The Virtual Teletype (VTY) lines are used to configure Telnet access to a Cisco router. As I mentioned earlier, the VTY lines must be configured for Telnet to be successful.

Instead, the accepted alternative to Telnet's lack of security is Secure Shell (SSH). Learn how to configure SSH on your Cisco router. David Davis has the details.

For some reason my Cisco 2600 router sometimes refuses telnet connections. It becomes a real problem when I want to get in to change anything. I can fix it by power cycling it, but I was wondering ...