what ports on Exchange 2010 are required to communicate with Outlook through a firewall via a VPN?
What ports on Exchange 2010 does it use to communicate with Outlook through a firewall via a VPN?
To put it simply here is the scenario:
user connects to Firepass VPN....once on the VPN they open up a local copy of Outlook on their PC. We were having an issue with the firewall blocking access. had my admin look at teh logs and we determined that the firewall was blocking access on ports 12745 and 12838. Once he opened those ports Outlook opened fine.
It has worked great for a week but today we ran into the same issue where Outlook could not connect to Exchange 2010 over the VPN. Looked at logs and discovered that ports 44883 and 44984 were now being denied by the firewall.
Seems like these ports requested by Exchange 2010 are being denied by the firewall and they change...
Any ideas on what ports need to be open on the firewall on a consistent basis? Sure we can keep adding these ports to be open on the firewall but looks like they may keep changing
If managing Active Directory using Windows Powershell® is making you feel like you stepped back in time, you are not alone. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why.