How to Disable a Computer Network

A network connections computers to other computers or devices which may contain useful resources. However, there are times when a network is a liability. In these cases, disabling a network is one method of preventing any ill affects. If the need for a network arises again in the future, the network can always be re-enabled.

Step 1 Determine if you want to disable the network via the local system (software), via the network or server the system is connected to (administrative) or by disabling the physical connection (hardware).

Step 2 To disable the network on a single machine via the system, go into the system configuration and set the network connection to disabled or off. For example, in Windows systems go into Control Panel -> Networking and then right click on the icon representing the network you with to disable. Choose "Disable." This will stop the system from using the network.

Step 3 To disable the network administratively, log into to either the networking equipment the system is connected to, or the server which authenticates the computer giving it permission to access the network. Revoke the right to access the network either by deleting the system from the list of permitted systems, or by setting the rights for the computer to not allow network access.

Step 4 To disable the network on a single machine via hardware, disconnect the network cable connected to the system. If this is not feasible, you can also disconnect the other end of the network cable at the hub or router.

Step 5 Disabling a network so that no system can use it is best done physically. Locate the networking hardware for the network. Generally, this equipment is in a central location like a server room, or on each floor in a networking closet. Disconnect the power to the networking devices such as routers, hubs, and switches. If this is not feasible, then unplug the incoming and out going network cables.