Fastweb, o il TCP reinterpretato

Dall’interno della loro rete tra le 2100 e le 2200 di stasera, a tratti:

Connessione ad una porta chiusa:

beepbeep:~ zen$ telnet host 1
Trying ip…
Connected to host.
Escape character is ‘^]’.
telnet> quit
Connection closed.

Connessione ad una porta sicuramente aperta, ma non http:

beepbeep:~ zen$ telnet host porta
Trying host…
Connected to host.
Escape character is ‘^]’.
Connection closed by foreign host.

Connessione ad una porta a cui risponde un httpd:

beepbeep:~ zen$ telnet www.kill-9.it 80
Trying 88.149.151.30…
Connected to calvin.kill-9.it.
Escape character is ‘^]’.
GET / HTTP/1.0
[enter]
wait… wait… wait…

Divertente.
Ok, adesso che rifunziona tutto, faccio l’upgrade alla 2.1.

Author: zen

Geek of all trades, having fun with *NIX, the Internet and computer security since 1995. View all posts by zen