Which type of firewall is commonly part of a router firewall and allows or blocks traffic based on Layer 3 and Layer 4 information?
- stateless firewall
- stateful firewall
- proxy firewall
- application gateway firewall
Explanation: A stateless firewall uses a simple policy table look-up that filters traffic based on specific criteria. These firewalls are usually part of a router firewall. They permit or deny traffic based on Layer 3 and Layer 4 information.
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