Cisco has been enhancing IOS with every release to add more VPN functionality which brings it closer to the 3000 concentrator's specs. Other than SSL VPN's, is there anything the latest 12.3T or 12.4 IOS's can't do to emulate a full blown 3000 concentrator, albeit with a lot more command-line configuration? For a small company of 100 people, if I can coax a router to act as a 3000 concentrator, I can save some $$.
I already have a little 1751 working fine as a test with the Windows VPN client, but I haven't figured out (or tried to) all functionality like ADS/NT Domain lookups.
-B0b