Maintains a cache of authentication credentials, so that a new backend lookup is not required for every authenticated request

Other “apache2_modules” USE_EXPAND flag values

Use Flag Description
apache2_modules_remoteip 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
apache2_modules_lua Provides Lua hooks into various portions of the httpd request processing
apache2_modules_proxy_html Module to rewrite links in html pages behind a reverse proxy
apache2_modules_userdir User-specific directories
apache2_modules_socache_shmcb A shared object cache provider using a high-performance cyclic buffer inside a shared memory segment
apache2_modules_setenvif Allows the setting of environment variables based on characteristics of the request
apache2_modules_session_dbd Provides support for the storage of user sessions within a SQL database using the mod_dbd module
apache2_modules_proxy_scgi SCGI gateway module for mod_proxy
apache2_modules_unique_id Provides an environment variable with a unique identifier for each request
apache2_modules_expires Generation of Expires and Cache-Control HTTP headers according to user-specified criteria
apache2_modules_ext_filter Pass the response body through an external program before delivery to the client
apache2_modules_negotiation Provides for content negotiation
apache2_modules_log_config Logging of the requests made to the server
apache2_modules_headers Customization of HTTP request and response headers
apache2_modules_cern_meta CERN httpd metafile semantics
apache2_modules_access_compat Group authorizations based on host (name or IP address). Available as a compatibility module with previous versions
apache2_modules_authz_host Group authorizations based on host (name or IP address)
apache2_modules_info Provides a comprehensive overview of the server configuration
apache2_modules_lbmethod_bytraffic Weighted Traffic Counting load balancer scheduler algorithm for mod_proxy_balancer
apache2_modules_proxy_ajp AJP support module for mod_proxy
apache2_modules_proxy_wstunnel Provides support for the tunnelling of web socket connections to a backend websockets server
apache2_modules_actions Provides for executing CGI scripts based on media type or request method
apache2_modules_dir Provides for "trailing slash" redirects and serving directory index files
apache2_modules_version Version dependent configuration
apache2_modules_charset_lite Specify character set translation or recoding
apache2_modules_alias Provides for mapping different parts of the host filesystem in the document tree and for URL redirection
apache2_modules_dav_fs filesystem provider for mod_dav
apache2_modules_authn_anon Allows "anonymous" user access to authenticated areas
apache2_modules_socache_memcache A shared object cache provider using memcached
apache2_modules_cache_disk Disk based storage module for the HTTP caching filter (similar to mem_cache in previous versions)
apache2_modules_authn_socache Maintains a cache of authentication credentials, so that a new backend lookup is not required for every authenticated request
apache2_modules_authn_dbm User authentication using DBM files
apache2_modules_usertrack Clickstream logging of user activity on a site
apache2_modules_authn_file User authentication using text files
apache2_modules_authz_dbd Provides authorization capabilities via SQL database so that authenticated users can be allowed or denied access to portions of the web site by group membership
apache2_modules_authz_owner Authorization based on file ownership
apache2_modules_dav Distributed Authoring and Versioning (WebDAV) functionality
apache2_modules_env Modifies the environment which is passed to CGI scripts and SSI pages
apache2_modules_authz_user User Authorization
apache2_modules_proxy_balancer mod_proxy extension for load balancing
apache2_modules_brotli Enable brotli compression support
apache2_modules_authn_core Provides core authentication capabilities common to all authentication providers (functionality provided by authn_alias in previous versions)
apache2_modules_logio Logging of input and output bytes per request
apache2_modules_ratelimit Bandwidth Rate Limiting for Clients
apache2_modules_unixd Basic (required) security for Unix-family platforms
apache2_modules_proxy_http2 HTTP2 support module for mod_proxy
apache2_modules_lbmethod_bybusyness Pending Request Counting load balancer scheduler algorithm for mod_proxy_balancer
apache2_modules_allowmethods This module makes it easy to restrict what HTTP methods can be used on a server
apache2_modules_include Server-parsed html documents (Server Side Includes)
apache2_modules_proxy_fcgi FastCGI support module for mod_proxy
apache2_modules_ident RFC 1413 ident lookups
apache2_modules_session_crypto Provides support for the encryption of user sessions before being written to a local database, or written to a remote browser via an HTTP cookie
apache2_modules_tls mod_tls TLS module for Apache, intended to replace mod_ssl
apache2_modules_imagemap Server-side imagemap processing
apache2_modules_lbmethod_byrequests Request Counting load balancer scheduler algorithm for mod_proxy_balancer
apache2_modules_slotmem_shm Slot-based shared memory provider
apache2_modules_file_cache Caches a static list of files in memory
apache2_modules_proxy_hcheck Dynamic health check of Balancer members (workers) for mod_proxy
apache2_modules_authn_dbd User authentication using an SQL database
apache2_modules_asis Sends files that contain their own HTTP headers
apache2_modules_cache Content cache keyed to URIs
apache2_modules_auth_basic Basic authentication
apache2_modules_cgi Enable CGI module (used by non-multithreaded MPMs, for eg. prefork)
apache2_modules_proxy_http HTTP support module for mod_proxy
apache2_modules_cgid Enable CGI module (used by multithreaded MPMs, for eg. worker)
apache2_modules_watchdog Provides infrastructure for other modules to periodically run tasks
apache2_modules_rewrite Provides a rule-based rewriting engine to rewrite requested URLs on the fly
apache2_modules_proxy_connect mod_proxy extension for CONNECT request handling
apache2_modules_proxy HTTP/1.1 proxy/gateway server
apache2_modules_dumpio Dumps all I/O to error log as desired
apache2_modules_filter Context-sensitive smart filter configuration module
apache2_modules_log_forensic Forensic Logging of the requests made to the server
apache2_modules_reqtimeout Set timeout and minimum data rate for receiving requests
apache2_modules_mime_magic Determines the MIME type of a file by looking at a few bytes of its contents
apache2_modules_status Provides information on server activity and performance
apache2_modules_http2 Enable http2/alpn module
apache2_modules_cache_socache Shared object cache (socache) based storage module for the HTTP caching filter
apache2_modules_autoindex Generates directory indexes, automatically, similar to the Unix ls command
apache2_modules_lbmethod_heartbeat Heartbeat Traffic Counting load balancer scheduler algorithm for mod_proxy_balancer
apache2_modules_authz_groupfile Group authorization using plaintext files
apache2_modules_mime Associates the requested filename's extensions with the file's behavior (handlers and filters) and content (mime-type, language, character set and encoding)
apache2_modules_auth_digest User authentication using MD5 Digest Authentication
apache2_modules_speling Attempts to correct mistaken URLs that users might have entered by ignoring capitalization and by allowing up to one misspelling
apache2_modules_authz_core Provides core authorization capabilities to various authorization/authorization modules, such as authn_file and authz_user
apache2_modules_deflate Compress content before it is delivered to the client
apache2_modules_authz_dbm Group authorization using DBM files
apache2_modules_md Managing domains across virtual hosts, certificate provisioning via the ACME protocol
apache2_modules_dav_lock generic locking module for mod_dav
apache2_modules_dbd Manages SQL database connections
apache2_modules_proxy_uwsgi UWSGI gateway module for mod_proxy
apache2_modules_proxy_ftp FTP support module for mod_proxy
apache2_modules_xml2enc Enable xml2 encoding module
apache2_modules_auth_form Allows the use of an HTML login form to restrict access by looking up users in the given providers
apache2_modules_macro Macros for the Apache config file
apache2_modules_substitute Perform search and replace operations on response bodies
apache2_modules_session Provides support for a server wide per user session interface
apache2_modules_session_cookie Provides support for the storage of user sessions on the remote browser within HTTP cookies
apache2_modules_vhost_alias Provides for dynamically configured mass virtual hosting

All packages providing a “apache2_modules_authn_socache” USE flag (1)