Difference between application level firewall and stateful firewall

Question

Accepted Answer

Application level firewall filters traffic based on application layer protocols while stateful firewall filters based on connection state.

Application level firewall operates at layer 7 of OSI model while stateful firewall operates at layer 4.
Application level firewall can block specific applications while stateful firewall cannot.
Stateful firewall keeps track of connection state while application level firewall does not.
Examples of application level firewall include proxy servers and web application firewalls while examples of stateful firewall include Cisco ASA and Check Point Firewall.

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