Pre-requisite

  • Putty application

Enabling SSH

  1. Connect to cisco console using putty.

  2. Press the enter key to enter into user mode.

  3. Execute the following command to enter into privilege mode:

    enable

  4. Load the startup-config into the running-config using the following command:

    copy startup-config running-config

  5. Execute the following command to enter into the configuration mode:

    config terminal

  6. Change the hostname using the following syntax:

    hostname

  7. Change the domain name using the following syntax:

    ip domain-name

  8. Generate the SSH keys using the following command:

    crypto key generate rsa general-keys

  9. On How many bits in the modules [512]:, type in 2048 and press the enter key.

  10. Enable SSH version 2 using the following command:

    ip ssh version 2

  11. Create an SSH credential using the following syntax:

    username  secret

  12. Create 5 (i.e. vty 0 to 4) virtual terminals for SSH connections, using the following command.

    line vty 0 4

  13. Allow only SSH to the newly created virtual connection using the following command:

    transport input ssh

  14. Use only the local database for credentials using the following command:

    login local

  15. Exit the virtual terminal configuration:

    exit

  16. Exit the configuration mode:

    exit

  17. Save the update on the running-config to the startup-config file using the following command:

    copy running-config startup-config

  18. Using putty, connect on any known IP of the router via SSH using the credentials you made from step 11.