samba - Feb 1998 - UDP socket being listened on.

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 

# netstat -a -u 

Active Internet connections (including servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
udp        0      0 localhost:1799          *:*  

Regards

Rudi

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Rudi Heitbaum                Ph:  +61-3-9822 1216
Managing Director            Fax: +61-3-9822 1728 
DARX Consulting Pty Ltd      http://www.darx.com.au/
mailto:rudi@darx.com.au      http://www.vsg.edu.au/

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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