I'm trying to find out where a port is being blocked by a firewall; either en-route to a host or by the host itself.
If I run nmap I can see that the port is filtered. However, this could mean by the host 192.168.1.74 or any firewall in between. Is there a way to find out exactly where?
joel@bohr ~ $ nmap -A 192.168.1.74 --traceroute Starting Nmap 5.21 ( http://nmap.org ) at 2011-12-18 20:27 GMT Warning: Traceroute does not support idle or connect scan, disabling... Nmap scan report for android-63731d6ebec9e01.lan (192.168.1.74) Host is up (0.040s latency). Not shown: 999 closed ports PORT STATE SERVICE VERSION 2222/tcp filtered unknown