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hairpin routing on an ASA 5505?

I have a customer with an ASA 5505 which works quite well with the one WAN outside interface connected to my ISP and the Internet and the inside interfaces connected to my LAN 192.168.19.x

The client has installed a second high-speed (& expensive) WAN link for certain traffic and wants all data going to a certain subnet to be routed out that link. That WAN link has its own NAT router and the "inside" address of that router is 192.168.19.238

I thought I could do this by just enabling hairpinning:

same-security-traffic permit inter-interface

same-security-traffic permit intra-interface

and then adding a "route inside" statement...

route inside 123.45.67.0 255.255.255.0 192.168.19.238

But that doesn't seem to work, I get an error showing up in the log:

Oct 10 2008 14:23:42: %ASA-3-305006: portmap translation creation failed for tcp src inside:192.168.19.116/2778 dst inside:123.45.67.2/80

Am I trying to do something that is simply impossible on the ASA and perhaps I should recommend a 871 ROUTER?

Any thoughts?

1 REPLY

Re: hairpin routing on an ASA 5505?

Thomas,

What you are talking about "policy based routing" as the ASA is NOT a router or a specific layer 3 routing device, what your customer wants, is not possible.

HTH>

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