Enabling SSH on a Cisco Router for Secure Remote Login

1. Ensure you have a hostname configured on your router:
   Router#conf t 
2. Router(config)#hostname router23
3. You must also configure a domain name:
   Router(config)#ip domain-name jpt
4. Generate an RSA keypair with a key length of 1024 bits using the following sequence of commands:
   router(config)#
   router(config)#crypto key generate rsa
5. The name for the keys will be: routername.soundtraining.class (where routername is your router's hostname)
6. Choose the size of the key modulus in the range of 360 to 2048 for your
     General Purpose Keys. Choosing a key modulus greater than 512 may take a few minutes.
7. How many bits in the modulus [512]: 1024% Generating 1024 bit RSA keys ...[OK]
8. Create a username in the router’s local database for SSH authentication using the following command (for the purpose of the exercise, use the username “user15”):
   router01(config)#username user15 privilege 15 secret p@ssword
9. Enable login authentication against the local database when logging in to a terminal line with the following commands:
   router01(config)#line vty 0 15
10. router01(config-line)#login local
11. router01(config-line)#exec-timeout 0 0
12. router01(config-line)#logging synchronous
13.  router01(config-line)#transport input ssh