Hello, My scenario is ISA 2004 Reverse Proxy (not member in the domain) in the DMZ for OWA 2000 publishing. I work around these excellent articles by Thomas, but my infrastructure is a little bit different. <http://www.isaserver.org/pages/article.asp?id=1214> http://www.isaserver.org/pages/article.asp?id=1214 <http://isaserver.org/articles/2004unihomedowapart1.htmlr> http://isaserver.org/articles/2004unihomedowapart1.htmlr I am using CheckPoint as my Front-End firewall and I located the ISA in the DMZ, my is OWA 2000 is located in the inside LAN and I wanted to know if its possible to publish the OWA in this infrastructure (that the ISA is not part of the domain) and how the authentication works in this scenario. My second question is where I need to put my SSL certificate for the Bridging option. Thanks a lot.