This is what I get (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 127.0.0.1:80 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN - tcp6 0 0 :::22 :::* LISTEN - tcp6 0 0 ::1:631 :::* LISTEN -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-Reverse-Proxy-cannot-open-ports-tp4661107p4661123.html Sent from the Squid - Users mailing list archive at Nabble.com.