Today, damaging intrusions can occur in a matter of seconds. Intruders can hide their presence by installing modified versions of dangerous commands in your critical systems and erase their tracks in audit and log files.

Firewalls are regularly under attack by outside intruders. Ports are methodically tested and retested as the intruder probes for weaknesses. Unfortunately, due to incorrect setup or software bugs, weaknesses are often available to be exploited

Is your network safe from Intruders?1