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18
Auditing and Logging
18.1 Chapter objectives
■ Detecting intruders
■ Auditing your firewall setup
■ Interpreting log output
■ Configuring firewall logging and alert mechanisms
■ Logging and monitoring firewalls
You’ve just finished implementing your new shiny firewall, or perhaps
you’ve just inherited several new firewalls with the company merger.
Either way, you’re probably curious about whether they are imple-
mented properly. Will your firewalls keep the hackers out there at bay?
Do they meet your expectations? This chapter will help you find out.
Here you will find recommendations on how to audit your firewall and
set up your firewall log activities ...