How do I configure a Cisco ASA 5510 with multiple subnets and multiple external IP addresses?
Posted on 2009-07-10
Here is my problem. I have been a long time windows admin and have stumbled into cisco as a job requirement when a cisco asa 5510 was bought at my new job. I am starting from scratch and have read all over the internet and cisco's technical examples and configurations and have found nothing. What I need is each physical interface to be its own subnet: i.e.
etho0/0 would be the outside interface but with multiple external static IP addresses brought in on fiber handed of via ethernet
etho0/1 would be 10.10.8.0 subnet and all traffic allowed out from the users and specified traffic nat'd through to a specific server/servers from etho0/0 to one maybe two external IP's for email, RDP FTP and web VPN and a few other services.
etho0/2 would be 10.10.9.0 Same thing as above
and etho0/3 would be 10.10.10.0 but this one would have 3 external ip's from the etho0/0
The final catch is none of the subnets can talk to each other.
Can this be done? If so how would I go about mapping the external IP address to each subnet and keep them from seeing each other.
Sorry if this is an easy stupid question.