Hi All, Just a few questions, wondering if anyone could answer them. 1. Can Exchange server traffic to limited to specific range of port? 2. Is there a recommended range of ports by Microsoft to lock Exchange into? 3. If #2 is no, then how many ports are needed by Exchange (1, 10, 50?). Pick a high range ports say from (62,520+) to lock Exchange into.

If you mean for users It's hideously complex and completely unnecessary these days. All the user needs to access the CAS/FE (version??) is TCP443 (HTTPS). If you want to set VLANs to keep users away from BE/MBXs you can do that with less grief. It is not supported to put a firewall between CAS/FE and BE/MBX. "IDK215" wrote in message news:9293daca-f14b-43ce-8c38-649aaa98bd9d... Hi All, Just a few questions, wondering if anyone could answer them. 1. Can Exchange server traffic to limited to specific range of port? 2. Is there a recommended range of ports by Microsoft to lock Exchange into? 3. If #2 is no, then how many ports are needed by Exchange (1, 10, 50?). Pick a high range ports say from (62,520+) to lock Exchange into. Mark Arnold, Exchange MVP.

Hi, For this question, you can refer to the below two articles: Exchange Network Port Reference http://technet.microsoft.com/en-us/library/bb331973.aspx Verifying static ports are used between Outlook and Exchange 2010 http://www.msexchange.org/articles_tutorials/exchange-server-2007/planning-architecture/uncovering-new-rpc-client-access-service-exchange-2010-part2.html Thanks Allen