Configure SSH on Cisco IOS

Step 1: Configure a hostname
Router(config)# hostname R1

Step 2: Configure a domain name
R1(config)# ip domain-name ciscowired.com

Step 3: Create RSA encryption key pair
R1(config)# crypto key generate rsa

The name for the keys will be: R1.ciscowired.com Choose the size of the key modulus in the range of 360 to 2048
How many bits in the modulus [512]: 1024

Show Commands:
show ssh
show ip ssh

IOS Command: term mon

Wanna monitor calls flowing through you voice gateway. try this!

R1(config)#terminal monitor
R1(config)#debug isdn q921
R1(config)#debug isdn q931

To stop monitoring
R1(config)#undebug all