Ivan Pepelnjak, chief technology advisor at NIL Data Communications has a tip about one-time passwords on Cisco routers:
“Cisco routers preconfigured for SDM have default username/password cisco/cisco. As many users forget to disable or change the default username after configuring their router with SDM, they could end up with an exposed router.
“Cisco has patched this vulnerability in IOS release 12.4(11)T that includes the one-time password/secret option of the username command, allowing you to define a username/password combination that can be used only once.”
