I've run into a problem that I'm not sure how to solve.

I have an LFS v6 box running as a firewall/router/server between my home LAN 
and the internet. It was working fine for years, but the other day I added a 
second IP address to the external NIC. I did this by just running:

> ifconfig eth1:1 <second external address>

I did this because I've installed an Exchange 2007 server behind the firewall 
that I want to DNAT to from outside on a unique IP address.

Here's the problem: whenever I have that second address installed I get odd 
connectivity problems. Website redirection doesn't work (I noticed this when 
the links from my yahoo home page to various RSS feeds I've subscribed to 
fail). Some websites also fail to load. DNS resolution also fails for selected 
sites (but not others).

Removing the second address clears up the problem. But of course that knocks 
out access to my Exchange server.

I have bind running on the LFS box, slaved to a Windows Server 2008 box behind 
the firewall (which is the same box that hosts Exchange).

It looks like either bind or the DNS server on the Windows box is getting 
"confused" when the external interface has two IP addresses.

- Mark


__________ Information from ESET NOD32 Antivirus, version of virus signature 
database 3419 (20080905) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

-- 
http://linuxfromscratch.org/mailman/listinfo/blfs-support
FAQ: http://www.linuxfromscratch.org/blfs/faq.html
Unsubscribe: See the above information page

Reply via email to