4/3/2023 0 Comments Circuit level proxy firewall![]() ![]() □️ Protocols that implement this FW: DNS, UDP, HTTP Uses data packet's source, destination etc to find if the #data presents threat or not, uses ACL, doesn't look what's inside the packet (doesn't remember anything, so less memory & is faster) □ #aws Network Firewall (stateless + stateful) (Hardware/Software) □ #fortinet's Fortigate NGFW (Software/Hardware) □Palo Alto Networks Firewall (Software/Hardware) ![]() □ #windows Defender Firewall ( #software) □️ #Protocol that implement this FW: TCP Often a software Packet #filtering firewall acts like #stateful. Uses Stateful inspection #technology, inspects inside packets, examines+catalogs patterns of its behavior, remembers this behaviour for future, so needs more memory 2.2 Circuit-level gateway Firewall/Proxy Serversĭepending on how vendors deliver their #firewall, firewalls can be of 3 types: ![]()
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