Replicator. FTP connection issue.



Replication issue: Read timeout

Windows FTP Server



Most probably the issue is related to the firewall on the 'problem' site. TCP port 21 is blocked between FTP and this server. But it could also be on any of the other intermediate devices if this particular site falls outside the rules to permit the traffic on port 21.

You should validate that TCP traffic on port 21 is allowed through all these devices, for the communication from the server running replicator on the vessel to the FTP server.


Need to configure the FTP server and vessel /office server.

Limit the port range used for FTP passive mode data transfer from for example to 50000-60000.





On the next step need to add a new Firewall rule on the 'problem' site to allow connections from FTP server IP with matching port range.

The required port range must be open in the NAT/router used for the connection and all the firewalls between the 'problem' site and the FTP server.