13.1. Why Secure Your Devices?
I can't tell you how many people ask, "Which services and processes on a router should I turn off?" Table 13.1 contains a listing of the most vulnerable and most commonly attacked services and processes, and you should seriously consider disabling these. The listing is not complete by any means, but it is a great place to start your security audit.
|Open router interfaces||Limit unauthorized access to the router and the network by disabling unused, open router interfaces.|
|Bootp server||This service is enabled by default. This service is rarely required and should be disabled.|
|Cisco Discovery Protocol (CDP)||This service is enabled by default. If not required, this service ...|