[TriLUG] Off Topic: Need Cisco Router Config Help

[Tarus Balog]

On Apr 3, 2008, at 4:47 PM, Nick Goldwater wrote:
> So is your local lan 172.20.1.x or something different that needs to  
> be routed?
> Perhaps I'm missing something but it appears that  
> private.opennms.com is on the same subnet?

Okay, I have a bunch of virtual domains that point to  
private.opennms.com. They are NAT'd from the outside world to  
172.20.1.10 (on the LAN).

However, when I am actually on the LAN (with a 172.20.1.x address) I  
can't reach any of those external addresses, as going to  
private.opennms.com terminates on the router and it is not NAT'd to  
the proper box.

I get around this now with an entry in /etc/hosts for those domains to  
point to 172.20.1.10 that I just comment out when I'm off the LAN, but  
I'd like a better solution. I know that we can futz with the DNS  
server and make this work, but we'd rather not have to if there is a  
better way.

Remember that low-end routers seem to NAT regardless of where the  
traffic originates. I've been told that this is actually incorrect  
behavior but it made things easier.

-T

_______________________________________________________________________
Tarus Balog, OpenNMS Maintainer             Main:   +1 919 533 0160
The OpenNMS Group, Inc.                     Fax:    +1 503 961 7746
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