Re: [Sheflug] PPP Trouble - is gated the solution?

[José Luis Gómez Dans <nospam [at] sheffield.ac.uk>]

On Fri, Jan 26, 2001 at 01:45:44PM +0000, James Wallbank wrote:
> Hi again all,
> 
> Second question in one day!
> 
> 3 networks - lo eth0 and ppp0. The only trouble is, I can't seem to 
> get any other connection to the outside world. If I try to ping the 
> IP number of my provider's DNS server (I like to try something I know 
> is there) then I get no contact.

	Have you got IP-Masquerading set up? You will need that to be
working. Since I only have one computer, I haven't looked into it much
(only for a local net in the lab, which never materialised), but I
remember the IP-Masquerading HOWTO was the source of information I used.

> I had though that DNS was the issue, and I'd have to try running 
> "bind" at my end - but obviously you don't need to resolve an IP 
> number - so it's genuinely the case that my pings aren't getting 
> though and DNS isn't the issue.

	You don't need bind in your end (if you don't want to, that
is!). The problem arises from the fact that there is only one IP address
to be used (the PPP ip address). The gateway then translates packets
from the local network so as to make them appear to be originating from
the gateway machine.
> In which case, what do I do to route the packets where I want them to 
> go? Do I run routed or gated - or is there a simply a config file I 
> can edit? (I'm running Debian 2.2 release 2, if that's any help).

	You probably need a kernel recompilation (I think debian's
standard kernel doesn't have IP-Masq enabled). As said before, the HOWTO
is quite good, so give that one a shot, and tell us how you're getting
on :-)

	José
-- 
José L Gómez Dans			PhD student
Tel: +44 114 222 5582			Radar & Communications Group
FAX; +44 870 132 2990			Department of Electronic Engineering
					University of Sheffield UK
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