Directive Quick Reference - Apache HTTP Server

AcceptMutex default\|method	default	M	s
Method that Apache uses to serialize multiple children accepting requests on network sockets
AcceptPathInfo On\|Off\|Default	Default	C	svdh
Resources accept trailing pathname information
AccessFileName filename [filename] ...	.htaccess	C	sv
Name of the distributed configuration file
Action action-type cgi-script		B	svdh
Activates a CGI script for a particular handler or content-type
AddAlt string file [file] ...		B	svdh
Alternate text to display for a file, instead of an icon selected by filename
AddAltByEncoding string MIME-encoding [MIME-encoding] ...		B	svdh
Alternate text to display for a file instead of an icon selected by MIME-encoding
AddAltByType string MIME-type [MIME-type] ...		B	svdh
Alternate text to display for a file, instead of an icon selected by MIME content-type
AddCharset charset extension [extension] ...		B	svdh
Maps the given filename extensions to the specified content charset
AddDefaultCharset On\|Off\|charset	Off	C	svdh
Default character set to be added for a response without an explicit character set
AddDescription string file [file] ...		B	svdh
Description to display for a file
AddEncoding MIME-enc extension [extension] ...		B	svdh
Maps the given filename extensions to the specified encoding type
AddHandler handler-name extension [extension] ...		B	svdh
Maps the filename extensions to the specified handler
AddIcon icon name [name] ...		B	svdh
Icon to display for a file selected by name
AddIconByEncoding icon MIME-encoding [MIME-encoding] ...		B	svdh
Icon to display next to files selected by MIME content-encoding
AddIconByType icon MIME-type [MIME-type] ...		B	svdh
Icon to display next to files selected by MIME content-type
AddInputFilter filter[;filter...] extension [extension ...]		B	svdh
Maps filename extensions to the filters that will process client requests
AddLanguage MIME-lang extension [extension] ...		B	svdh
Maps the given filename extension to the specified content language
AddModuleInfo module-name string		E	s
Allows additional information to be added to the module information displayed by the server-info handler
AddOutputFilter filter[;filter...] extension [extension ...]		B	svdh
maps the filename extensions to the filters that will process responses from the server
AddType MIME-type extension [extension] ...		B	svdh
Maps the given filename extensions onto the specified content type
Alias URL-path file-path\|directory-path		B	sv
Maps URLs to filesystem locations
AliasMatch regex file-path\|directory-path		B	sv
Maps URLs to filesystem locations using regular expressions
Allow from all\|host\|env=env-variable [host\|env=env-variable] ...		B	dh
Controls which hosts can access an area of the server
AllowCONNECT port [port] ...	443 563	E	sv
Ports that are allowed to `CONNECT` through the proxy
AllowOverride All\|None\|directive-type [directive-type] ...	All	C	d
Types of directives that are allowed in .htaccess files
Anonymous user [user] ...		E	dh
Specifies userIDs that areallowed access without password verification
Anonymous_Authoritative on\|off	off	E	dh
Configures if authorization will fall-through to other methods
Anonymous_LogEmail on\|off	on	E	dh
Sets whether the password entered will be logged in the error log
Anonymous_MustGiveEmail on\|off	on	E	dh
Specifies whether blank passwords are allowed
Anonymous_NoUserID on\|off	off	E	dh
Sets whether the userID field may be empty
Anonymous_VerifyEmail on\|off	off	E	dh
Sets whether to check the password field for a correctly formatted email address
AssignUserID user_id group_id		M	v

AuthAuthoritative on\|off	on	B	dh
Sets whether authorization and authentication are passed to lower level modules
AuthDBMAuthoritative on\|off	on	E	dh
Sets whether authentication and authorization will be passwed on to lower level modules
AuthDBMGroupFile file-path		E	dh
Sets the name of the database file containing the list of user groups for authentication
AuthDBMType default\|SDBM\|GDBM\|NDBM\|DB	default	E	dh
Sets the type of database file that is used to store passwords
AuthDBMUserFile file-path		E	dh
Sets thename of a database file containing the list of users and passwords for authentication
AuthDigestAlgorithm MD5\|MD5-sess	MD5	X	dh
Selects the algorithm used to calculate the challenge and response hases in digest authentication
AuthDigestDomain URI [URI] ...		X	dh
URIs that are in the same protection space for digest authentication
AuthDigestFile file-path		X	dh
Location of the text file containing the list of users and encoded passwords for digest authentication
AuthDigestGroupFile file-path		X	dh
Name of the text file containing the list of groups for digest authentication
AuthDigestNcCheck On\|Off	Off	X	s
Enables or disables checking of the nonce-count sent by the server
???		X	dh
Determines how the nonce is generated
AuthDigestNonceLifetime seconds	300	X	dh
How long the server nonce is valid
AuthDigestQop none\|auth\|auth-int [auth\|auth-int]	auth	X	dh
Determines the quality-of-protection to use in digest authentication
AuthGroupFile file-path		B	dh
Sets the name of a text file containing the list of user groups for authentication
AuthLDAPAuthoritative on\|off	on		dh

AuthLDAPBindDN distinguished-name			dh

AuthLDAPBindPassword password			dh

AuthLDAPCompareDNOnServer on\|off	on		dh

AuthLDAPDereferenceAliases never\|searching\|finding\|always	Always		dh

AuthLDAPEnabled on\|off	on		dh

AuthLDAPFrontPageHack on\|off			dh

AuthLDAPGroupAttribute attribute			dh

AuthLDAPGroupAttributeIsDN on\|off	on		dh

AuthLDAPRemoteUserIsDN on\|off			dh

AuthLDAPStartTLS on\|off			dh

AuthLDAPUrl url			dh

AuthName auth-domain		C	dh
Authorization realm for use in HTTP authentication
AuthType Basic\|Digest		C	dh
Type of user authentication
AuthUserFile file-path		B	dh
Sets the name of a text file containing the list of users and passwords for authentication
BrowserMatch regex [!]env-variable[=value] [[!]env-variable[=value]] ...		B	svdh
Sets environment variables conditional on HTTP User-Agent
BrowserMatchNoCase regex [!]env-variable[=value] [[!]env-variable[=value]] ...		B	svdh
Sets environment variables conditional on User-Agent without respect to case
CacheDefaultExpire seconds	3600 (one hour)	X	s

CacheDisable cache_type url-string		X	s
Disable caching of specified URLs by specified storage manager
CacheEnable cache_type url-string		X	s
Enable caching specified URLs in a specified storage manager
CacheFile file-path [file-path] ...		X	s

CacheForceCompletion Percentage	60	X	s
Percentage of download to arrive for the cache to force complete transfer
CacheIgnoreCacheControl		X	s
Ignore requests from the client for uncached content
CacheIgnoreNoLastMod		X	s
Ignore responses where there is no Last Modified Header
CacheLastModifiedFactor float	0.1	X	s
The factor used to estimate the Expires date from the LastModified date
CacheMaxExpire seconds	86400 (one day)	X	s
The maximum time in seconds to cache a document
CacheMaxStreamingBuffer size_in_bytes	0	X	s
Maximum amount of a streamed response to buffer in memory before declaring the response uncacheable
CacheNegotiatedDocs on\|off	off	B	s
Allows content-negotiated documents to be cached by proxy servers
CGIMapExtension cgi-path .extension		C	dh
Technique for locating the interpreter for CGI scripts
CharsetDefault charset		X	svdh
Charset to translate into
CharsetOptions option [option] ...	DebugLevel=0 NoImp +	X	svdh
Configures charset tranlation behavior
CharsetSourceEnc charset		X	svdh
Source charset of files
CheckSpelling on\|off	Off	E	svdh
Enables the spelling module
ChildPerUserID user_id group_id child_id		M	s

ContentDigest on\|off	off	C	svdh
Enables the generation of Content-MD5 HTTP Response headers
CookieDomain domain		E	svdh
The domain to which the tracking cookie applies
CookieExpires expiry-period		E	svdh
Expiry time for the tracking cookie
CookieLog filename		B	s
Sets filename for the logging of cookies
CookieName token	Apache	E	svdh
Name of the tracking cookie
CookieStyle Netscape\|Cookie\|Cookie2\|RFC2109\|RFC2965	Netscape	E	svdh
Format of the cookie header field
CookieTracking on\|off	off	E	svdh
Enables tracking cookie
CoreDumpDirectory directory		M	s
Directory where Apache attempts to switch before dumping core
CustomLog file\|pipe format\|nickname [env=[!]environment-variable]		B	s
Sets filename and format of log file
Dav on\|off	off	E	d
Enable WebDAV HTTP methods
DavDepthInfinity on\|off	off	E	d
Allow PROPFIND, Depth: Infinity requests
DavLockDB file-path		E	sv
Location of the DAV lock database
DavMinTimeout seconds	0	E	d
Minimum amount of time the server holds a lock on a DAV resource
DefaultIcon url-path		B	svdh
Icon to display for files when no specific icon is configured
DefaultLanguage MIME-lang		B	svdh
Sets all files in the given scope to the specified language
DefaultType MIME-type	text/plain	C	svdh
MIME content-type that will be sent if the server cannot determine a type in any other way
DeflateBufferSize value	8096	E	sv
Fragment size to be compressed at one time by zlib
DeflateFilterNote notename		E	sv
Places the compression ratio in a note for logging
DeflateMemLevel value	9	E	sv
How much memory should be used by zlib for compression
DeflateWindowSize value	15	E	sv
Zlib compression window size
Deny from all\|host\|env=env-variable [host\|env=env-variable] ...		B	dh
Controls which hosts are denied access to the server
<Directory directory-path> ... </Directory>		C	sv
Enclose a group of directives that apply only to the named file-system directory and sub-directories
DirectoryIndex local-url [local-url] ...	index.html	B	svdh
List of resources to look for when the client requests a directory
<Directory regex> ... </Directory>		C	sv
Enclose a group of directives that apply only to file-system directories that match a regular expression and their subdirectories
DocumentRoot directory-path	/usr/local/apache/h +	C	sv
Directory that forms the main document tree visible from the web
EnableMMAP on\|off	on	C	svdh
Use memory-mapping to read files during delivery
ErrorDocument error-code document		C	svdh
What the server will return to the client in case of an error
ErrorLog file-path\|syslog[:facility]	logs/error_log (Uni +	C	sv
Location where the server will log errors
Example		X	svdh
Demonstration directive to illustrate the Apache module API
ExpiresActive On\|Off		E	svdh
Enables generation of `Expires` headers
ExpiresByType MIME-type <code>seconds		E	svdh
Value of the `Expires` header configured by MIME type
ExpiresDefault <code>seconds		E	svdh
Default algorithm for calculating expiration time
ExtendedStatus On\|Off	Off	B	s
This directive controls whether the server keeps track of extended status information for each request. This is only useful if the status module is enabled on the server.
ExtFilterDefine filtername parameters		X	s

ExtFilterOptions option [option] ...	DebugLevel=0 NoLogS +	X	d

FileETag component ...	INode MTime Size	C	svdh
File attributes used to create the ETag HTTP response header
<Files filename> ... </Files>		C	svdh
Contains directives that apply to matched filenames
<FilesMatch regex> ... </FilesMatch>		C	svdh
Contains directives that apply to regular-expression matched filenames
ForceLanguagePriority None\|Prefer\|Fallback [Prefer\|Fallback]	Prefer	B	svdh
Action to take if a single acceptable document is not found
ForceType mime-type		C	dh
Forces all matching files to be served with the specified MIME content-type
Group unix-group	#-1	M	sv
Group under which the server will answer requests
Header set\|append\|add\|unset\|echo header [value]		E	svdh
Configure HTTP response headers
HeaderName filename		B	svdh
Name of the file that will be inserted at the top of the index listing
HostnameLookups on\|off\|double	off	C	svd
Enables DNS lookups on client IP addresses
IdentityCheck on\|off	off	C	svd
Enables logging of the RFC1413 identity of the remote user
<IfDefine [!]parameter-name> ... </IfDefine>		C	svdh
Encloses directives that will be processed only if a test is true at startup
<IfModule [!]module-name> ... </IfModule>		C	svdh
Encloses directives that are processed conditional on the presence of absence of a specific module
ImapBase map\|referer\|URL	http://servername/	B	svdh
Default `base` for imagemap files
ImapDefault error\|nocontent\|map\|referer\|URL	nocontent	B	svdh
Default action when an imagemap is called with coordinates that are not explicitly mapped
ImapMenu none\|formatted\|semiformatted\|unformatted		B	svdh
Action if no coordinates are given when calling an imagemap
Include file-path\|directory-path		C	svd
Includes other configuration files from within the server configuration files
IndexIgnore file [file] ...		B	svdh
Adds to the list of files to hide when listing a directory
IndexOptions [+\|-]option [[+\|-]option] ...		B	svdh
Various configuration settings for directory indexing
IndexOrderDefault Ascending\|Descending Name\|Date\|Size\|Description	Ascending Name	B	svdh
Sets the default ordering of the directory index
ISAPIAppendLogToErrors on\|off	off	B	svdh
Record HSE_APPEND_LOG_PARAMETER requests from ISAPI extensions to the error log
ISAPIAppendLogToQuery on\|off	on	B	svdh
Record HSE_APPEND_LOG_PARAMETER requests from ISAPI extensions to the query field
ISAPICacheFile file-path [file-path] ...		B	sv
ISAPI .dll files to be loaded at startup
ISAPIFakeAsync on\|off	off	B	svdh
Fake asynchronous support for isapi callbacks
ISAPILogNotSupported on\|off	off	B	svdh
Log unsupported feature requests from ISAPI extensions
ISAPIReadAheadBuffer size	49152	B	sdh
Size of the Read Ahead Buffer sent to ISAPI extensions
KeepAlive on\|off	On	C	sv
Enables HTTP persistent connections
KeepAliveTimeout seconds	15	C	sv
Amount of time the server will wait for subsequent requests on a persistent connection
LanguagePriority MIME-lang [MIME-lang] ...		B	svdh
The precendence of language variants for cases where the client does not express a preference
LDAPCacheEntries number	1024		s

LDAPCacheTTL seconds	600		s

LDAPCertDBPath directory-path			s

LDAPOpCacheEntries number	1024		s

LDAPOpCacheTTL seconds	600		s

LDAPSharedCacheSize bytes	102400		s

<Limit method [method] ... > ... </Limit>		C	svdh
Restrict enclosed access controls to only certain HTTP methods
<LimitExcept method [method] ... > ... </LimitExcept>		C	svdh
Restrict access controls to all HTTP methods except the named ones
LimitRequestBody bytes	0	C	svdh
Restricts the total size of the HTTP request body sent from the client
LimitRequestFields number	100	C	s
Limits the number of HTTP request header fields that will be accepted from the client
LimitRequestFieldsize bytes		C	s
Limits the size of the HTTP request header allowed from the client
LimitRequestLine bytes	8190	C	s
Limit the size of the HTTP request line that will be accepted from the client
LimitXMLRequestBody number	1000000	C	svdh
Limits the size of an XML-based request body
Listen [IP-address:]portnumber		M	s
IP addresses and ports that the server listens to
ListenBacklog backlog		M	s
Maximum length of the queue of pending connections
LoadFile filename [filename] ...			s
Link in the named object file or library
LoadModule module filename			s
Links in the object file or library, and adds to the list of active modules
<Location URL-path\|URL> ... </Location>		C	sv
Applies the enclosed directives only to matching URLs
<LocationMatch regex> ... </Location>		C	sv
Applies the enclosed directives only to regular-expression matching URLs
LockFile filename	logs/accept.lock	M	s
Location of the accept serialization lock file
LogFormat format\|nickname [nickname]	"%h %l %u %t \"%r\" +	B	s
Describes a format for use in a log file
LogLevel level	warn	C	sv
Controls the verbosity of the ErrorLog
MaxClients number		M	s
Maximum number of child processes that will be created to serve requests
MaxKeepAliveRequests number	100	C	sv
Number of requests allowed on a persistent connection
MaxMemFree number		M	s
Maximum amount of memory that the main allocator is allowed to hold without calling free()
MaxRequestsPerChild number	10000	M	s
Limit on the number of requests that an individual child server will handle during its life
MaxSpareServers number	10	M	s
Maximum number of idle child server processes
MaxSpareThreads number		M	s
Maximum number of idle threads
MaxThreads number	250	M	s

MaxThreadsPerChild number	64	M	s
Maximum number of threads per child process
MetaDir directory	.web	E	svdh
Name of the directory to find CERN-style meta information files
MetaFiles on\|off	off	E	svdh
Activates CERN meta-file processing
MetaSuffix suffix	.meta	E	svdh
File name suffix for the file containg CERN-style meta information
MimeMagicFile file-path		E	sv
Enable MIME-type determination based on file contents using the specified magic file
MinSpareServers number	5	M	s
Minimum number of idle child server processes
MinSpareServers number		M	s
Minimum number of idle threads available to handle request spikes
MMapFile file-path [file-path] ...		X	s

ModMimeUsePathInfo On\|Off		B	svdh
Tells mod_mime to treat path_info components as part of the filename
MultiviewsMatch [NegotiatedOnly] [Handlers] [Filters] [Any]		B	svdh
The types of files that will be included when searching for a matching file with MultiViews
NameVirtualHost addr[:port]		C	s
Designates an IP address for name-virtual hosting
NoProxy Domain\| SubNet\| IpAddr\| Hostname [Domain\| SubNet\| IpAddr\| Hostname] ...		E	sv
Hosts, domains, or networks that will be connected to directly
NumServers number	2	M	s
Total number of children alive at the same time
Options [+\|-]option [[+\|-]option] ...	All	C	svdh
Configures what features are available in a particular directory
Order ordering	Deny,Allow	B	dh
Controls the default access state and the order in which `Allow` and `Deny` are evaluated.
PassEnv env-variable [env-variable] ...		B	svdh
Passes environment variables from the shell
PidFile filename	logs/httpd.pid	M	s
File where the server records the process ID of the daemon
ProtocolEcho On\|Off		X	sv
Turn the echo server on or off
<Proxy wildcard-url> ...</Proxy>		E	sv
Container for directives applied to proxied resources
ProxyBlock \|word\|host\|domain* [word\|host\|domain] ...		E	sv
Words, hosts, or domains that are banned from being proxied
ProxyDomain Domain		E	sv
Default domain name for proxied requests
ProxyErrorOverride On\|Off	Off	E	sv
Override error pages for proxied content
ProxyIOBufferSize bytes		E	sv
IO buffer size for outgoing HTTP and FTP connections
<Proxy regex> ...</Proxy>		E	sv
Container for directives applied to regular-expression-matched proxied resources
ProxyMaxForwards number	10	E	sv
Maximium number of proxies that a request can be forwarded through
ProxyPass [path] !\|url		E	sv
Maps remote servers into the local server URL-space
ProxyPassReverse [path] url		E	sv
Adjusts the URL in HTTP response headers sent from a reverse proxied server
ProxyPreserveHost on\|off	Off	E	sv
Use incoming Host HTTP request header for proxy request
ProxyReceiveBufferSize bytes		E	sv
Network buffer size for outgoing HTTP and FTP connections
ProxyRemote match remote-server		E	sv
Remote proxy used to handle certain requests
ProxyRemote regex remote-server		E	sv
Remote proxy used to handle requests matched by regular expressions
ProxyRequests on\|off	Off	E	sv
Enables forward (standard) proxy requests
ProxyTimeout seconds	300	E	sv
Network timeout for proxied requests
ProxyVia on\|off\|full\|block	off	E	sv
Information provided in the `Via` HTTP response header for proxied requests
ReadmeName filename		B	svdh
Name of the file that will be inserted at the end of the index listing
Redirect [status] URL-path URL		B	svdh
Sends an external redirect asking the client to fetch a different URL
RedirectMatch [status] regex URL		B	svdh
Sends an external redirect asking the client to fetch a different URL based on a regular expression match of the current URL
RedirectPermanent URL-path URL		B	svdh
Sends an external permanent redirect asking the client to fetch a different URL
RedirectTemp URL-path URL		B	svdh
Sends an external temporary redirect asking the client to fetch a different URL
RemoveCharset extension [extension] ...		B	vdh
Removes any character set associations for a set of file extensions
RemoveEncoding extension [extension] ...		B	vdh
Removes any content encoding associations for a set of file extensions
RemoveHandler extension [extension] ...		B	vdh
Removes any handler associations for a set of file extensions
RemoveInputFilter extension [extension] ...		B	vdh
Removes any input filter associations for a set of file extensions
RemoveLanguage extension [extension] ...		B	vdh
Removes any language associations for a set of file extensions
RemoveOutputFilter extension [extension] ...		B	vdh
Removes any output filter associations for a set of file extensions
RemoveType extension [extension] ...		B	vdh
Removes any content type associations for a set of file extensions
RequestHeader set\|append\|add\|unset header [value]		E	svdh
Configure HTTP request headers
Require entity-name [entity-name] ...		C	dh
Selects which authenticated users can access a resource
RewriteBase URL-path		E	dh
Sets the base URL for per-directory rewrites
RewriteCond TestString CondPattern		E	svdh
Defines a condition under which rewriting will take place
RewriteEngine on\|off	off	E	svdh
Enables or disables runtime rewriting engine
RewriteLock file-path		E	s
Sets the name of the lock file used for `RewriteMap` synchronization
RewriteLog file-path		E	sv
Sets the name of the file used for logging rewrite engine processing
RewriteLogLevel Level		E	sv
Sets the verbosity of the log file used by the rewrite engine
RewriteMap MapName MapType:MapSource		E	sv
Defines a mapping function for key-lookup
RewriteOptions Options		E	svdh
Sets some special options for the rewrite engine
RewriteRule Pattern Substitution		E	svdh
Defines rules for the rewriting engine
RLimitCPU number\|max [number\|max]		C	svdh
Limits the CPU consumption of processes launched by Apache children
RLimitMEM number\|max [number\|max]		C	svdh
Limits the memory consumption of processes launched by Apache children
RLimitNPROC number\|max [number\|max]		C	svdh
Limits the number of processes that can be launched by processes launched by Apache children
Satisfy any\|all	all	C	dh
Interaction between host-level access control and user authentication
ScoreBoardFile file-path	logs/apache_status	M	s
Location of the file used to store coordination data for the child processes
Script method cgi-script		B	svd
Activates a CGI script for a particular request method.
ScriptAlias URL-path file-path\|directory-path		B	sv
Maps a URL to a filesystem location and designates the target as a CGI script
ScriptAliasMatch regex file-path\|directory-path		B	sv
Maps a URL to a filesystem location using a regular expression and designates the target as a CGI script
ScriptInterpreterSource registry\|script	script	C	svdh
Technique for locating the interpreter for CGI scripts
ScriptLog file-path		B	sv
Location of the CGI script error logfile
ScriptLogBuffer bytes	1024	B	sv
Maximum amount of PUT or POST requests that will be recorded in the scriptlog
ScriptLogLength bytes	10385760	B	sv
Size limit of the CGI script logfile
ScriptSock file-path	logs/cgisock	B	sv

SendBufferSize bytes		M	s
TCP buffer size
ServerAdmin email-address		C	sv
Email address that the server includes in error messages sent to the client
ServerAlias hostname [hostname] ...		C	v
Alternate names for a host used when matching requests to name-virtual hosts
ServerLimit number	256 (prefork), Serv +	M	s
Upper limit on configurable number of processes
ServerName fully-qualified-domain-name[:port]		C	sv
Hostname and port that the server uses to identify itself
ServerPath URL-path		C	v
Legacy URL pathname for a name-virtual host that is accessed by an incompatible browser
ServerRoot directory-path	/usr/local/apache	C	s
Base directory for the server installation
ServerSignature On\|Off\|EMail	Off	C	svdh
Configures the footer on server-generated documents
ServerTokens Major\|Minor\|Minimal\|ProductOnly\|OS\|Full	Full	C	s
Configures the Server HTTP response header
SetEnv env-variable value		B	svdh
Sets environment variables
SetEnvIf attribute regex [!]env-variable[=value] [[!]env-variable[=value]] ...		B	svdh
Sets environment variables based on attributes of the request
SetEnvIfNoCase attribute regex [!]env-variable[=value] [[!]env-variable[=value]] ...		B	svdh
Sets environment variables based on attributes of the request without respect to case
SetHandler handler-name		C	svdh
Forces all matching files to be processed by a handler
SetInputFilter filter[;filter...]		C	svdh
Sets the filters that will process client requests and POST input
SetOutputFilter filter[;filter...]		C	svdh
Sets the filters that will process responses from the server
SSIEndTag tag	"-->"	B	sv
String that ends an include element
SSIErrorMsg message	"[an error occurre +	B	svdh
Error message displayed when there is an SSI error
Changes the string that mod_include looks for to start an include element	"<!--"	B	sv
String that starts an include element
SSITimeFormat formatstring	"%A, %d-%b-%Y %H:%M +	B	svdh
Configures the format in which date strings are displayed
SSIUndefinedEcho tag	"<!-- undef -->"	B	sv
String displayed when an unset variable is echoed
SSLCACertificateFile file-path		E	sv
File of concatenated PEM-encoded CA Certificates for Client Auth
SSLCACertificatePath directory-path		E	sv
Directory of PEM-encoded CA Certificates for Client Auth
SSLCARevocationFile file-path		E	sv
File of concatenated PEM-encoded CA CRLs for Client Auth
SSLCARevocationPath directory-path		E	sv
Directory of PEM-encoded CA CRLs for Client Auth
SSLCertificateChainFile file-path		E	sv
File of PEM-encoded Server CA Certificates
SSLCertificateFile file-path		E	sv
Server PEM-encoded X.509 Certificate file
SSLCertificateKeyFile file-path		E	sv
Server PEM-encoded Private Key file
SSLCipherSuite cipher-spec	ALL:!ADH:RC4+RSA:+H +	E	svdh
Cipher Suite available for negotiation in SSL handshake
SSLEngine on\|off	off	E	sv
SSL Engine Operation Switch
SSLMutex type	none	E	s
Semaphore for internal mutual exclusion of operations
SSLOptions [+\|-]option ...		E	svdh
Configure various SSL engine run-time options
SSLPassPhraseDialog type	builtin	E	s
Type of pass phrase dialog for encrypted private keys
SSLProtocol [+\|-]protocol ...	all	E	sv
Configure usable SSL protocol flavors
SSLProxyCACertificateFile file-path		E	sv
File of concatenated PEM-encoded CA Certificates for Remote Server Auth
SSLProxyCACertificatePath directory-path		E	sv
Directory of PEM-encoded CA Certificates for Remote Server Auth
SSLProxyCARevocationFile file-path		E	sv
File of concatenated PEM-encoded CA CRLs for Remote Server Auth
SSLProxyCARevocationPath directory-path		E	sv
Directory of PEM-encoded CA CRLs for Remote Server Auth
SSLProxyCipherSuite cipher-spec	ALL:!ADH:RC4+RSA:+H +	E	svdh
Cipher Suite available for negotiation in SSL proxy handshake
SSLProxyEngine on\|off	off	E	sv
SSL Proxy Engine Operation Switch
SSLProxyMachineCertificateFile filename		E	s
File of concatenated PEM-encoded CA certificates for proxy server client certificates
SSLProxyMachineCertificatePath directory		E	s
Directory of PEM-encoded CA certificates for proxy server client certificates
SSLProxyProtocol [+\|-]protocol ...	all	E	sv
Configure usable SSL protocol flavors for proxy usage
SSLProxyVerify level	none	E	svdh
Type of remote server Certificate verification
SSLVerifyDepth number		E	svdh
Maximum depth of CA Certificates in Remote Server Certificate verification
SSLRandomSeed context source [bytes]		E	s
Pseudo Random Number Generator (PRNG) seeding source
SSLRequire expression		E	dh
Allow access only when an arbitrarily complex boolean expression is true
SSLRequireSSL		E	dh
Deny access when SSL is not used for the HTTP request
SSLSessionCache type	none	E	s
Type of the global/inter-process SSL Session Cache
SSLSessionCacheTimeout seconds	300	E	sv
Number of seconds before an SSL session expires in the Session Cache
SSLVerifyClient level	none	E	svdh
Type of Client Certificate verification
SSLVerifyDepth number	1	E	svdh
Maximum depth of CA Certificates in Client Certificate verification
StartServers number	5	M	s
Number of child server processes created at startup
StartThreads number		M	s
Nubmer of threads created on startup
SuexecUserGroup User Group		E	sv
User and group permissions for CGI programs
ThreadLimit number		M	s
Sets the upper limit on the configurable number of threads per child process
ThreadsPerChild number		M	s
Number of threads created by each child process
ThreadStackSize number	65536	M	s

TimeOut number	300	C	s
Amount of time the server will wait for certain events before failing a request
TransferLog file\|pipe		B	s
Specifly location of a log file
TypesConfig file-path	conf/mime.types	B	s
The location of the mime.types file
UnsetEnv env-variable [env-variable] ...		B	svdh
Removes variables from the environment
UseCanonicalName on\|off\|dns	on	C	svd
Configures how the server determines its own name and port
User unix-userid	#-1	M	sv
The userid under which the server will answer requests
UserDir directory-filename	public_html	B	s
Location of the user-specific directories
VirtualDocumentRoot interpolated-directory		E	sv
Dynamically configure the location of the document root for a given virtual host
VirtualDocumentRootIP interpolated-directory		E	sv
Dynamically configure the location of the document root for a given virtual host
<VirtualHost addr[:port] [addr[:port]] ...> ... </VirtualHost>		C	s
Contains directives that apply only to a specific hostname or IP address
VirtualScriptAlias interpolated-directory		E	sv
Dynamically configure the location of the CGI directory for a given virtual host
VirtualScriptAliasIP interpolated-directory		E	sv
Dynamically configure the location of the cgi directory for a given virtual host
XBitHack on\|off\|full	off	B	svdh
Parse SSI directives in files with the execute bit set