[Cialug] Port Forwarding

[Paul Gray]

On 10/25/2013 02:12 PM, L. V. Lammert wrote:
> Ran into an interesting problem today, .. on BSD and CentOS 5.4, when a
> reverse SSH tunnel is setup it binds to all IPs on the host:
> 
> tcp          0      0  *.2210         *.*   LISTEN
> tcp6         0      0  *.2210         *.*   LISTEN
> 
> With a more modern Linux, the *SAME* command binds to 127.0.0.1 ONLY:
> 
> tcp        0      0 127.0.0.1:2205          0.0.0.0:*               LISTEN
> tcp        0      0 ::1:2205                :::*                    LISTEN
> 
> What must be done on a modern Linux kernel so that incoming connections
> can also use the port? Can't figure out how to Duck for the problem, ..

Knowing the command would be helpful, but it looks like you omitted the
bind interface parameter, so Linux defaults to loopback binding only.


-- 
Paul Gray                                         -o)
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University of Northern Iowa                      _\_V
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