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<title>Module Index - Apache HTTP Server Version 2.4</title>
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<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p>
<p class="apache">Apache HTTP Server Version 2.4</p>
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<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.4</a></div><div id="page-content"><div id="preamble"><h1>Module Index</h1>
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<p><span>Available Languages: </span><a href="../de/mod/" hreflang="de" rel="alternate" title="Deutsch">&nbsp;de&nbsp;</a> |
<a href="../en/mod/" title="English">&nbsp;en&nbsp;</a> |
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<a href="../zh-cn/mod/" hreflang="zh-cn" rel="alternate" title="Simplified Chinese">&nbsp;zh-cn&nbsp;</a></p>
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    <p>
      Below is a list of all of the modules that come as part of
      the Apache HTTP Server distribution.  See also the complete
      alphabetical list of <a href="directives.html">all Apache HTTP Server
      directives</a>.
    </p>
  </div>
<div id="quickview"><ul id="toc">
<li><img alt="" src="../images/down.gif" /> <a href="#core">Core Features and Multi-Processing
            Modules</a></li><li><img alt="" src="../images/down.gif" /> <a href="#other">Other Modules</a></li></ul><h3>See also</h3>
<ul class="seealso">
<li><a href="../mpm.html">Multi-Processing Modules (MPMs)</a>
  </li>
<li><a href="quickreference.html">Directive Quick Reference</a>
  </li>
</ul></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section"><h2><a id="core" name="core">Core Features and Multi-Processing
            Modules</a></h2>
<dl>
<dt><a href="core.html">core</a></dt><dd>Core Apache HTTP Server features that are always
available</dd>
<dt><a href="mpm_common.html">mpm_common</a></dt><dd class="separate">A collection of directives that are implemented by
more than one multi-processing module (MPM)</dd>
<dt><a href="event.html">event</a></dt><dd>A variant of the <code class="module"><a href="../mod/worker.html">worker</a></code> MPM with the goal
of consuming threads only for connections with active processing</dd>
<dt><a href="mpm_netware.html">mpm_netware</a></dt><dd>Multi-Processing Module implementing an exclusively threaded web
    server optimized for Novell NetWare</dd>
<dt><a href="mpmt_os2.html">mpmt_os2</a></dt><dd>Hybrid multi-process, multi-threaded MPM for OS/2</dd>
<dt><a href="prefork.html">prefork</a></dt><dd>Implements a non-threaded, pre-forking web server</dd>
<dt><a href="mpm_winnt.html">mpm_winnt</a></dt><dd>Multi-Processing Module optimized for Windows NT.</dd>
<dt><a href="worker.html">worker</a></dt><dd>Multi-Processing Module implementing a hybrid
    multi-threaded multi-process web server</dd>
</dl></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section"><h2><a id="other" name="other">Other Modules</a></h2>
<p class="letters"><a href="#A">&nbsp;A&nbsp;</a> | <a href="#B">&nbsp;B&nbsp;</a> | <a href="#C">&nbsp;C&nbsp;</a> | <a href="#D">&nbsp;D&nbsp;</a> | <a href="#E">&nbsp;E&nbsp;</a> | <a href="#F">&nbsp;F&nbsp;</a> | <a href="#H">&nbsp;H&nbsp;</a> | <a href="#I">&nbsp;I&nbsp;</a> | <a href="#L">&nbsp;L&nbsp;</a> | <a href="#M">&nbsp;M&nbsp;</a> | <a href="#N">&nbsp;N&nbsp;</a> | <a href="#P">&nbsp;P&nbsp;</a> | <a href="#R">&nbsp;R&nbsp;</a> | <a href="#S">&nbsp;S&nbsp;</a> | <a href="#U">&nbsp;U&nbsp;</a> | <a href="#V">&nbsp;V&nbsp;</a> | <a href="#W">&nbsp;W&nbsp;</a> | <a href="#X">&nbsp;X&nbsp;</a></p>
<dl><dt><a href="mod_access_compat.html" id="A" name="A">mod_access_compat</a></dt><dd>Group authorizations based on host (name or IP
address)</dd>
<dt><a href="mod_actions.html">mod_actions</a></dt><dd>Execute CGI scripts based on media type or request method.</dd>
<dt><a href="mod_alias.html">mod_alias</a></dt><dd>Provides for mapping different parts of the host
    filesystem in the document tree and for URL redirection</dd>
<dt><a href="mod_allowmethods.html">mod_allowmethods</a></dt><dd>Easily restrict what HTTP methods can be used on the server</dd>
<dt><a href="mod_asis.html">mod_asis</a></dt><dd>Sends files that contain their own
HTTP headers</dd>
<dt><a href="mod_auth_basic.html">mod_auth_basic</a></dt><dd>Basic HTTP authentication</dd>
<dt><a href="mod_auth_digest.html">mod_auth_digest</a></dt><dd>User authentication using MD5
    Digest Authentication</dd>
<dt><a href="mod_auth_form.html">mod_auth_form</a></dt><dd>Form authentication</dd>
<dt><a href="mod_authn_anon.html">mod_authn_anon</a></dt><dd>Allows "anonymous" user access to authenticated
    areas</dd>
<dt><a href="mod_authn_core.html">mod_authn_core</a></dt><dd>Core Authentication</dd>
<dt><a href="mod_authn_dbd.html">mod_authn_dbd</a></dt><dd>User authentication using an SQL database</dd>
<dt><a href="mod_authn_dbm.html">mod_authn_dbm</a></dt><dd>User authentication using DBM files</dd>
<dt><a href="mod_authn_file.html">mod_authn_file</a></dt><dd>User authentication using text files</dd>
<dt><a href="mod_authn_socache.html">mod_authn_socache</a></dt><dd>Manages a cache of authentication credentials to relieve
the load on backends</dd>
<dt><a href="mod_authnz_fcgi.html">mod_authnz_fcgi</a></dt><dd>Allows a FastCGI authorizer application to handle Apache
httpd authentication and authorization</dd>
<dt><a href="mod_authnz_ldap.html">mod_authnz_ldap</a></dt><dd>Allows an LDAP directory to be used to store the database
for HTTP Basic authentication.</dd>
<dt><a href="mod_authz_core.html">mod_authz_core</a></dt><dd>Core Authorization</dd>
<dt><a href="mod_authz_dbd.html">mod_authz_dbd</a></dt><dd>Group Authorization and Login using SQL</dd>
<dt><a href="mod_authz_dbm.html">mod_authz_dbm</a></dt><dd>Group authorization using DBM files</dd>
<dt><a href="mod_authz_groupfile.html">mod_authz_groupfile</a></dt><dd>Group authorization using plaintext files</dd>
<dt><a href="mod_authz_host.html">mod_authz_host</a></dt><dd>Group authorizations based on host (name or IP
address)</dd>
<dt><a href="mod_authz_owner.html">mod_authz_owner</a></dt><dd>Authorization based on file ownership</dd>
<dt><a href="mod_authz_user.html">mod_authz_user</a></dt><dd>User Authorization</dd>
<dt><a href="mod_autoindex.html">mod_autoindex</a></dt><dd>Generates directory indexes,
    automatically, similar to the Unix <code>ls</code> command or the
    Win32 <code>dir</code> shell command</dd>
<dt><a href="mod_brotli.html" id="B" name="B">mod_brotli</a></dt><dd>Compress content via Brotli before it is delivered to the
client</dd>
<dt><a href="mod_buffer.html">mod_buffer</a></dt><dd>Support for request buffering</dd>
<dt><a href="mod_cache.html" id="C" name="C">mod_cache</a></dt><dd>RFC 2616 compliant HTTP caching filter.</dd>
<dt><a href="mod_cache_disk.html">mod_cache_disk</a></dt><dd>Disk based storage module for the HTTP caching filter.</dd>
<dt><a href="mod_cache_socache.html">mod_cache_socache</a></dt><dd>Shared object cache (socache) based storage module for the
HTTP caching filter.</dd>
<dt><a href="mod_cern_meta.html">mod_cern_meta</a></dt><dd>CERN httpd metafile semantics</dd>
<dt><a href="mod_cgi.html">mod_cgi</a></dt><dd>Execution of CGI scripts</dd>
<dt><a href="mod_cgid.html">mod_cgid</a></dt><dd>Execution of CGI scripts using an
    external CGI daemon</dd>
<dt><a href="mod_charset_lite.html">mod_charset_lite</a></dt><dd>Specify character set translation or recoding</dd>
<dt><a href="mod_data.html" id="D" name="D">mod_data</a></dt><dd>Convert response body into an RFC2397 data URL</dd>
<dt><a href="mod_dav.html">mod_dav</a></dt><dd>Distributed Authoring and Versioning
(<a href="http://www.webdav.org/">WebDAV</a>) functionality</dd>
<dt><a href="mod_dav_fs.html">mod_dav_fs</a></dt><dd>Filesystem provider for <code class="module"><a href="../mod/mod_dav.html">mod_dav</a></code></dd>
<dt><a href="mod_dav_lock.html">mod_dav_lock</a></dt><dd>Generic locking module for <code class="module"><a href="../mod/mod_dav.html">mod_dav</a></code></dd>
<dt><a href="mod_dbd.html">mod_dbd</a></dt><dd>Manages SQL database connections</dd>
<dt><a href="mod_deflate.html">mod_deflate</a></dt><dd>Compress content before it is delivered to the
client</dd>
<dt><a href="mod_dialup.html">mod_dialup</a></dt><dd>Send static content at a bandwidth rate limit, defined by the various old modem standards</dd>
<dt><a href="mod_dir.html">mod_dir</a></dt><dd>Provides for "trailing slash" redirects and
    serving directory index files</dd>
<dt><a href="mod_dumpio.html">mod_dumpio</a></dt><dd>Dumps all I/O to error log as desired.</dd>
<dt><a href="mod_echo.html" id="E" name="E">mod_echo</a></dt><dd>A simple echo server to illustrate protocol
modules</dd>
<dt><a href="mod_env.html">mod_env</a></dt><dd>Modifies the environment which is passed to CGI scripts and
SSI pages</dd>
<dt><a href="mod_example_hooks.html">mod_example_hooks</a></dt><dd>Illustrates the Apache module API</dd>
<dt><a href="mod_expires.html">mod_expires</a></dt><dd>Generation of <code>Expires</code> and
<code>Cache-Control</code> HTTP headers according to user-specified
criteria</dd>
<dt><a href="mod_ext_filter.html">mod_ext_filter</a></dt><dd>Pass the response body through an external program before
delivery to the client</dd>
<dt><a href="mod_file_cache.html" id="F" name="F">mod_file_cache</a></dt><dd>Caches a static list of files in memory</dd>
<dt><a href="mod_filter.html">mod_filter</a></dt><dd>Context-sensitive smart filter configuration module</dd>
<dt><a href="mod_headers.html" id="H" name="H">mod_headers</a></dt><dd>Customization of HTTP request and response
headers</dd>
<dt><a href="mod_heartbeat.html">mod_heartbeat</a></dt><dd>Sends messages with server status to frontend proxy</dd>
<dt><a href="mod_heartmonitor.html">mod_heartmonitor</a></dt><dd>Centralized monitor for mod_heartbeat origin servers</dd>
<dt><a href="mod_http2.html">mod_http2</a></dt><dd>Support for the HTTP/2 transport layer</dd>
<dt><a href="mod_ident.html" id="I" name="I">mod_ident</a></dt><dd>RFC 1413 ident lookups</dd>
<dt><a href="mod_imagemap.html">mod_imagemap</a></dt><dd>Server-side imagemap processing</dd>
<dt><a href="mod_include.html">mod_include</a></dt><dd>Server-parsed html documents (Server Side Includes)</dd>
<dt><a href="mod_info.html">mod_info</a></dt><dd>Provides a comprehensive overview of the server
configuration</dd>
<dt><a href="mod_isapi.html">mod_isapi</a></dt><dd>ISAPI Extensions within Apache for Windows</dd>
<dt><a href="mod_lbmethod_bybusyness.html" id="L" name="L">mod_lbmethod_bybusyness</a></dt><dd>Pending Request Counting load balancer scheduler algorithm for <code class="module"><a href="../mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code></dd>
<dt><a href="mod_lbmethod_byrequests.html">mod_lbmethod_byrequests</a></dt><dd>Request Counting load balancer scheduler algorithm for <code class="module"><a href="../mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code></dd>
<dt><a href="mod_lbmethod_bytraffic.html">mod_lbmethod_bytraffic</a></dt><dd>Weighted Traffic Counting load balancer scheduler algorithm for <code class="module"><a href="../mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code></dd>
<dt><a href="mod_lbmethod_heartbeat.html">mod_lbmethod_heartbeat</a></dt><dd>Heartbeat Traffic Counting load balancer scheduler algorithm for <code class="module"><a href="../mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code></dd>
<dt><a href="mod_ldap.html">mod_ldap</a></dt><dd>LDAP connection pooling and result caching services for use
by other LDAP modules</dd>
<dt><a href="mod_log_config.html">mod_log_config</a></dt><dd>Logging of the requests made to the server</dd>
<dt><a href="mod_log_debug.html">mod_log_debug</a></dt><dd>Additional configurable debug logging</dd>
<dt><a href="mod_log_forensic.html">mod_log_forensic</a></dt><dd>Forensic Logging of the requests made to the server</dd>
<dt><a href="mod_logio.html">mod_logio</a></dt><dd>Logging of input and output bytes per request</dd>
<dt><a href="mod_lua.html">mod_lua</a></dt><dd>Provides Lua hooks into various portions of the httpd
request processing</dd>
<dt><a href="mod_macro.html" id="M" name="M">mod_macro</a></dt><dd>Provides macros within apache httpd runtime configuration files</dd>
<dt><a href="mod_md.html">mod_md</a></dt><dd>Managing domains across virtual hosts, certificate provisioning 
        via the ACME protocol
    </dd>
<dt><a href="mod_mime.html">mod_mime</a></dt><dd>Associates the requested filename's extensions
    with the file's behavior (handlers and filters)
    and content (mime-type, language, character set and
    encoding)</dd>
<dt><a href="mod_mime_magic.html">mod_mime_magic</a></dt><dd>Determines the MIME type of a file
    by looking at a few bytes of its contents</dd>
<dt><a href="mod_negotiation.html" id="N" name="N">mod_negotiation</a></dt><dd>Provides for <a href="../content-negotiation.html">content negotiation</a></dd>
<dt><a href="mod_nw_ssl.html">mod_nw_ssl</a></dt><dd>Enable SSL encryption for NetWare</dd>
<dt><a href="mod_privileges.html" id="P" name="P">mod_privileges</a></dt><dd>Support for Solaris privileges and for running virtual hosts
under different user IDs.</dd>
<dt><a href="mod_proxy.html">mod_proxy</a></dt><dd>Multi-protocol proxy/gateway server</dd>
<dt><a href="mod_proxy_ajp.html">mod_proxy_ajp</a></dt><dd>AJP support module for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_balancer.html">mod_proxy_balancer</a></dt><dd><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> extension for load balancing </dd>
<dt><a href="mod_proxy_connect.html">mod_proxy_connect</a></dt><dd><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> extension for
<code>CONNECT</code> request handling</dd>
<dt><a href="mod_proxy_express.html">mod_proxy_express</a></dt><dd>Dynamic mass reverse proxy extension for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_fcgi.html">mod_proxy_fcgi</a></dt><dd>FastCGI support module for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_fdpass.html">mod_proxy_fdpass</a></dt><dd>fdpass external process support module for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_ftp.html">mod_proxy_ftp</a></dt><dd>FTP support module for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_hcheck.html">mod_proxy_hcheck</a></dt><dd>Dynamic health check of Balancer members (workers) for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_html.html">mod_proxy_html</a></dt><dd>Rewrite HTML links in to ensure they are addressable
from Clients' networks in a proxy context.</dd>
<dt><a href="mod_proxy_http.html">mod_proxy_http</a></dt><dd>HTTP support module for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_http2.html">mod_proxy_http2</a></dt><dd>HTTP/2 support module for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_scgi.html">mod_proxy_scgi</a></dt><dd>SCGI gateway module for <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_uwsgi.html">mod_proxy_uwsgi</a></dt><dd>UWSGI gateway module for <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_proxy_wstunnel.html">mod_proxy_wstunnel</a></dt><dd>Websockets support module for
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></dd>
<dt><a href="mod_ratelimit.html" id="R" name="R">mod_ratelimit</a></dt><dd>Bandwidth Rate Limiting for Clients</dd>
<dt><a href="mod_reflector.html">mod_reflector</a></dt><dd>Reflect a request body as a response via the output filter stack.</dd>
<dt><a href="mod_remoteip.html">mod_remoteip</a></dt><dd>Replaces the original client IP address for the connection
with the useragent IP address list presented by a proxies or a load balancer
via the request headers.
</dd>
<dt><a href="mod_reqtimeout.html">mod_reqtimeout</a></dt><dd>Set timeout and minimum data rate for receiving requests
</dd>
<dt><a href="mod_request.html">mod_request</a></dt><dd>Filters to handle and make available HTTP request bodies</dd>
<dt><a href="mod_rewrite.html">mod_rewrite</a></dt><dd>Provides a rule-based rewriting engine to rewrite requested
URLs on the fly</dd>
<dt><a href="mod_sed.html" id="S" name="S">mod_sed</a></dt><dd>Filter Input (request) and Output (response) content using <code>sed</code> syntax</dd>
<dt><a href="mod_session.html">mod_session</a></dt><dd>Session support</dd>
<dt><a href="mod_session_cookie.html">mod_session_cookie</a></dt><dd>Cookie based session support</dd>
<dt><a href="mod_session_crypto.html">mod_session_crypto</a></dt><dd>Session encryption support</dd>
<dt><a href="mod_session_dbd.html">mod_session_dbd</a></dt><dd>DBD/SQL based session support</dd>
<dt><a href="mod_setenvif.html">mod_setenvif</a></dt><dd>Allows the setting of environment variables based
on characteristics of the request</dd>
<dt><a href="mod_slotmem_plain.html">mod_slotmem_plain</a></dt><dd>Slot-based shared memory provider.</dd>
<dt><a href="mod_slotmem_shm.html">mod_slotmem_shm</a></dt><dd>Slot-based shared memory provider.</dd>
<dt><a href="mod_so.html">mod_so</a></dt><dd>Loading of executable code and
modules into the server at start-up or restart time</dd>
<dt><a href="mod_socache_dbm.html">mod_socache_dbm</a></dt><dd>DBM based shared object cache provider.</dd>
<dt><a href="mod_socache_dc.html">mod_socache_dc</a></dt><dd>Distcache based shared object cache provider.</dd>
<dt><a href="mod_socache_memcache.html">mod_socache_memcache</a></dt><dd>Memcache based shared object cache provider.</dd>
<dt><a href="mod_socache_shmcb.html">mod_socache_shmcb</a></dt><dd>shmcb based shared object cache provider.</dd>
<dt><a href="mod_speling.html">mod_speling</a></dt><dd>Attempts to correct mistaken URLs by ignoring
capitalization, or attempting to correct various minor
misspellings.</dd>
<dt><a href="mod_ssl.html">mod_ssl</a></dt><dd>Strong cryptography using the Secure Sockets
Layer (SSL) and Transport Layer Security (TLS) protocols</dd>
<dt><a href="mod_status.html">mod_status</a></dt><dd>Provides information on server activity and
performance</dd>
<dt><a href="mod_substitute.html">mod_substitute</a></dt><dd>Perform search and replace operations on response bodies</dd>
<dt><a href="mod_suexec.html">mod_suexec</a></dt><dd>Allows CGI scripts to run as a specified user
and Group</dd>
<dt><a href="mod_unique_id.html" id="U" name="U">mod_unique_id</a></dt><dd>Provides an environment variable with a unique
identifier for each request</dd>
<dt><a href="mod_unixd.html">mod_unixd</a></dt><dd>Basic (required) security for Unix-family platforms.</dd>
<dt><a href="mod_userdir.html">mod_userdir</a></dt><dd>User-specific directories</dd>
<dt><a href="mod_usertrack.html">mod_usertrack</a></dt><dd>
<em>Clickstream</em> logging of user activity on a site
</dd>
<dt><a href="mod_version.html" id="V" name="V">mod_version</a></dt><dd>Version dependent configuration</dd>
<dt><a href="mod_vhost_alias.html">mod_vhost_alias</a></dt><dd>Provides for dynamically configured mass virtual
hosting</dd>
<dt><a href="mod_watchdog.html" id="W" name="W">mod_watchdog</a></dt><dd>provides infrastructure for other modules to periodically run
    tasks</dd>
<dt><a href="mod_xml2enc.html" id="X" name="X">mod_xml2enc</a></dt><dd>Enhanced charset/internationalisation support for libxml2-based
filter modules</dd>
</dl></div></div>
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<p><span>Available Languages: </span><a href="../de/mod/" hreflang="de" rel="alternate" title="Deutsch">&nbsp;de&nbsp;</a> |
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