Let's enable SSH version 2 and also allow ssh for remote access. RP/0/0/CPU0:ios(config)#ssh server v2 RP/0/0/CPU0:ios(config)#line default transport input ssh. This is how you configure ssh on Cisco IOS-XR devices. Now what if, you want to restrict SSH login. To do this, you need to go control-plane management-plane. This is where you select ...
You can access Cisco ASA appliance using Command Line Interface (CLI) using either Telnet or SSH and for web-based graphical management using HTTPS (ASDM) management. Telnet uses TCP port 23 and is not secure. Secure Shell (SSH) on the other hand uses port 22 and is secure. SSH uses public key cryptography to authenticate remote user.