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12/20/2008 at 02:26PM PST, ID: 24000981
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9.0

Creating IPSec Tunnel over static (non default route)

Asked by csuog in Networking Hardware Firewalls, IPSec Security Protocol

Tags: ASA 5510 IPSec

Hi,

My company has recently started replacing their own proprietary router/firewalls with Cisco ASAs.  On of our clients in particular has two sites connected via an IPSec tunnel.  Both sites have dual internet connections and one has an ASA and the other an ASA5505 (both with Sec+).

In terms of the ASA configuration I'd like to setup the routing table so that on each ASA the default gateway points to one Internet connection and then a static route points to the another internet connection.  The intersite IPSec connection then runs over the static routes.

The problem is that I can get the tunnel setup between the two interfaces that are setup as the default routes but I can't get the IPSec tunnel to come up between the statically routed interfaces. (ISAKMP Phase 1 doesn't even occur)  At first I thought this might be a problem related to the connections themselves but I've switched the default routes on each asa to the other internet connection and the tunnel comes up fine.

I'm kinda stumped now but I'm guessing that either its going to bes some kind of functionality restriction on the ASA or a configuration problem.  Can anyone let me know if that is the case?

If you'd like me to post the configs then please let me know.

Hopefully that makes sense but I'm happy to clarify if requried (with diagrams if necessary).

Thanks in advance for your help,
Stuart  




[+][-]12/20/08 02:32 PM, ID: 23219988

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[+][-]12/20/08 05:40 PM, ID: 23220464

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[+][-]12/21/08 12:19 PM, ID: 23223009

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About this solution

Zones: Networking Hardware Firewalls, IPSec Security Protocol
Tags: ASA 5510 IPSec
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Solution Provided By: prueconsulting
Participating Experts: 2
Solution Grade: A
 
 
[+][-]12/21/08 03:57 PM, ID: 23223755

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