I've been tasked to replace our old sonicwall tz170 firewall with an ASA 5510 and configure it (which I've never done, only routers and switches) and I have a few questions. I'm inside the ASDM and I'm trying to setup my outside interface... The 5510 came with an SSM card, and I assumed this would be my outside interface, but I'm guessing I'm wrong since it isn't an option when running through the wizard. I know what the SSM card is for, I just don't understand why it isn't an outside interface. Where does this connect (just to my LAN??)?
Currently I set up the management interface to our ip and subnet and am connected through that. I see the management interface and eth0 - eth 3.
This is as simple as it can get, I just need the outside interface to be our public ip, setup the access rules to match my sonicwall.
Also on the version, its running ASA 8.2.1. Should I upgrade to 8.3.1? What is the ED after the version (not familiar with it).
Those rules on the ASA are default rules, it is saying anything initiated from the inside is allowed out but nothing initiated from the outside is allowed in. Sorry but I am not familiar with SonicWall at all to give you any tips on the rules you will need to setup. However if all you have is an outside and inside interface then you will need a nat.pat to ensure that internal addresses can get out and access list to restrict those internal networks if needed. If you have inbound traffic ie to mail, web server etc then you will again a nat and a access list to allow the traffic in.
The attached document (you can ignore the router configs) should hopefully give you a better idea of how inbound traffic works and how to apply access lists to interface.
Let me know if this helps.