Foundation Topics

An important concern when securing the network is to prevent 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 significantly damage your networkperhaps 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.

You can take steps 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 which commands users can issue after they have logged in to a network device.

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