JSI Tip 7096. How do I configure Windows Server 2003 Network Load Balancing cluster to accept Internet Protocol security (IPSec) traffic on your network?

Microsoft Knowledge Base Article 820752 contains the following summary:

This article describes how to configure your Windows Server 2003 Network Load Balancing cluster to accept Internet Protocol security (IPSec) traffic on your network. Use this procedure if you want to use your Network Load Balancing cluster to receive virtual private network (VPN) traffic. This configuration helps to improve end-to-end security between clients and servers.