Watch Ethical Hacking: Evading Ids, Firewalls, And Honeypots ((hot))
To understand evasion, you must first understand the systems you are trying to bypass: Evading IDS, Firewalls and Honeypots - EC-Council iLabs
Understanding evasion techniques is critical for defenders. If you do not know how your defenses can be bypassed, you cannot effectively harden them. watch ethical hacking: evading ids, firewalls, and honeypots