Bruce Marshall bmarsh at
Fri Dec 19 18:14:09 UTC 2008

On Friday 19 December 2008, alan c wrote:
> At home with a vigor router, it worked ok. Relief. However, on
> location (a long way away!) when setting up the gifted machine (ssh
> server machine) the tests did not work. Two days spent, wasted, with
> lots of tests and research. I now find that quite a few routers do not
> allow such (test) connections using a full internet IP address to a
> machine located within its LAN. I finally had to use an independent
> internet connection (via a mobile phone in fact) for final tests,
> before I travelled back home.

Most routers will allow you to set this up.

You will ssh to the address of the router on a specific port (I wouldn't use 
22, use something like 12000+

The router will see the incoming on that port and pass the incoming off to any 
machine you choose.  In this case,  only the one machine but you still need 
to specify it.  On a multimachine network, you can pass the ssh to one 
machine and then ssh to others if need be.

You might also want to set up a domain name with dyndns (free) so you can 
always find her machine.  You can probably tell the router to handle the 
dyndns too.  Most routers will do that.

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