You want to stop all external access? Or just some of it....if that from where? Firewall denies on the IP ranges come to mind as a quick easy fix.
From: [email protected] [mailto:[email protected]] On Behalf Of Maglinger, Paul Sent: Wednesday, September 9, 2015 10:19 AM To: New Exchange List ([email protected]) Subject: [Exchange] Restrict external OWA access I've looking for a way to restrict OWA access externally. One method which intrigues me is this: http://www.leederbyshire.com/Articles/Block-Or-Allow-OWA-Depending-On-Location-2007.asp Although written for Exchange 2007 (this environment is Exchange 2010), the files exist and it seems that it would work. Other solutions involve setting up a second IP address and setting up another virtual directory. This seems to be the less complicated of any other method I've found. Would anyone care to chime in with an opinion? -Paul
