33

To enable RFC1413-compliant logging of the remote user name for each connection, where the client machine runs identd or something similar.

Default : IdentityCheck off

Version 1.3 +

IdentityCheck on|off

34

To define some directives that will be processed only if a certain condition is true

Default: None

Version 1.3 +

<IfDefine [!]parameter-name> ... </IfDefine>

Example :

# httpd.conf
<IfDefine ReverseProxy>
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule proxy_module modules/libproxy.so
</IfDefine>

35

To define some directives that will be processed only if a certain condition is true

Default: None

Version 1.2 +

<IfModule [!]module-name> ... </IfModule>

36

To include other configuration files from within the server configuration files.

Version 1.3 +
Version 1.3.27 + with wildcards

Include file-path|directory-path|wildcard-path

Example :

Include /usr/local/apache2/conf/ssl.conf
Include /usr/local/apache2/conf/vhosts/*.conf

Include conf/ssl.conf
Include conf/vhosts/*.conf

37

To provide long-lived HTTP sessions and allow multiple requests to be sent over the same TCP connection.

Version 1.1

Default :  KeepAlive 5

KeepAlive max-requests

Version 1.2 +

Default : KeepAlive On

KeepAlive on|off

38

To keep a connection open for a number of seconds before Apache close it.

Default : KeepAliveTimeout 15

Version 1.1 +

KeepAliveTimeout seconds

39

To restrict the effect of the access controls to the nominated HTTP methods

Version 1.3+

<Limit method [method] ... > ... </Limit>

Example :

<Limit POST PUT DELETE>
Require valid-user
</Limit>

40

To enclose a group of access control directives which will then apply to any HTTP access method not listed in the arguments

Version 1.3.5+

<LimitExcept method [method] ... > ... </LimitExcept>

Example :

<LimitExcept POST GET>
Require valid-user
</LimitExcept>

41

To prevent the server from crashing when entering an infinite loop of internal redirects or subrequests.

Default : LimitInternalRecursion 20

Version 1.3.28+

LimitInternalRecursion number [number]

Default : LimitInternalRecursion 10

Version 2.0.47+

LimitInternalRecursion number [number]

42

To specify the number of bytes that is allowed in a request body.

0 (meaning unlimited) to 2147483647 (2GB)

Default : LimitRequestBody 0

Version 1.3.2+

LimitRequestBody bytes

43

To allow the server administrator to modify the limit on the number of request header fields allowed in an HTTP request.

0 (meaning unlimited) to 32767.

Default : LimitRequestFields 100

Version 1.3.2+

LimitRequestFields number

44

To allow the server administrator to reduce the limit on the allowed size of an HTTP request header field below the normal input buffer size compiled with the server.

Default : LimitRequestFieldsize 8190

Version 1.3.2+

LimitRequestFieldsize bytes

45

To allow the server administrator to reduce the limit on the allowed size of a client's HTTP request-line below the normal input buffer size compiled with the server.

Default : LimitRequestLine 8190

Version 1.3.2+

LimitRequestLine bytes

8

To limit (in bytes) on maximum size of an XML-based request body.

Default : LimitXMLRequestBody 1000000

Version 2.0 +

LimitXMLRequestBody bytes

46

To instruct Apache to listen to more than one IP address or port.

(can be used instead of BindAddress)

Version 1.1

Listen [IP-address:]port

47

To specify the maximum length of the queue of pending connections.

Default : ListenBacklog 511

Version 1.2

ListenBacklog backlog

48

To provide for access control by URL.

Version 1.1 +

<Location URL-path|URL> ... </Location>

Example :

<Location /status>
SetHandler server-status
Order Deny,Allow
Deny from all
Allow from .foo.com
</Location>

49

To provide for access control by URL, and takes a regular expression as an argument instead of a simple string.

Version 1.3+

<LocationMatch regex> ... </LocationMatch>

Example : <LocationMatch "/(extra|special)/data">

50

To set the path to the lockfile. The main reason for changing it is if the logs directory is NFS mounted.

Default : LockFile logs/accept.lock

Version 1.3

LockFile file-path

51

To adjust the verbosity of the messages recorded in the error logs.

Default : LogLevel warn

Version 1.3+

LogLevel level

52

To set the limit on the number of simultaneous requests that can be supported; not more than this number of child server processes will be created.

Default : MaxClients 256

Version 1.3

MaxClients number

53

To limit the number of requests allowed per connection when KeepAlive is on.

Default : MaxKeepAliveRequests 100

Version 1.2+

MaxKeepAliveRequests number

54

To set the limit on the number of requests that an individual child server process will handle.

( 0 means that the process will never expire)

Default : MaxRequestsPerChild 0

Version 1.3

MaxRequestsPerChild number

55

To set the desired maximum number of idle child server processes.

Default : MaxSpareServers 10

Version 1.3

MaxSpareServers number

56

To set the desired minimum number of idle child server processes.

Default : MinSpareServers 5

Version 1.3

MinSpareServers number

57

To configure name-based virtual hosts, NameVirtualHost must be used.

Version 1.3+

NameVirtualHost addr[:port]

Example :

NameVirtualHost 111.22.33.44

NameVirtualHost 111.22.33.44:8080

NameVirtualHost [2001:db8::a00:20ff:fea7:ccea]:8080

NameVirtualHost *

58

To control which server features are available in a particular directory.

Version 1.3+

Options [+|-]option [[+|-]option] ...

Example :

<Directory /web/docs>
Options Indexes FollowSymLinks
</Directory>

 

<Directory /web/docs/spec>
Options Includes
</Directory>

<Directory /web/docs>
Options Indexes FollowSymLinks
</Directory>

<Directory /web/docs/spec>
Options +Includes -Indexes
</Directory>

59

To set the file to which the server records the process id of the daemon.

Default : PidFile logs/httpd.pid

Version 1.3

PidFile file-path

60

* In the absence of any Listen or BindAddress directives Port directive is used.

* To set the SERVER_PORT environment variable.

Default : Port 80

Version 1.3

Port number

61

To enable strict checking of the Protocol field in the Request line.

Default : ProtocolReqCheck on

Version 1.3.27