Weird Port scanning results using nmap

view story

http://serverfault.com – I was scanning one of my friends servers using nmap and got these port details. PORT STATE SERVICE 22/tcp open ssh 42/tcp filtered nameserver 80/tcp open http 111/tcp open rpcbind 135/tcp filtered msrpc 139/tcp filtered netbios-ssn 161/tcp filtered snmp 179/tcp filtered bgp 443/tcp open https 1028/tcp filtered unknown 1080/tcp filtered socks 3128/tcp filtered squid-http 6666/tcp filtered irc 6667/tcp filtered irc 6668/tcp filtered irc 7402/tcp open unknown 10082/tcp open amandaidx And when I logged into the machine using SSh and (HowTos)