Enabling SSH on Line VTY

Unanswered Question
Nov 16th, 2009

Hi All,

Today we allow Telnet via Line VTY across IOS routers/switches. 1) What configuration changes are required in Line VTY to allow Telnet and SSH? 2) Are there any IOS related dependencies for SSH protocol on routers/switches?

Jim Frys

I have this problem too.
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Collin Clark Mon, 11/16/2009 - 06:42

First you'll need the crypto image to configure SSH (look for k9 in the IOS file name). Then you'll need to configure SSH.

https://packetpros.com/cisco_kb/IOS_RTR_SSH.html

Finally add telnet and SSH to the VTY's.

line vty 0 4

transport input telnet ssh

The above command will only allow telnet and ssh. By default all protocols are allowed and the above line provides some additional security.

Hope that helps.

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