How to Disable telnet on Cisco switch totaly?

As an IT administrator, it is important to ensure secure communication in your network environment. One way to do this is to disable Telnet on your Cisco switch. Telnet is a protocol used for remote access and management of network devices. While it is still commonly used, it is not considered to be very secure due to its lack of encryption.

There are several steps you can take to disable Telnet on your Cisco switch. The first step is to disable the Telnet protocol itself. This can be done by entering the following command in the switch’s configuration mode:

no ip telnet

This command will disable the Telnet protocol on the switch.

The next step is to disable the Telnet service on the switch. This can be done by entering the following command in the switch’s configuration mode:

no service telnet

This command will disable the Telnet service on the switch, which will prevent it from listening for incoming Telnet connections.

The final step is to disable the Telnet access control list (ACL). This can be done by entering the following command in the switch’s configuration mode:

no ip access-list extended telnet

This command will disable the Telnet access control list (ACL) on the switch, which will prevent it from accepting any incoming Telnet connections.

Once you have completed these steps, Telnet will be completely disabled on your Cisco switch. This will help ensure that your network is secure and that unauthorized access is prevented.

It is important to note that while disabling Telnet on your Cisco switch is an important security measure, it is not the only one. You should also ensure that you are using strong authentication and encryption techniques, such as SSH, to protect your network and data. You should also be sure to implement other security measures, such as firewalls and intrusion detection systems, to further protect your network environment.