What is a Proxy Firewall? - Definition from WhatIs.com

Proxy firewalls filter traffic at the application layer, providing more security than traditional firewalls. Find out the pros and cons of using them.
A proxy firewall is a network security system that protects network resources by filtering messages at the application layer.

What Is a Firewall? Definition, Key Components, and Best Practices

WAF vs. Firewall: Web Application & Network Firewalls

Network Firewall vs Network Switch vs Network Router

Firewalls: Application Proxy Firewall

Packet Filter Firewall and Application Level Gateway - GeeksforGeeks

What is Firewall? Definition, Meaning, Examples

What Is a Firewall? Definition and Types of Firewall

Perimeter Firewall: What Is It and How Does It Work?

Proxy server - Wikipedia

What is a firewall? Firewalls explained and why you need one – Norton

What is a Firewall? Firewall Definition - Palo Alto Networks

What is stateful inspection in networking?