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Date:      Tue, 23 May 2000 19:04:35 -0500
From:      Oscar Ricardo Silva <oscars@mail.utexas.edu>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Port 722 ?
Message-ID:  <4.2.2.20000523190214.00a976c0@mail.utexas.edu>
In-Reply-To: <20000523193534.A57347@ecto.greenpeas.org>
References:  <Pine.BSF.4.21.0005231624110.29966-100000@web2.sea.nwserv.com> <4.2.2.20000523180523.00a8f680@mail.utexas.edu> <Pine.BSF.4.21.0005231624110.29966-100000@web2.sea.nwserv.com>

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Thanks to Dave Kirchner and Alan Clegg for the incredibly fast and 
completely useful responses.  Using both methods, I found out this:

amanda# /usr/local/sbin/lsof -i TCP:722
COMMAND PID USER   FD   TYPE     DEVICE SIZE/OFF NODE NAME
sshd1   143 root    3u  IPv6 0xcb8e7940      0t0  TCP *:722
sshd1   143 root    5u  IPv4 0xcb8e7720      0t0  TCP *:722 (LISTEN)

Now the question is, where the hell did this come from?  I hadn't seen this 
before and I thought I'd checked my machine.


Oscar

At 07:35 PM 5/23/00 -0400, Alan Clegg, you wrote:
>Out of the ether, David Kirchner spewed forth the following bitstream:
>
> > An easy way to find out what an unknown port is:
> >
> > First run 'netstat -aAn | grep LISTEN | grep \.portnum'. The -A flag will
> > display the address for the socket. You can then figure out which process
> > is using that address by running 'fstat | grep address':
> >
> > dpk@web2:/home/dpk$ netstat -aAn | grep LISTEN | grep \.25
> > c6400180 tcp        0      0 *.25                  *.*   LISTEN
> > dpk@web2:/home/dpk$ fstat | grep c6400180
> > root     sendmail   94903    4* internet stream tcp c6400180
>
>Easier way:
>
>         lsof -i TCP:_portnum_
>
>ecto 101} /usr/local/sbin/lsof -i TCP:25
>COMMAND   PID   USER   FD   TYPE     DEVICE SIZE/OFF NODE NAME
>tcpserver 381 qmaild    3u  IPv4 0xc735c500      0t0  TCP *:smtp (LISTEN)
>
>lsof from ports, btw...
>
>AlanC
>--
>                                       \             Alan B. Clegg
>          Just because I can            \          abc@firehouse.net
>         does not mean I will.           \     <http://www.firehouse.net/>;
>                                          \




"Don't believe the hype"



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