Because Red Hat Linux can provide so many different kinds of services (serving Web pages, printers, files, and other resources), it's easy to lose track of them. Let's say you install all server software packages with Red Hat Linux. How do you know which servers will start up automatically and which will need special configuration to work? Where do you start to look for configuration files, start-up scripts, and daemon processes? How do you know if your firewall configuration is blocking access to the services?
This appendix provides a quick reference to the network services that come with Red Hat Linux. It offers an overview of the services described in detail in other chapters. You can use this appendix to help you remember how to get services working or as a guide to help you debug a service that needs some fixing.
Any services your computer offers to users who can reach it over a network pose a potential security threat. Refer to Chapter 14 for information on security, as well as the sections in the book that describe configuration of each feature in detail.