Multiple routes out

[Oliver Humpage <oliver () watershed co uk>]

There must be a trick to do this, but I can't figure it out... It's kind of
like routing based on source address rather than destination, but I'll
explain (will try to keep it brief).

I have two external networks coming into the building, and two corresponding
internal networks. There is a Cisco ASA5510 (with Sec+ licence, OS 7.0.4) on
the border, so essentially:

Ethernet0/0 = OutsideNet1
Ethernet0/1 = InsideNet1
Ethernet0/2 = OutsideNet2
Ethernet0/3 = InsideNet2

To make matters interesting, InsideNet1 is made of routable IPs, whereas
InsideNet2 is made of RFC1918 IPs, and hence the ASA will be static NATting
them. Don't know if that makes a difference.

So basically, anything coming in to the ASA on InsideNet1 needs to be given
to the OutsideNet1 interface, and be routed to the default route there.
Anything coming in on InsideNet2 needs to be given to OutsideNet2 interface
(and be static NATted), and go to the default route on that interface.

Any ideas how to go about configuring that? Or shall I give up now? :)

Thanks as ever,

Oliver.


-- 
Oliver Humpage
ICT Co-ordinator, Watershed Media Centre -- +44 (0)117 9276444

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