איזה סוג מידע Firewalk בעיקר אוסף?

Firewalk (L4 determination) An active reconnaissance network security tool that attempts to determine what layer 4 protocols a given IP forwarding device will pass (TCP/UDP) Firewalk works by sending out TCP or UDP packets with a TTL one greater than the targeted gateway ▪ If the gateway allows the traffic, it will forward the packets to the next hop where they will expire and elicit an ICMP_TIME_EXCEEDED message. Else, it will likely drop the packets.