CCSP Self-Study: Securing Cisco IOS Networks (SECUR)

Kerberos Overview

Kerberos is a secret-key network authentication protocol, developed at the Massachusetts Institute of Technology (MIT), that uses the Data Encryption Standard (DES) cryptographic algorithm for encryption and authentication. Kerberos was designed to authenticate requests for network resources. Kerberos, like other secret-key systems, is based on the concept of a trusted third party that performs secure verification of users and services.

In the Kerberos protocol, this trusted third party is called the Key Distribution Center (KDC). It performs the same function as a certification authority (CA), which is discussed in Chapter 9, “Building Advanced IPSec VPNs Using Cisco Routers and Certificate Authorities.” The following lists ...