Santos:CCNA Sec 210-260 OCG

Objectives of a Good Firewall

Here are some common properties that a good firewall should possess:

It must be resistant to attacks: If a firewall can be brought down or compromised to the point where it allows unwanted access, it thus fails to implement policy correctly. If the firewall is a victim of a denial-of-service (DoS) attack, to the point where it cannot provide normal access for users, that is also problem. If there is some vulnerability that an attacker can leverage with an exploit, thus enabling the attacker to modify the firewall ...