UDP socket being listened on.

Jeremy Allison jallison at whistle.com
Wed Feb 18 19:38:38 GMT 1998


Rudi Heitbaum wrote:
> 
> I have a UDP socket listening on my machine, here is the lsof/netstat
> output. I was just wondering if anyone knows why this UDP socket is
> listening.
> 
> # lsof -i UDP
> 
> COMMAND   PID USER   FD   TYPE     DEVICE SIZE/OFF INODE NAME
> smbd    18820 root    4u  inet 0x03a88018      0t0   UDP localhost:1799
> 

Rudi,

	This is the oplock break socket. smbd uses it
to do IPC between smbd processes to tell each other 
to break oplocks. It is bound to the localhost address
and so should not be accessible over the network.

Hope this helps,

	Jeremy Allison,
	Samba Team.

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