How to Fix: NAT - FTPS (Error : Failed to retrieve directory list)

The 'NAT - FTPS (Error: Failed to retrieve directory list)' issue affects users who have set up FTPS (FTP over SSL/TLS) on their servers using vsftpd. This error occurs when the client-side FTPS connection fails to retrieve the directory listing after a successful login and TLS/SSL handshake.

This error can be frustrating for users as it prevents them from accessing the files on the server. However, by following the steps outlined in this guide, you should be able to resolve the issue and regain access to your files.

🛑 Root Causes of the Error

• The primary reason for this error is a misconfiguration of the FTPS settings on the client-side or server-side. Specifically, the issue may arise from an incorrect configuration of the SSL/TLS parameters or a mismatch between the client and server SSL/TLS ciphers.
• Another possible cause is a problem with the certificate used by the server, which prevents the client from establishing a secure connection.

🛠️ Step-by-Step Verified Fixes

✨ Wrapping Up

To resolve the 'NAT - FTPS (Error: Failed to retrieve directory list)' issue, you need to check and correct the FTPS settings on both client and server sides. Additionally, ensure that the SSL/TLS certificates are correctly configured and installed. By following these steps, you should be able to regain access to your files and resolve the error.