Foundation Topics

One of the important elements to securing the network is preventing unauthorized users from gaining access to router and switch administrative access interfaces. If an intruder were to gain console or terminal access into a networking device, such as a router, switch, or network access server, that person could do significant damage to your network—perhaps by reconfiguring the device, or even by just viewing the device's configuration information.

Typically, you want administrators to have access to your networking device; you do not want other users on your LAN or those dialing in to the network to have administrative access to the router.

Steps can be taken to securely configure your administrative access to your network devices. Password protection enables you to restrict access to a network or a network device. Privilege levels enable you to define what commands users can issue after they have logged in to a network device.

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