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Implementing Cisco Networking Solutions by Harpreet Singh

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Disabling unused global services

Many of the built-in services in IOS are not needed in the network. These features should be turned off in the default configuration and only turned on if there are explicit requirements. A configuration to turn off some of these services is as shown in the following figure:

Figure 10: Disabling unnecessary services on the router

The finger service allows remote users to view the users who have enabled a telnet session on the device. If the service is enabled, the router will respond to a telnet a.b.c.d finger command from a remote host and display the users before closing the connection. This can be a potential ...

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