I have a 1 NIC ISA 2006 Configuration that primarily serves as a Reverse Proxy and listens for HTTP/HTTPS requests on PORTs 80/443 for site1.company.com and then forwards that traffic to SharePoint Server. OK, the problem is I want to listen also for site2.company.com on both HTTP/HTTPS on PORTs 80/447 and ISA flips an ERROR and states:
The Web listeners used in the rule site2.company.com and in the rule site1.company.com specify identical IP addresses and ports. Web listener IP addresses and ports used by different rules cannot overlap.
Actually the IP's don't over lap just the HTTP/HTTPS protocol, currently have site1.company.com and site2.company.com are on 2 different web servers.