FTP does not work through the firewall

If you are having a problem using FTP through a firewall, use the following topics to help you troubleshoot the problem. Make sure you check each item in the order listed.

1. Firewall Rules – Verify that the firewall rules open the ports specified for using FTP.
2. Passive Port Range – Make sure the passive port range is configured correctly.
3. Check Point Firewalls – Make sure you set up the Check Point firewall to use bidirectional transfers.

The following topics provide procedures for troubleshooting FTP protocol firewall issues:

• Firewall rules prevent the port from opening - Provides procedures for troubleshooting port opening firewall rule issues.
• Passive port range is not defined in the firewall - Provides procedures for troubleshooting port definition firewall issues.
• Check Point firewall is not configured for bidirectional transfers - Provides procedures for troubleshooting Check Point firewall bidirectional transfer issues.