I am facing one issue were winscp is not getting connected to F5 AWS virtual appliances. Tried on both FTP & SFTP ports.Is there is restriction on F5 virtual appliance for winscp connectivity.
Note: Telnet is happening fine on F5 virtual appliance ip on SFTP port.
If you are encountering the "Network error: Software caused connection abort" error, it may be sshd service restriction.You can check the SSH allowed IP list from the "System > Platform" menu on GUI.
If you are encountering the "Received too large (1936094320 B) SFTP packet" error, the user does not have advanced shell privileges.https://support.f5.com/csp/article/K16621651