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06.18.2008 at 01:23PM PDT, ID: 23496740 | Points: 500
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Hairpinning on ASA

Asked by hindsight in Cisco PIX Firewall, Network Routers, Networking Hardware Firewalls

Tags: Cisco, ASA, ASA-5505

I am attempting to replace a Netscreen, which is the firewall for the main internet line with an ASA 5505(192.168.1.5). I have a second ASA (192.168.1.250) which is on a seperate internet line connecting to 3 other sites through VPN tunnels. All computers and servers use the main internet line(192.168.1.5) for the default gateway.
On the main ASA, I created routes to the subnets on the other end of the VPN tunnels pointing to the other ASA. I created nat exemptions between all subnets and enabled intra-interface communication on the inside VLAN.

What seems to be happening now is pings work and I am guessing that udp traffic is passing as well. I am seeing "DENY TCP(no connection) errors when trying to connect to remote computers. I assume this is because the packets are taking a different path back to the souce.

Is there a way to have the ASA not inspect local TCP traffic? My current workaround is to put static routes on the servers for the VPN subnets but this isn't a good long term solution

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[+][-]06.18.2008 at 01:35PM PDT, ID: 21816929

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[+][-]06.18.2008 at 05:25PM PDT, ID: 21818387

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[+][-]06.18.2008 at 09:26PM PDT, ID: 21819228

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[+][-]06.19.2008 at 04:46AM PDT, ID: 21821176

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[+][-]06.19.2008 at 08:31PM PDT, ID: 21828243

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[+][-]06.27.2008 at 07:49AM PDT, ID: 21884356

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[+][-]07.02.2008 at 11:11AM PDT, ID: 21919047

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[+][-]07.03.2008 at 12:01PM PDT, ID: 21928180

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[+][-]07.21.2008 at 02:09PM PDT, ID: 22054365

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