Firewalls are generally categorized by the "layer" of the OSI model they operate on and the depth of their inspection:
The effectiveness of a firewall depends less on the software itself and more on the policy design and maintenance. Key strategies include: Firewall2.rar
: Enforcing a "default-deny" stance where all traffic is blocked unless explicitly permitted. Firewalls are generally categorized by the "layer" of
: Before deployment, organizations must clearly define security requirements to align the firewall's rules with business needs. Firewall2.rar