SSH configuration

Secure Shell (SSH) is a protocol which provides a secure remote access connection to network devices.

The Cisco IOS image used must be a k9(crypto) image in order to support SSH. For example c3750e-universalk9-tar.122-35.SE5.tar is a k9 (crypto) image.

Set Up an IOS Router or Switch as SSH Client

There are four steps required to enable SSH support on a Cisco IOS router:

1. Configure the hostname command.
2. Configure the DNS domain.
3. Generate the SSH key to be used.
4. Enable SSH transport support for the virtual type terminal (vtys).

conf t

hostname jason

ip domain-name jason
aaa new-model
username jason password 0 jason

crypto key gen rsa

1024

line vty 5 15

transport input SSH

http://www.cisco.com/en/US/tech/tk583/tk617/technologies_tech_note09186a00800949e2.shtml