Re: OT: port forwarding with ssh

[Tom Rivers]

On 3/23/2016 3:10 PM, Mike Wright wrote:
>  usage: ssh -L [bind_address:]port:host:hostport]
>
>  Here's what I'm trying:
>
>  sudo ssh -L lo.cal.ip.adx:11110:rem.ote.ip.adx:110 

I successfully use the following to tunnel VNC over SSH so I can 
securely connect to a remote server at a hosting facility using VNC:

ssh -f -L 25901:127.0.0.1:5901 user@remotehost sleep 10; vncviewer 
127.0.0.1:25901:1

If I had to adapt it to your example, I would try this:

ssh -f -L 11110:127.0.0.1:110 user@remotehost sleep 10; <whatever 
command you need to use to get your email>

The "-f" makes ssh act in the background and the "sleep 10" gives the

ssh tunnel 10 seconds to actually connect before it bails.  The next 
statement should execute whatever process you need to execute but note 
that you want to execute it against the local host's loopback address, 
not the remote system's address.  You actually target the remote 
system's IP address using the "user@remotehost" section.


Tom