Configuring your FTP Client to connect to Sophos' FTP

  • Article ID: 113454
  • Rating:
  • 24 customers rated this article 4.9 out of 6
  • Updated: 11 Dec 2013

In order to use the FTP site, you will need:

  • an FTP Client. The Sophos FTP has been tested with several FTP clients. The instructions below show how to configure FileZilla client ( to connect to Sophos' FTP.

  • credentials. Please contact Support if you do not have credentials. The credentials will be sent to you as an encrypted email using Sophos SPX Encryption.

Preparing files for upload

We strongly advise that all files uploaded to the Sophos FTP site be archived using the highest compression options available. We recommend using 7-zip to create these archives, it is available on many different platforms and is free to use.

Archiving files you intend to upload to the Sophos FTP has a number of benefits:

  • The time to upload the archive will often be shorter than in their original state.
  • The time for Sophos to download the file will also be shorter.
  • A reduced upload size also means less chance of an upload failure.
  • Archives can be easily password protected for added security.

Note: If you need to upload a sample file, see these separate instructions.

Settings required

FTP Client

The following details are required to configure an FTP Client to connect to Sophos' FTP. 

  • Host:
  • Port: 990
  • Protocol: FTP over explicit TLS/SSL.
  • Authentication is required, no anonymous access is allowed.

Use the following settings if you are not able to connect to the secure server.

Note: All data sent and received across the insecure ftp network may be visible to others!

  • Host:
  • Port: 21
  • Protocol: Plain FTP
  • Authentication is required, no anonymous access is allowed.


Firewall requirements (or use FTP proxy if you have one):

  • TCP destination port 990 – outbound.  
  • TCP range of destination ports 50000-51000 – outbound.

Configuring FileZilla to use Sophos' FTP

  1. Open FileZilla and click the icon in the top left corner:


  2. Click the New Site button to create a new site:

  3. Configure the new site with the following details (use the credentials that your account manager or other Sophos contact have provided):

  4. Ensure that you use either default or passive transfer modes:

  5. Click the Connect button. You will be warned about a certificate; you can permanently trust the certificate, as shown below:

If you need more information or guidance, then please contact technical support.

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