For access to router / switch using aux / auxiliary port with or without modem, we can set password.
For access to router / switch using Telnet we use the Virtual Teletype (VTY) lines. To protect VTY port from unwanted access, we must configure password on this port. Also, if password is not configured and enabled, Telnet access will not be possible.
There is only one console port on all routers / switches, so the mark is console 0. To protect console port from unwanted access, we must configure password on this port:
The Enable password is used to allow security when an administrator is going from user mode to privileged mode. It is used to protect privileged mode on equipment which is not physically secured. The Enable password is an old, non-encrypted command that should not be anymore in use (password it is stored in startup-config file non-encrypted). Continue reading “Enable password”