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Subject: Re: who uses this port?
To: Andriy Gapon <avg@FreeBSD.org>,
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References: <563A5F39.7010906@FreeBSD.org>
From: Eugene Grosbein <eugen@grosbein.net>
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Date: Thu, 5 Nov 2015 23:51:58 +0700
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On 05.11.2015 02:40, Andriy Gapon wrote:
> $ sockstat -l | fgrep 631
> ?        ?          ?     ?  tcp4   127.0.0.1:631         *:*
> 
> $ nc -l 127.0.0.1 631
> nc: Address already in use

That may be nlockmgr, as for my system:

# sockstat -4lP tcp | fgrep \?            
?        ?          ?     ?  tcp4   *:698                 *:*

# rpcinfo -p | grep 698
    100021    0   tcp    698  nlockmgr
    100021    1   tcp    698  nlockmgr
    100021    3   tcp    698  nlockmgr
    100021    4   tcp    698  nlockmgr