i put this cisco 2600 router on line.
when i was doing namp from another network to my network
it was saying
PORT STATE SERVICE
23/tcp open telnet
50001/tcp open unknown
then when i did telnet to 23, it took to to login section of cisco router
but i dont know what this 50001 is doing.
(a)what this 50001 do for cisco router ??
(b)also, can not i disallow ppl to telnet port 23 ??
(c)how do you see all open ports in this cisco router /?