I am trying to get FTP-connection through our company proxy server with WinSCP 5.5.5 but failing. I'm able to get access through our proxy server (squid 2.7. STABLE 5) ok with e.g. Firefox (32.0.1) with FTP -protocol and with FTP-proxy set as SOCKS v4, SOCKS v5 or even autoproxy. Same with Internet Explorer.
If I set the FTP-proxy in WISCP 5.5.5 to use FTP proxy SOCKS4 or SOCKS5, I just get timeout.
What could be the issue?