Appendix B Secure Web Server 2.0 Components and Modules
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Table B-1 lists the major components of the Secure Web Server 2.0 kit, along with a URL for more information about each component.
Table B-2 lists the Apache 2.0 source distribution standard modules that are provided with the Secure Web Server 2.0. Modules are either provided built in to the httpd image or as Dynamic Shared Objects.
Table B-3 lists other modules provided with the Secure Web Server 2.0.
Table B-1 Secure Web Server 2.0 Components
| Component | Description | URL |
|---|---|---|
| Apache HTTPD | Apache HTTP Server. | http://www.apache.org |
| fastcgi | A language-independent, scalable, open extension to CGI that provides high performance without the limitations of server-specific APIs. | http://www.fastcgi.com |
| PHP | A server-side, cross-platform HTML embedded scripting language. | http://www.php.net |
Table B-2 Standard Secure Web Server 2.0 DSO Modules
| Module | Description |
|---|---|
| mod_access | Provides access control based on client hostname, IP address, or other characteristics of the client request. |
| mod_actions | Provides for executing CGI scripts based on media type or request method. |
| mod_alias | Provides for mapping different parts of the host file system in the document tree and for URL redirection. |
| mod_asis | Sends files that contain their own HTTP headers . |
| mod_auth | Provides user authentication using text files. |
| mod_auth_anon | Allows “anonymous” user access to authenticated areas. |
| mod_auth_dbm | Provides for user authentication using DBM files. |
| mod_autoindex | Automatically generates directory indexes similar to the UNIX ls command or the Win32 dir shell command . |
| mod_cache | Provides content cache, keyed to URIs. |
| mod_cern_meta | Provides CERN httpd metafile semantics. |
| mod_cgi | Executes CGI scripts. |
| mod_cgid | Executes CGI scripts using an external CGI daemon. |
| mod_charset_lite | Specifies character set translation or recoding. |
| mod_digest | MD5 authentication |
| mod_dav | Provides Distributed Authoring and Versioning (WebDAV) functionality. |
| mod_deflate | Compresses content before it is delivered to the client. |
| mod_dir | Provides for “trailing slash” redirects and for serving directory index files. |
| mod_echo | Provides a simple echo server to illustrate protocol modules. |
| mod_env | Modifies the environment which is passed to CGI scripts and SSI pages. |
| mod_expires | Generates Expires HTTP headers according to user-specified criteria. |
| mod_ext_filter | Passes the response body through an external program before delivery to the client. |
| mod_file_cache | Caches a static list of files in memory. |
| mod_headers | Customizes HTTP request and response headers. |
| mod_imap | Provides server-side imagemap processing. |
| mod_include | Provides for server-parsed HTML documents (Server Side Includes) |
| mod_info | Provides a comprehensive overview of the server configuration. |
| mod_log_config | Logs requests made to the server. |
| mod_logio | Logs input and output bytes per request. |
| mod_mime | Associates the requested filename's extensions with the file's behavior (handlers and filters) and content (mime-type, language, character set and encoding). |
| mod_mime_magic | Determines the MIME type of a file by looking at a few bytes of its contents. |
| mod_negotiation | Provides for content negotiation. |
| mod_proxy | Runs the HTTP/1.1 proxy/gateway server. |
| mod_rewrite | Provides a rule-based rewriting engine to automatically rewrite requested URLs. |
| mod_setenvif | Allows the setting of environment variables based on characteristics of the request. |
| mod_so | Loads executable code and modules into the server at start-up or restart time. |
| mod_speling | Attempts to correct mistaken URLs that users might have entered by ignoring capitalization and by allowing up to one misspelling. |
| mod_ssl | Provides strong cryptography using the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols. |
| mod_status | Provides information on server activity and performance |
| mod_suexec | Allows CGI scripts to run as a specified user and group. |
| mod_unique_id | Provides an environment variable with a unique identifier for each request. |
| mod_userdir | Defines user-specific directories. |
| mod_usertrack | Provides clickstream logging of user activity on a site. |
| mod_vhost_alias | Provides support for dynamically configured mass virtual hosting. |
Table B-3 Secure Web Server 2.0 – Additional Modules
| Module | DSO or Integrated | Description |
|---|---|---|
| mod_fastcgi | DSO | Supports connections to FastCGI processes. |
| mod_php4 | DSO | Provides the PHP processing engine. |
| mod_jk | DSO | Provides an interface to Java Servlet engines. |
| mod_jk2 | DSO | Provides an interface to Java Servlet engines. |