User Level Access Management
In the absence of some mechanism to identify individual users as they log in, the Cisco Internetworking Operating System (IOS) relies on a simple locally defined password to authenticate remote users. By default, passwords are stored unencrypted in the running configuration. This basic level of security is not recommended for use in a production network. By using an authentication scheme that uniquely defines remote users accessing the routers, Network Operators can track configuration changes made and define varying levels of access on a per user basis. The Cisco IOS provides the capability to locally define usernames and passwords in the router configuration.
Cisco also supports some of the more common authentication ...
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