Network Administrator Account Security

The network administrator is responsible for setting up the network's security system. To do that, the administrator must be exempt from all security restrictions. Because of this the network administrator's account must be treated with extra caution.

Many networks automatically create an administrator user account when you install the network software. The username and password for this initial administrator are published in the network’s documentation and are the same for all networks that use the same network operating system.

One of the first things that you must do after getting your network up and running is to change the password for this standard administrator account. Otherwise, your elaborate security precautions will be a complete waste of time. Anyone who knows the default administrator username and password can access your system with full administrator rights and privileges, thus bypassing the security restrictions that you so carefully set up.

Don’t forget the password for the administrator account! If a network user forgets his or her password, you can log on as the supervisor and change that user’s password. If you forget the administrator’s password, though, you’re stuck.

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Source:http://www.dummies.com/how-to/content/network-administrator-account-security.html