This module, intended for use with the Apache HTTP server, is based on the module mod_access and is distributed under the same copyright
An Apache 1.3.x module based on mod_access that supports denying or allowing access to pages on a site by way of DNSbl queries.
mod_access_referer provides access control based on "Referer" HTTP header content. It allowd or denies the access based on what page is shown in the Web browser, which means that if you publish a document on your site, the people will have to visit your Web site to access it, and no one will be able to link just the document.
Mod_Auth_OpenPGP is an Apache module that implements access authorization to servers, vhosts, or directories when incoming requests' HTTP OpenPGP signatures are valid and known by the local keyring.
Mod_Authz_Unixgroup is a unix group access control modules for Apache 2.1 and later. If you are having users authenticate with real Unix login ID over the net, using something like my mod_authnz_external / pwauth combination, and you want to do access control based on unix group membership, then mod_authz_unixgroup is exactly what you need.
This module enables the web server to take on the access rights of a user & group, so that ~users can make available files to the web without having to make them readable by the world on the local file system. This can be useful for sites with a large number of users who want to apply file access controls among themselves. This module can also be applied to virtual hosts, directories, and locations.
mod_chroot makes running Apache in a secure chroot environment easy. You don't need to create a special directory hierarchy containing /dev, /lib, /etc.
mod_dav_fs_diskquota is a derived work of mod_dav_fs in Apache 2.0. When it stores files or directories, it changes their owner to the OS user account that has same name as the Web-authorized user, so OS disk quota can continue to work for WebDAV contents.
mod_diffprivs makes Apache configurable to work as diffrent user, group and different chroot() environment for each VirtualServer and for ~user request. Designed mostly for ISP to make Apache secure.
mod_ldap_userdir is a module that enables the Apache web server to look up user home directories (for /~user URLs) from an LDAP directory.
mod_listaccess is an extended access-module (stores acls in shared mem).
mod_mysql_userdir is a module for the Apache Web server that performs UserDir lookups using a MySQL database. The module currently supports both Apache 1.3.xx and Apache 2.xx.
mod_myuserdir is an Apache 1.3.xx module for dynamically configured mass userdirs, with all configurations are stored in MySQL database.
mod_myuserdir is an Apache 1.3.xx module for dynamically configured mass userdirs, with
all configurations are stored in a PostgreSQL database.
mod_ruid is based on mod_suid2.
mod_suexec_helper adds UserId and GroupId directives to apache, which are passed as arguments to suexec when starting CGI scripts. This allows much finer control of which user and group ID scripts get run as, compared to suexec's normal SuexecUserGroup directive that can only be used once per virtual host definition.
mod_suffix grants access to files on the webserver based on their suffix. It will only allow files to be seen if their suffix is explicitely listed in the module's configuration. Attempts to get other files will either be blocked by sending a 403 (FORBIDDEN) status code or redirected to another page.
mod_suid gives the administrator the choice of running scripts inside and outside vhosts under their own UID and GID.
This module is intended to verify ownership and permissions of directories and files within a web site's hierarchy without having to use setuid() and setgid(), ie. no root privileges needed.
Privilege Separation for Apache
The Privilege Separation patches for Apache HTTPD and 'mod_dav' address the problem that an Apache WebDAV server can only write files as the non-privileged Web server user (usually something like 'nobody' or 'www').
suPHP is a tool for executing PHP scripts with the permissions of their owners. It consists of an Apache module (mod_suphp) and a setuid root binary (suphp) that is called by the Apache module to change the uid of the process executing the PHP interpreter.