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What firewall settings are needed when syncing over FTP?

Q:  When setting PeerSync to sync over FTP, are there particular ports that need to be open through the firewall?

A:  PeerSync uses default port number 21 for FTP and 22 for secured FTP. 

Q:  Are there any other firewall settings which need to be set to allow PeerSync to run as expected?

A:  Depending on the firewall, opening the selected port should be sufficient.

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