FreeBSD® Unleashed

Introduction to Apache Modules

One of Apache's greatest strengths is its modular structure. All configuration directives are part of one module or another, and while in earlier versions of Apache these modules were all painstakingly turned on or off at compile time, nowadays almost all modules are available as dynamic shared objects (DSOs) and can simply be loaded at runtime.

Built-in Modules

To see which modules are compiled statically into Apache, use httpd -l:

# httpd -l
Compiled-in modules:
  http_core.c
  mod_so.c
suexec: disabled; invalid wrapper /usr/local/sbin/suexec

This means that the directives in the Core module and the mod_so module are the only ones guaranteed to be available. The Core module provides access to the most fundamental ...