Network Administrator Street Smarts: A Real World Guide to CompTIA Network+® Skills, Second Edition

3.10. Task 3.10: Establishing Data Encryption Between Routers

So far, you have seen how to encrypt routing advertisements between routers, but what if you need to encrypt the user data that passes between two or more devices on opposite sides of a vulnerable link? For that, you must establish some form of data encryption, which gets highly complex very fast. Various methods are available to accomplish this task and sometimes even varieties among these methods.

This task introduces you to one of the more basic yet effective methods, a simple IPSec encryption with pre-shared key authentication for anti-replay protection. Other methods are the fodder for complete volumes and beyond the scope of this book. Suffice it to say that unless you care ...