[c-nsp] Unknown connection on 3750

[Tassos Chatzithomaoglou]

"sh tcp" should show more details about these connections.
Could they be some "internal" connections used by cisco for stacking?

--
Tassos

Sergey Velikanov [Intelsoft] wrote on 10/6/2006 12:06 μμ:
> Hi
> 
> I've got two 3750 in stack. And suddenly I've discovered unknown tcp connection on this switch
> 
> #sh tcp brief
> TCB       Local Address           Foreign Address        (state)
> 03AECA48  cat.ip.add.ress.22      192.168.10.83.49944    ESTAB   <-- this is connection of mine
> 03AB67D8  127.0.0.20.23           127.0.0.3.11001        ESTAB
> 03CC2648  127.0.0.20.23           127.0.0.3.11000        ESTAB
> 
> could anybody explain whois connected to 127.0.0.20 ?
> 
> I've tryed to connect to 127.0.0.20 with telnet command, but no luck.
> 
> PS: How can I listen all open ports on cisco?, smth like netstat -nlp in linux
> 
> # netstat -nlp
> Active Internet connections (only servers)
> Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
> tcp        0      0 0.0.0.0:3306            0.0.0.0:*               LISTEN      1848/mysqld
> tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      23250/httpd
> tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN      1065/proftpd
> tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1021/sshd
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