Reverse proxy for sFTP

Hi

 

I try to do a reverse proxy for sFTP (and not FTPS). I try several solutions but it doesn't work.

 

My configuration are in global is like that : I have an external VIP which listen on the port 22. The virtual server redirect the traffic on the pool which is the sFTP server.

 

I tested several configuration on the virtual server :

 

• one Standard virtual server with no profile (only tcp)
• one Standard virtual server with a SSH profile. I use SSH proxy profile that I created (the rule allow all the traffic for the test)
• one Forwarding (IP) virtual server
• one Performance (Layer 4) virtual server

In all case, the link between the F5 and the sFTP server works. But when I tested the access at the VIP with WinSCP, I have the a message which says that the server didn't allow the sFTP but accept the FTP. When I tested this, I have no log on the F5, I see no traffic with tcpdump.

 

Can you help me ?

 

Thank you really much on advance.

 

Best regards.

 

Agathe