[SLUG] Routing across ethernet and ppp?

["Jason Lowe" <jason@nospam.instrumental-it.com>]

Hi all

I'm slowly getting the hang of routing. Here's my current problem. First
I'll explain my setup:

Computer 1:
* ppp0: 203.x.x.121 (Direct connection to Telstra Big Pond)
* eth0: 203.x.x.123

Computer 2:
* eth0: 203.x.x.122

The problem: How do I setup routing so that computer 2 can be seen on the
Internet?

Computer 1 has a direct connection to the Internet and works fine. We are
running mail, web and squid to give all internal users access to the
Internet. Computer 2 cannot be seen from the Internet.

* The ppp0 to telstra is 203.x.x.121 our end which is linked to teltra's
gateway of 139.x.x.x
* I can ping 139.x.x.x from Computer 1
* I cannot ping 139.x.x.x from Computer 2
* I have swapped over IP address on Computer 1 (ppp0) to that on Computer 2
(eth0) and manage to operate the direct connection correctly. This implies
that routing on Telstra's end to 203.x.x.12x is correct!
* Computer 2 can ping 203.x.x.121 and 203.x.x.123 on Computer 1 (They're on
the same network)

I cannot even ping 139.x.x.x from Computer 2, let alone make Computer 2
visible the outside world! With my routing I used a destination of 0.0.0.0,
gateway of 203.x.x.121, mask of 0.0.0.0!?

I need Computer 2 to be seen on the Internet and access another Web Server!

Any ideas?

Regards,

Jason Lowe
jason@nospam.instrumental-it.com



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