Cisco ASA, Mutiple VLANS ASA as Default Gateway.

[l33byt1980]

So I have 3 networks, all class B,

Lets call these Networks A,B & C

All of these go into a windows box which carries out all the routing (Purely temporary) This uplinks to the inside interface of the ASA with a Network B address.

I was recieving the below error;
portmap translation creation failed for icmp.

This was a ping between network C and the inside interface of my ASA.

Which I resolved by adding a NAT static rule for the entire subnet.
However this does not help adding one for my network A as it sees the static rule between network B&C and therefore will not let it add it to the ASA.

My question posed with the following points,
I cannot trunk the ASA as it is not licensed,
I cannot add anothe interface to carry this out either.

How can I get all networks speaking and NATing correctly.

Thanks.

ACA - IPOffice implement
ACA - IP Telephony
CCNA - Passed at last

 

[Supergrrover]

Can you post a topology and config?

If your windows box is doing routing internally, then you just need to add routes to the internal networks to the ASA.

route inside A-network 255.255.0.0 windows-router
route inside B-network 255.255.0.0 windows-router
route inside C-network 255.255.0.0 windows-router

There won't be any natting except out to the internet and back through.

Brent
Systems Engineer / Consultant
CCNP, CCSP