Re: Coaching to ssh port forward an NNTP connection

["Herbert J. Skuhra" <hskuhra@eumx.net>]

On Tue, 27 Aug 2013 12:57:35 -0400
Harry Putnam wrote:

> Abramov Aleksey <levenson@mmer.org> writes:
> 
> 
> [...]
> 
> >> Trouble is I cannot remember the first thing about how it was done or
> >> find any notes I may have kept... this has been 10 or more yrs ago.
> >>
> >> Can anyone give an outline of how something like that might be done?
> >>
> >
> > To create an ssh tunnel is pretty easy. 
> >
> > # ssh -ANf -L5119:news.gmane.org:119 router.example.com
> >
> > # telnet localhost 5119
> > Trying 127.0.0.1...
> > Connected to localhost.
> > Escape character is '^]'.
> > 200 news.gmane.org InterNetNews NNRP server INN 2.5.1 ready (posting ok)
> > Connection closed by foreign host.
> >
> > There could be only one problem, TCP forwarding shouldn't be disabled in
> > sshd which you are connecting to. 
> >
> > In my case the interesting thing is that, there is a http proxy before
> > router. =) 
> 
> In the command line you show above, what role does router.example.com
> play? Are -L and router.example.com the same host 

% man ssh

Have you tried?

> Do any of the participating hosts require root to do that?

Yes, e.g: if you try to listen to a privileged port.

-- 
Herbert