Proxy Authentication Failed error

Question

I\'m trying to access an FTP server through an FTP SITE Proxy to bypass a firewall using it.sauronsoftware.ftp4j.FTPClient I know my username/password is correct be

Answer 1

Check password property name. It's name is ftp.proxyPassword, and not ftp.proxyPass.

System.setProperty("ftp.proxyUser", "proxyUser");
System.setProperty("ftp.proxyPassword", "proxyPass");

Try it and let us know your results!

Answer 2

I found the solution...

I discovered that the FTP client was responding with a different response code:

200-User <username> authenticated by FireWall-1 authentication

In the source code of FTPProxyConnector, a response code of anything other than the regular

230-Connected to server. Logging in...

will throw an error.

I had to decompile the class file for FTPProxyConnector and then modify the source code, then recompile and save it back to the jar. Worked like a charm.

Answer 3

Check password property name. It's name is ftp.proxyPassword, and not ftp.proxyPass.

System.setProperty("ftp.proxyUser", "proxyUser");
System.setProperty("ftp.proxyPassword", "proxyPass");

Try it and let us know your results!