies should be removed from incoming HTTP headers
SessionCryptoCipher `name`		svdh	X
The crypto cipher to be used to encrypt the session
SessionCryptoDriver `name` `[param[=value]]`		s	X
The crypto driver to be used to encrypt the session
SessionCryptoPassphrase `secret` [ `secret` ... ]		svdh	X
The key used to encrypt the session
SessionCryptoPassphraseFile `filename`		svd	X
File containing keys used to encrypt the session
SessionDBDCookieName `name` `attributes`		svdh	E
Name and attributes for the RFC2109 cookie storing the session ID
SessionDBDCookieName2 `name` `attributes`		svdh	E
Name and attributes for the RFC2965 cookie storing the session ID
SessionDBDCookieRemove On\|Off	On	svdh	E
Control for whether session ID cookies should be removed from incoming HTTP headers
SessionDBDDeleteLabel `label`	deletesession	svdh	E
The SQL query to use to remove sessions from the database
SessionDBDInsertLabel `label`	insertsession	svdh	E
The SQL query to use to insert sessions into the database
SessionDBDPerUser On\|Off	Off	svdh	E
Enable a per user session
SessionDBDSelectLabel `label`	selectsession	svdh	E
The SQL query to use to select sessions from the database
SessionDBDUpdateLabel `label`	updatesession	svdh	E
The SQL query to use to update existing sessions in the database
SessionEnv On\|Off	Off	svdh	E
Control whether the contents of the session are written to the `HTTP_SESSION` environment variable
SessionExclude `path`		svdh	E
Define URL prefixes for which a session is ignored
SessionHeader `header`		svdh	E
Import session updates from a given HTTP response header
SessionInclude `path`		svdh	E
Define URL prefixes for which a session is valid
SessionMaxAge `maxage`	0	svdh	E
Define a maximum age in seconds for a session
SetEnv `env-variable` [`value`]		svdh	B
Sets environment variables
SetEnvIf attribute regex [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables based on attributes of the request
SetEnvIfExpr expr [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables based on an ap_expr expression
SetEnvIfNoCase attribute regex [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables based on attributes of the request without respect to case
SetHandler `handler-name`\|none\|`expression`		svdh	C
Forces all matching files to be processed by a handler
SetInputFilter `filter`[;`filter`...]		svdh	C
Sets the filters that will process client requests and POST input
SetOutputFilter `filter`[;`filter`...]		svdh	C
Sets the filters that will process responses from the server
SSIEndTag `tag`	"-->"	sv	B
String that ends an include element
SSIErrorMsg `message`	"[an error occurred +	svdh	B
Error message displayed when there is an SSI error
SSIETag on\|off	off	dh	B
Controls whether ETags are generated by the server.
SSILastModified on\|off	off	dh	B
Controls whether `Last-Modified` headers are generated by the server.
SSILegacyExprParser on\|off	off	dh	B
Enable compatibility mode for conditional expressions.
SSIStartTag `tag`	"<!--#"	sv	B
String that starts an include element
SSITimeFormat `formatstring`	"%A, %d-%b-%Y %H:%M +	svdh	B
Configures the format in which date strings are displayed
SSIUndefinedEcho `string`	"(none)"	svdh	B
String displayed when an unset variable is echoed
SSLCACertificateFile file-path		sv	E
File of concatenated PEM-encoded CA Certificates for Client Auth
SSLCACertificatePath directory-path		sv	E
Directory of PEM-encoded CA Certificates for Client Auth
SSLCADNRequestFile file-path		sv	E
File of concatenated PEM-encoded CA Certificates for defining acceptable CA names
SSLCADNRequestPath directory-path		sv	E
Directory of PEM-encoded CA Certificates for defining acceptable CA names
SSLCARevocationCheck chain\|leaf\|none flags	none	sv	E
Enable CRL-based revocation checking
SSLCARevocationFile file-path		sv	E
File of concatenated PEM-encoded CA CRLs for Client Auth
SSLCARevocationPath directory-path		sv	E
Directory of PEM-encoded CA CRLs for Client Auth
SSLCertificateChainFile file-path		sv	E
File of PEM-encoded Server CA Certificates
SSLCertificateFile file-path		sv	E
Server PEM-encoded X.509 certificate data file
SSLCertificateKeyFile file-path		sv	E
Server PEM-encoded private key file
SSLCipherSuite cipher-spec	DEFAULT (depends on +	svdh	E
Cipher Suite available for negotiation in SSL handshake
SSLCompression on\|off	off	sv	E
Enable compression on the SSL level
SSLCryptoDevice engine	builtin	s	E
Enable use of a cryptographic hardware accelerator
SSLEngine on\|off\|optional	off	sv	E
SSL Engine Operation Switch
SSLFIPS on\|off	off	s	E
SSL FIPS mode Switch
SSLHonorCipherOrder on\|off	off	sv	E
Option to prefer the server's cipher preference order
SSLInsecureRenegotiation on\|off	off	sv	E
Option to enable support for insecure renegotiation
SSLOCSDefaultResponder uri		sv	E
Set the default responder URI for OCSP validation
SSLOCSPEnable on\|off	off	sv	E
Enable OCSP validation of the client certificate chain
SSLOCSPNoverify On/Off	Off	sv	E
skip the OCSP responder certificates verification
SSLOCSPOverrideResponder on\|off	off	sv	E
Force use of the default responder URI for OCSP validation
SSLOCSPProxyURL url		sv	E
Proxy URL to use for OCSP requests
SSLOCSPResponderCertificateFile file		sv	E
Set of trusted PEM encoded OCSP responder certificates
SSLOCSPResponderTimeout seconds	10	sv	E
Timeout for OCSP queries
SSLOCSPResponseMaxAge seconds	-1	sv	E
Maximum allowable age for OCSP responses
SSLOCSPResponseTimeSkew seconds	300	sv	E
Maximum allowable time skew for OCSP response validation
SSLOCSPUseRequestNonce on\|off	on	sv	E
Use a nonce within OCSP queries
SSLOpenSSLConfCmd command-name command-value		sv	E
Configure OpenSSL parameters through its SSL_CONF API
SSLOptions [+\|-]option ...		svdh	E
Configure various SSL engine run-time options
SSLPassPhraseDialog type	builtin	s	E
Type of pass phrase dialog for encrypted private keys
SSLProtocol [+\|-]protocol ...	all -SSLv3 (up to 2 +	sv	E
Configure usable SSL/TLS protocol versions
SSLProxyCACertificateFile file-path		svp	E
File of concatenated PEM-encoded CA Certificates for Remote Server Auth
SSLProxyCACertificatePath directory-path		svp	E
Directory of PEM-encoded CA Certificates for Remote Server Auth
SSLProxyCARevocationCheck chain\|leaf\|none	none	svp	E
Enable CRL-based revocation checking for Remote Server Auth
SSLProxyCARevocationFile file-path		svp	E
File of concatenated PEM-encoded CA CRLs for Remote Server Auth
SSLProxyCARevocationPath directory-path		svp	E
Directory of PEM-encoded CA CRLs for Remote Server Auth
SSLProxyCheckPeerCN on\|off	on	svp	E
Whether to check the remote server certificate's CN field
SSLProxyCheckPeerExpire on\|off	on	svp	E
Whether to check if remote server certificate is expired
SSLProxyCheckPeerName on\|off	on	svp	E
Configure host name checking for remote server certificates
SSLProxyCipherSuite cipher-spec	ALL:!ADH:RC4+RSA:+H +	svp	E
Cipher Suite available for negotiation in SSL proxy handshake
SSLProxyEngine on\|off	off	svp	E
SSL Proxy Engine Operation Switch
SSLProxyMachineCertificateChainFile filename		svp	E
File of concatenated PEM-encoded CA certificates to be used by the proxy for choosing a certificate
SSLProxyMachineCertificateFile filename		svp	E
File of concatenated PEM-encoded client certificates and keys to be used by the proxy
SSLProxyMachineCertificatePath directory		svp	E
Directory of PEM-encoded client certificates and keys to be used by the proxy
SSLProxyProtocol [+\|-]protocol ...	all -SSLv3 (up to 2 +	svp	E
Configure usable SSL protocol flavors for proxy usage
SSLProxyVerify level	none	svp	E
Type of remote server Certificate verification
SSLProxyVerifyDepth number	1	svp	E
Maximum depth of CA Certificates in Remote Server Certificate verification
SSLRandomSeed context source [bytes]		s	E
Pseudo Random Number Generator (PRNG) seeding source
SSLRenegBufferSize `bytes`	131072	dh	E
Set the size for the SSL renegotiation buffer
SSLRequire expression		dh	E
Allow access only when an arbitrarily complex boolean expression is true
SSLRequireSSL		dh	E
Deny access when SSL is not used for the HTTP request
SSLSessionCache type	none	s	E
Type of the global/inter-process SSL Session Cache
SSLSessionCacheTimeout seconds	300	sv	E
Number of seconds before an SSL session expires in the Session Cache
SSLSessionTicketKeyFile file-path		sv	E
Persistent encryption/decryption key for TLS session tickets
SSLSessionTickets on\|off	on	sv	E
Enable or disable use of TLS session tickets
SSLSRPUnknownUserSeed secret-string		sv	E
SRP unknown user seed
SSLSRPVerifierFile file-path		sv	E
Path to SRP verifier file
SSLStaplingCache type		s	E
Configures the OCSP stapling cache
SSLStaplingErrorCacheTimeout seconds	600	sv	E
Number of seconds before expiring invalid responses in the OCSP stapling cache
SSLStaplingFakeTryLater on\|off	on	sv	E
Synthesize "tryLater" responses for failed OCSP stapling queries
SSLStaplingForceURL uri		sv	E
Override the OCSP responder URI specified in the certificate's AIA extension
SSLStaplingResponderTimeout seconds	10	sv	E
Timeout for OCSP stapling queries
SSLStaplingResponseMaxAge seconds	-1	sv	E
Maximum allowable age for OCSP stapling responses
SSLStaplingResponseTimeSkew seconds	300	sv	E
Maximum allowable time skew for OCSP stapling response validation
SSLStaplingReturnResponderErrors on\|off	on	sv	E
Pass stapling related OCSP errors on to client
SSLStaplingStandardCacheTimeout seconds	3600	sv	E
Number of seconds before expiring responses in the OCSP stapling cache
SSLStrictSNIVHostCheck on\|off	off	sv	E
Whether to allow non-SNI clients to access a name-based virtual host.
SSLUserName varname		sdh	E
Variable name to determine user name
SSLUseStapling on\|off	off	sv	E
Enable stapling of OCSP responses in the TLS handshake
SSLVerifyClient level	none	svdh	E
Type of Client Certificate verification
SSLVerifyDepth number	1	svdh	E
Maximum depth of CA Certificates in Client Certificate verification
StartServers `number`		s	M
Number of child server processes created at startup
StartThreads `number`		s	M
Number of threads created on startup
Substitute `s/pattern/substitution/[infq]`		dh	E
Pattern to filter the response content
SubstituteInheritBefore on\|off	off	dh	E
Change the merge order of inherited patterns
SubstituteMaxLineLength `bytes`(b\|B\|k\|K\|m\|M\|g\|G)	1m	dh	E
Set the maximum line size
Suexec On\|Off		s	B
Enable or disable the suEXEC feature
SuexecUserGroup User Group		sv	E
User and group for CGI programs to run as
ThreadLimit `number`		s	M
Sets the upper limit on the configurable number of threads per child process
ThreadsPerChild `number`		s	M
Number of threads created by each child process
ThreadStackSize `size`		s	M
The size in bytes of the stack used by threads handling client connections
TimeOut `seconds`	60	sv	C
Amount of time the server will wait for certain events before failing a request
TraceEnable `[on\|off\|extended]`	on	sv	C
Determines the behavior on `TRACE` requests
TransferLog `file`\|`pipe`		sv	B
Specify location of a log file
TypesConfig `file-path`	conf/mime.types	s	B
The location of the `mime.types` file
UnDefine `parameter-name`		s	C
Undefine the existence of a variable
UndefMacro `name`		svd	B
Undefine a macro
UnsetEnv `env-variable` [`env-variable`] ...		svdh	B
Removes variables from the environment
Use `name` [`value1` ... `valueN`]		svd	B
Use a macro
UseCanonicalName On\|Off\|DNS	Off	svd	C
Configures how the server determines its own name and port
UseCanonicalPhysicalPort On\|Off	Off	svd	C
Configures how the server determines its own port
User `unix-userid`	#-1	s	B
The userid under which the server will answer requests
UserDir directory-filename [directory-filename] ...		sv	B
Location of the user-specific directories
VHostCGIMode On\|Off\|Secure	On	v	X
Determines whether the virtualhost can run subprocesses, and the privileges available to subprocesses.
VHostPrivs [+-]?`privilege-name` [[+-]?privilege-name] ...		v	X
Assign arbitrary privileges to subprocesses created by a virtual host.
VHostGroup `unix-groupid`		v	X
Sets the Group ID under which a virtual host runs.
VHostPrivs [+-]?`privilege-name` [[+-]?privilege-name] ...		v	X
Assign arbitrary privileges to a virtual host.
VHostSecure On\|Off	On	v	X
Determines whether the server runs with enhanced security for the virtualhost.
VHostUser `unix-userid`		v	X
Sets the User ID under which a virtual host runs.
VirtualDocumentRoot interpolated-directory\|none	none	sv	E
Dynamically configure the location of the document root for a given virtual host
VirtualDocumentRootIP interpolated-directory\|none	none	sv	E
Dynamically configure the location of the document root for a given virtual host
<VirtualHost `addr`[:`port`] [`addr`[:`port`]] ...> ... </VirtualHost>		s	C
Contains directives that apply only to a specific hostname or IP address
VirtualScriptAlias interpolated-directory\|none	none	sv	E
Dynamically configure the location of the CGI directory for a given virtual host
VirtualScriptAliasIP interpolated-directory\|none	none	sv	E
Dynamically configure the location of the CGI directory for a given virtual host
WatchdogInterval `number-of-seconds`	1	s	B
Watchdog interval in seconds
XBitHack on\|off\|full	off	svdh	B
Parse SSI directives in files with the execute bit set
xml2EncAlias `charset alias [alias ...]`		s	B
Recognise Aliases for encoding values
xml2EncDefault `name`		svdh	B
Sets a default encoding to assume when absolutely no information can be automatically detected
xml2StartParse `element [element ...]`		svdh	B
Advise the parser to skip leading junk.

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