[ILUG] ssh and esat broadband
daveb at esat.net
Wed Sep 1 09:21:21 IST 2004
Paul Barron wrote:
>I not sure if this has been asked, but I was unable to find it in the
>archives. I have esat bb at home and want to be able to ssh into my
>machine from home. From what I can see from the way esat do there
>broadband this is not possible as the modem/router has the routable IP
>while all devices behind it use non-routable ip's. Is there a way a
>person can get around this.
[ for the sake of this discussion, i'll presume you mean IOLBB ]
There's ways around everything :)
IOLBB uses dyanamic IP addresses, so everytime you log back in, you get a
different IP address (and don't presume just because you don't switch off your
machine that your IP won't change).
So, the first thing to do is get yourself one of those dynamic DNS services,
so at least you'll always have a consistent hostname to log back to.
The next step depends on how you have the ZyXel setup. At the moment, I think
it's the ZyXel-623 that is shipped out. You can eitherr have that in bridging
mode , plug it in via a crossover ethernet cable into a spare ethernet card on
your PC and run pppoe on your machine, or else run it in routing mode.
If you terminate the pppoe session on your linux machine, setting up iptables
to port forward the ssh session to a machine on your internal lan is trivial.
If you have the ZyXel in routing mode, then the ZyXel supports port forwarding
IIRC. Just telnet to 192.168.1.1, login and it's in the menus there, as is a
host of other features for playing around with routing etc.
>I have the zyxel modem/router that comes standard with esat broadband.
> Paul mailto:paul at carrot.co.za
>Irish Linux Users' Group
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