Computer Firewall Question:
Explain Can traceout command work across the firewall? If No then why? If Yes then why?

Answers:
Answer #1Traceroute is based on ICMP type 30 under Windows and UDP under *NIX; traceroute pacjets that would hit the firewall should be dropped similarly any echo replay coming from inside the firewall should be restricted outbound. The answer: traceroute can ...
Answer #2In traceroute, the outgoing traffic is not same as the incoming traffic, since, atleast in UNIX system,outgoing is UDP packets and incoming is ICMP, so a stateful firewall would fail to inspect this kind of packet movement.