
58 Chapter 3: Mobile IP Security
Protocol Authentication Extensions
In a routing protocol, it is important for peers to trust one another and to ensure that the
messages they exchange have not been altered in transit. False routing updates from untrusted
peers or altered updates from trusted peers can wreak havoc on a network, for example, causing
traffic for multiple prefixes to be routed incorrectly or even blackholed.
Even though Mobile IP limits the impact of rogue updates because each routing update is for
an individual host and only affects that host, it is just as important to secure the routing control
messages. In fact, because Mobile IP ...