WebJob: FtpWebRequest to remote server always fail since a few weeks

Question

Hello there

I have some code implemented into my app logic pulling some CSV files from a partner FTP server.

This code has been working for a while, but it just stopped working over the past few weeks.

The code is fairly simple and just connect to an FTP endpoint to download a file:

        var path = ConfigurationManager.AppSettings["ftpFilePath"];
        var request = (FtpWebRequest)WebRequest.Create(path);
        request.Method = WebRequestMethods.Ftp.DownloadFile;

        var response = (FtpWebResponse)request.GetResponse();
        var responseStream = response.GetResponseStream();
        var reader = new StreamReader(responseStream);
        var fileContent = reader.ReadToEnd();

This just topped working, giving this error:
Unhandled Exception: System.Net.WebException: Unable to connect to the remote server

I also tried another lib (FluentFTP) to see how that would work, and kind of a similar error came up:
Unhandled Exception: System.TimeoutException: Timed out trying to connect!

Both piece of code connecting to the FTP server I am using work locally without any issues.
Using my Command Line based app into WebJobs just flat-out fails with the errors posted above.

This indicates a change in how connections are done to the outside from within an App Service, is there anything done recently that could make this happen?

Any ideas?
Thanks!