This report discusses the design, implementation, and performance evaluation of an authentication scheme for use in a dynamic load balancing environment. Measurement experiments were conducted on our implementation using trace-based artificial workloads. The performance gains due to authenticated load balancing, as well as the impact of authentication on the performance gains of unauthenticated load balancing were evaluated. With the mean job response time as the primary index, the results of our study show that authenticated load balancing provides a non-negligible performance gain when compared to a non-load balanced system. As was expected, the performance gains due to authenticated load balancing are substantially smaller than those experienced with unauthenticated load balancing.