Securing the information on your company network is a top priority for network administrators. Security is also required as the routing protocols used are internationally known standards that typically provide little or no inherent security by themselves.

The two reasons for securing your network are the sensitive and proprietary information on your network, and also your external bandwidth. Hackers not only can steal your information, but they can also steal your bandwidth. Routing is a good low level way to secure your network, even before UTM features are applied.

Routing provides security to your network in a number of ways including obscuring internal network addresses with NAT and blackhole routing, using RPF to validate traffic sources, and maintaining an access control list (ACL) to limit access to the network.

This section includes: