Firewalls

automated process. Naturally, what constitutes an anomaly will

change over time, but only if you document it.

Continued health prescription

No checkup uncovers all problems, so it’s important to verify your

firewall’s health continuously. Run a packet scanner to ensure it has

the correct configuration. If you want to be a bit more aggressive,

run a vulnerability scanner.

Security is all about paranoia, and a daily firewall checkup may

be just what the doctor ordered. By checking the preceding six indi-

cators daily, you’ll keep your firewall alive and kicking.

Now, let’s look at how to report and manage incidents for firewalls.

This chapter also looks ...