Conclusion

In the next chapter we cover the installation of Linux applications, and the use of syslog will become increasingly important especially in the troubleshooting of Linux-based firewalls, which can be configured to ignore and then log all undesirable packets; the Apache Web server, which logs all application programming errors generated by some of the popular scripting languages such as PERL and PHP; and finally, Linux mail, whose configuration files are probably the most frequently edited system documents of all and which correspondingly suffer from the most mistakes.

This syslog chapter should make you more confident to learn more about these applications via experimentation because you'll at least know where to look at the first sign of trouble.