Why is my OpenVPN connection so much slower than my internet connection speed?
Posted on 2008-10-17
I have an OpenVPN tunnel set up between the two sites using TCP and port 51194 with encryption. The VPN server and client are also the router for each site and are running an ubuntu package from ebox-platform.com
I am experiencing slow speeds pulling files from a Windows 2003 Server in site A to a workstation in site B. I can achieve much faster speeds sending files from site B to site A.
I have compared the speeds of transfering files from site A to site B using FTP and VPN.
VPN - 30 KB/s FTP - 200 KB/s
Transferring a file from site B to the server in site A I get speeds upwards of 120 KB/s.
I understand there is some overhead using VPN, but I am only getting about 20% of my maximum site 1 upload speed. I can greater bandwidth if needed. However is there anything to help me get better performance from the OpenVPN?