Uma boa verificação nmap mostra que a porta 557 está fechada em servidores checkmytorrentip.com:
sudo nmap -p 557 -sU -P0 www.checkmytorrentip.com
[sudo] password for braiam:
Starting Nmap 6.40 ( http://nmap.org ) at 2013-08-14 18:21 AST
Nmap scan report for www.checkmytorrentip.com (199.231.232.176)
Host is up (0.17s latency).
PORT STATE SERVICE
557/udp closed openvms-sysipc
Ou seja, não importa o que você faça, permanecerá assim . Nas varreduras profundas, mostra que nenhuma das portas do udp está aberta:
sudo nmap -sU -P0 www.checkmytorrentip.com
Starting Nmap 6.40 ( http://nmap.org ) at 2013-08-14 18:22 AST
Nmap scan report for www.checkmytorrentip.com (199.231.232.176)
Host is up (0.12s latency).
Not shown: 998 open|filtered ports
PORT STATE SERVICE
53/udp closed domain
5002/udp closed rfe
Se você quiser testar algo, recomendo que use tracker.publicbt.com:80
ou tracker.openbittorrent.com:80
:
sudo nmap -p 80 -sU -P0 tracker.publicbt.com
[sudo] password for braiam:
Starting Nmap 6.40 ( http://nmap.org ) at 2013-08-14 18:24 AST
Nmap scan report for tracker.publicbt.com (31.172.124.2)
Host is up.
Other addresses for tracker.publicbt.com (not scanned): 31.172.124.3
rDNS record for 31.172.124.2: tracker.openbittorrent.com
PORT STATE SERVICE
80/udp open|filtered http