Our company is using Catalyst 3750G switches for the core network, and ASA5520, ASA5510 and PIX units for our borders (we have a few small branch offices). I recently installed CiscoWorks and was trying to manage the ASA and PIX units, but had no success. The documentation says that these devices aren't supported. I tried the Cisco Network Assistant, and ran into the same problem. In CiscoWorks, I can find the device with the SNMP discovery, but it is marked as 'Unreachable'.
Surely Cisco provides some way of managing these devices centrally, either with one of the aforementioned programs, or some other. Since I am quite new to Cisco products, I simply don't know where else to look.