The Filezilla FTP client is often used to upload and download files from FTP servers. However, firewalls and other programs that rely on TCP and UDP connections can interfere with FileZilla's ability to obtain and maintain a connection with an FTP server. Setting up your router for FileZilla via port forwarding can help bypass overzealous firewalls and prevent conflicts with other programs, allowing FileZilla to run at peak performance with very few problems.
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Open the Filezilla FTP program. Click "Edit" and select "Settings." Click on "Connection" in the settings hierarchy and select "Passive Mode."
Add a check mark to "Use Custom Port Range" and enter your desired port range. Valid ports can be from 1 to 65535, but users should assign a port range beyond 1024, as ports below that range are often reserved for other protocols.
Log in to your router's configuration page and enter the router's username and password when prompted.
Navigate to the router's "Port Forwarding" settings page. Enter "FileZilla" as the application name. Enter the start of the port range created in FileZilla into the "Start" text field and the end of the port range into the "End" text field. Set the "TCP" and "UDP" settings to "Both" and add a check mark to the "Enable" box.
Create another port forwarding entry with the same application name. Enter "20" as the start of the port range and "21" as the end of the range. Set the "TCP" and "UDP" settings to "Both" and add a check mark to the "Enable" box. Click "Save Settings" to finalise your changes. Restart your router, if necessary. The ports assigned for FileZilla should remain open for FTP traffic.
Tips and warnings
- Check the user guide for the IP address and administrative credentials required to access the router's configuration page. This information may also be found underneath the router itself.
- The methods for navigating to your router's port forwarding settings may vary between manufacturers and models. Consult your router's user guide for more detailed information.
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