SFTP file transfer speed with Fortress


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Beth Redd
Beth Redd
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Hello,

The first thing I recommend is that you make sure you are using the latest version of Fortress SSH Server. You can get the latest version at www.pragmasys.com/ssh-server/download.

You can increase speed by increasing the window size for file transfers. This can be increased on the client side or the server side. 

On the server side, the window size must be set in the registry. Go to HKEY_LOCAL_MACHINE\SOFTWARE\PragmaSystems\SSHD. Increase the value for SSH_Window_size. 

Keep in mind that the smallest window size will be used, so even increasing the value for the server might not increase the speed if the client is using a smaller window size.

Beth Redd
rmassart
rmassart
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I am getting a file transfer (upload) speed of about 400KiB/s to our Fortress server, using WinSCP. By comparison we had about 2000KiB/s on our other SFTP server running under an old version of COPSSH.  Fortress is installed on a physical Windows Server 2012 machine.

Are there any tweaks or registry settings you can recommend for improving the file transfer speed?

Thanks,
Robin
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