I have 2900 series legacy router being configured for small office environment with a single ISP connection, and are assigned a single IP address.  I am using 10.0.0.0 network address space sent to a ASA5540 to use PAT with the ASA's outside interfac...

I set up a basic configuration on a 5540. After testing, it seems that the device is letting everything in,  Web traffic, imap(993), and several other things.  I had intended to set up some access lists to allow certain things in from specific IP add...