Thursday, April 10, 2008 4:31 PM
We have one OCS 2007 FE server and one OCS 2007 Consolidated Edge server.
I have few users who can send files through Communicator 2007 but cannot receive files.
I have also users who don’t have any issue in sending/receiving files.
I have few users who even cannot send/receive files.
Are there any known reasons why it works for some users and not for others?
Do I have to allow TCP ports 6891 – 6900 on our firewall for external file transfer?
With best regards,
Wednesday, April 16, 2008 3:03 PMFile transfer is peer-to-peer TCP 6891-6900 from to/from everywhere for file transfer to work (not sure about double nat issues)
Thursday, April 24, 2008 6:43 AMi also face the same problem...is it the firewall need to open port for file transfer?
Monday, October 19, 2009 7:28 AMi also get this problem, we have allow port 6891 -6901 on firewall (ISA and ASA) inside and outside but its same we can't send recevie file using OCS, any have solution and advise for this case??