Question

Periodically unable to connect to FTP

When trying to connect to FTP using Filezilla, I occasionally get “Error: Could not connect to server”. Then, without doing anything, it will work a few hours later. This has happened a few times now. Each time it fails without any interaction, and then self corrects without any changes.


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alexdo
Site Moderator
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April 4, 2024

Heya @bffe20e2d092407798209addeb821c

FileZilla supports both active and passive FTP modes. If you’re having trouble connecting, try switching between active and passive mode in FileZilla’s settings. Passive mode tends to be more firewall-friendly.

Also FileZilla has logs that can provide valuable information about connection attempts and errors. Check the FileZilla logs to see if there are any specific error messages that might indicate the cause of the connection issues.

If you continue to experience issues with FileZilla, try using a different FTP client to see if the problem persists. This can help determine if the issue is specific to FileZilla or if it’s a more general network or server problem.

Hope that this helps!

Bobby Iliev
Site Moderator
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April 2, 2024

Hello,

If you are still seeing this, what I could recommend here is to use SFTP instead of FTP. SFTP provides an additional layer of security but is also typically more reliable. You can set this up in Filezilla using port 22 and your SSH credentials.

If you switch to SFTP and still encounter issues, it’s a good idea to check the SSH logs. To check the SSH logs, you’ll need to access your server via SSH and navigate to the log directory at /var/log/. The primary file you’re looking for is auth.log on Ubuntu systems or secure on RHEL. Use a command like sudo tail -100 /var/log/auth.log to view the logs. In these logs, you’ll find records of all authentication attempts, successful connections, and errors.

Lastly, if you’re still persists, use a tool like MTR to test the network connectivity. To use MTR, you’ll need to run it from the command line on your local machine:

mtr your_server_ip

Change the your_server_ip with the IP address of the server you’re trying to reach. This will display the latency and packet loss for each hop, helping you pinpoint where potential issues might be occurring.

Let me know how it goes!

Best,

Bobby

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