The Secure Shell (SSH) protocol provides a remote login similar to Telnet, except that it uses more secure network services. SSH provides stronger password authentication than Telnet and uses encryption when transporting session data. This keeps the user ID, password, and the details of the management session private. As a best practice, use SSH instead of Telnet whenever possible.
Most versions of Cisco IOS include an SSH server. In some devices, this service is enabled by default. Other devices require the SSH server to be enabled manually. IOS devices also include an SSH client that can be used to establish SSH sessions with other devices.
Let us apply SSH on packet tracer.
As you see above figure you can see TELNET and SSH lopologys. I have created. in this tutorial we are going to configure SSH. lets configure all the interfaces in router 2 and see what will happen?
As you seen above figure we configure router interface, line vty to router 2. After doing configuration Set IPs on the PC. As, by default, all PC are in vlan 1. Now, we can ping to router 2 by our host computer command prompt.
Now, we can easily SSH to a router 2. and we can go inside router configuration mode from our PC. you can download SSH and TELNET PT tutorial
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