If Debug logs with " Packets dropped for some reason" show the following entries: packet dropped: 3-way handshake not completed (from PEDAGO, proto:TCP, len:40, 172.16.X.X:50062 -> x.x.x.x:990, flags:, seq:3962769934 ack:2601215957, win:0, tcplen:0)Ĭonsider disabling the 3-way handshake variable by modifying Kerio Control configuration parameters. The Add Network Location wizard will appear, click next twice. Open FTPS connection from the remote site to ensure the traffic is passing through the firewall ( Last Used column will show " just now"). Open ‘Computer’ and right click in a blank area, then select Add a network location. Listen to implicit FTP over TLS connection on the following ports: 990Īfterward create a traffic rule to allow FTP/FTPS services. If that is the case, you need to map the IP address of the FTP host using NAT.įileZilla Server settings should be set correctly as well.Įnable FTP over TLS (FTPS) and Generate new Certificate Usually, FTP servers are located on a separate workstation/PC connected to the Kerio Control firewall. This article provides information on how to configure Traffic Rules to allow such traffic flow. The FileZilla server throws the following errors: 227 Entering Passive Mode (192,168,10,13,243,247)ġ50 Opening data channel for directory listing of "/"Ĥ25 Can't open data connection for transfer of "/" The connection is successful from the local interface or using standard FTP port 21. While connecting to FTPS service (port 990) from the remote location, the connection is not reachable.
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