netstat is a tool for viewing active network connections, listeners and sockets.

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14
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5answers
69k views

Huge amount of TIME_WAIT connections says netstat

Okay, this is creeping me out - I see about 1500-2500 of these: root@wherever:# netstat Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 ...
7
votes
3answers
2k views

Semantics of :: and 0.0.0.0 in dual-stack OSes

Back in the IPv4-only days, a LISTEN connection showing in netstat as listening on 0.0.0.0 would respond to connections on any IPv4 interface in the system. As I understand it, the new IPv6 idiom :: ...
1
vote
2answers
2k views

How to find the other point of a Unix domain socket on Mac OS X to write/read it?

I listed open file for a process (a daemon) on my box which runs Mac OS X 10.5 : >lsof -p 89 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME ... xxxxx 89 xxxxxxxx 9u unix ...
10
votes
8answers
34k views

How do I get rid of sockets in FIN_WAIT1 state?

I have a port that is blocked by a process I needed to kill. (a little telnet daemon that crashed). The process was killed successfully but the port is still in a 'FIN_WAIT1' state. It doesn't come ...