Modules | Directives | FAQ | Glossary | Sitemap

Apache HTTP Server Version 2.0

Apache > HTTP Server > Documentation > Version 2.0 > Modules

Directive Quick Reference

The directive quick reference shows the usage, default, status, and context of each Apache configuration directive. For more information about each of these, see the Directive Dictionary.

The first column gives the directive name and usage. The second columns shows the default value of the directive, if a default exists. If the default is too large to display, the first characters will be followed by "+".

The third and fourth columns list the contexts where the directive is allowed and the status of the directive according to the legend tables below.

A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  K  |  L  |  M  |  N  |  O  |  P  |  R  |  S  |  T  |  U  |  V  |  W  |  X

s server config v virtual host d directory h .htaccess

C Core M MPM B Base E Extension X Experimental

AcceptMutex Default|method	Default	s	M
Method that Apache uses to serialize multiple children accepting requests on network 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		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 MIME-enc 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 MIME-lang 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...] MIME-type [MIME-type] ...		svdh	C
assigns an output filter to a particular MIME-type
AddType MIME-type extension [extension] ...		svdh	B
Maps the given filename extensions onto the specified content type
Alias URL-path file-path|directory-path		sv	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	B
Controls which hosts can access an area of the server
AllowCONNECT port [port] ...	443 563	sv	E
Ports that are allowed to CONNECT through the proxy
AllowEncodedSlashes On|Off	Off	sv	C
Determines whether encoded path separators in URLs are allowed to be passed through
AllowOverride All|None|directive-type [directive-type] ...	All	d	C
Types of directives that are allowed in .htaccess files
Anonymous user [user] ...		dh	E
Specifies userIDs that are allowed access without password verification
Anonymous_Authoritative On|Off	Off	dh	E
Configures if authorization will fall-through to other methods
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
AssignUserID user-id group-id		v	M
Tie a virtual host to a user and group ID
AuthAuthoritative On|Off	On	dh	B
Sets whether authorization and authentication are passed to lower level modules
AuthDBMAuthoritative On|Off	On	dh	E
Sets whether authentication and authorization will be passed on to lower level modules
AuthDBMGroupFile file-path		dh	E
Sets the name of the database file containing the list of user groups for authentication
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 thename of a database file containing the list of users and passwords for authentication
AuthDigestAlgorithm MD5|MD5-sess	MD5	dh	X
Selects the algorithm used to calculate the challenge and response hases in digest authentication
AuthDigestDomain URI [URI] ...		dh	X
URIs that are in the same protection space for digest authentication
AuthDigestFile file-path		dh	X
Location of the text file containing the list of users and encoded passwords for digest authentication
AuthDigestGroupFile file-path		dh	X
Name of the text file containing the list of groups for digest authentication
AuthDigestNcCheck On|Off	Off	s	X
Enables or disables checking of the nonce-count sent by the server
AuthDigestNonceFormat format		dh	X
Determines how the nonce is generated
AuthDigestNonceLifetime seconds	300	dh	X
How long the server nonce is valid
AuthDigestQop none|auth|auth-int [auth|auth-int]	auth	dh	X
Determines the quality-of-protection to use in digest authentication
AuthDigestShmemSize size	1000	s	X
The amount of shared memory to allocate for keeping track of clients
AuthGroupFile file-path		dh	B
Sets the name of a text file containing the list of user groups for authentication
AuthLDAPAuthoritative on|off	on	dh	X
Prevent other authentication modules from authenticating the user if this one fails
AuthLDAPBindDN distinguished-name		dh	X
Optional DN to use in binding to the LDAP server
AuthLDAPBindPassword password		dh	X
Password used in conjuction with the bind DN
AuthLDAPCharsetConfig file-path		s	X
Language to charset conversion configuration file
AuthLDAPCompareDNOnServer on|off	on	dh	X
Use the LDAP server to compare the DNs
AuthLDAPDereferenceAliases never|searching|finding|always	Always	dh	X
When will the module de-reference aliases
AuthLDAPEnabled on|off	on	dh	X
Turn on or off LDAP authentication
AuthLDAPFrontPageHack on|off	off	dh	X
Allow LDAP authentication to work with MS FrontPage
AuthLDAPGroupAttribute attribute		dh	X
LDAP attributes used to check for group membership
AuthLDAPGroupAttributeIsDN on|off	on	dh	X
Use the DN of the client username when checking for group membership
AuthLDAPRemoteUserIsDN on|off	off	dh	X
Use the DN of the client username to set the REMOTE_USER environment variable
AuthLDAPUrl url		dh	X
URL specifying the LDAP search parameters
AuthName auth-domain		dh	C
Authorization realm for use in HTTP authentication
AuthType Basic|Digest		dh	C
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
BrowserMatch regex [!]env-variable[=value] [[!]env-