Unbuntu with 2 Network cards.

Tim Henderson bizdev at pwnspeak.com
Fri Jun 4 21:55:10 UTC 2010

There doesn't seem to be any way they could communicate with each other 
unless you explicitly set that up.

I run an ubuntu firewall before my router, which is quite different than 
your setup.  My ubuntu firewall takes in the connection from my isp, and 
send all packets through my firewall (iptables) before sending through 
the second nic to my router.  But the only reason they communicate with 
each other is because I am explicitly sharing the connection.

That's my 2c at least.

Tim H.

On 06/04/10 16:37, Maxime Alarie wrote:
> Good day,
> I have a Ubuntu server 9.1 server with 2 nics. I would like to put one
> Nic outside my firewall (public) and the other inside my firewall. Both
> nics wont be on the same subnet. Communications will be “impossible”
> between the 2 interfaces. root cant ssh on this server as well..
> Would you, as linux experts trust such a setup? There will be no
> sensitive information on this server. Just small demo applications on a
> webserve for some clients to try. I never created that kind of setup so
> im not sure how to proceed.
> Thanks.

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