i have a 3640 router.. according to the documents, IOS 12.0 already has 'ip tcp intercept' commands.. but i cant seem to have it in mine..'show version' shows "12.0(7)XK1" as my IOS version..anyone?thanks!

i have an existing router(AS5400 IOS 12.2(2)XB12) which works flawlessly with my radius server(XTRadius)..now i want to add another NAS for my radius server.. a 3640 router (12.0(7)T) that is. and it has 3 16AM(Analog Modems) network modules..now i c...