Another one for the Doep

Doep is the only one who reads my stuff about network best practices. Thus, here is another best practices configuration for my old mate, Doep. (Payment in Guinness!) This configuration above is to setup Outlook Web Access for Exchange to external users from the Internet. It entails using a Checkpoint Charlie configuration. A Checkpoint Charlie configuration is the use of reverse proxies in a DMZ that is accessed externally from the Internet. The external incoming connections are terminated on the reverse proxy, which then presents the web pages which have been backhauled internally from the server farm. In this case, the reverse proxy is Microsoft's ISA server 2006. You can also read more about ISA, here.
A Checkpoint Charlie configuration can be used for any type of Intranet application that is hosted on a server farm and needs to be presented to external users.