WebLink Connect (Atlas) uses certain IP ports to communicate with our hosted servers. If you use a firewall or proxy server to connect to the Internet, you must configure your connection so that the ports used by Atlas are not blocked.
TCP Ports used:
PORT NUMBER: DESCRIPTION
TCP Port 21: Standard FTP command connection - this port is used by the Web Template Manager to update files on your site.
TCP Port 80: Standard HTTP website connection - this port is the primary port for browsing websites.
TCP Port 443: Standard HTTPS website connection - this port is used for SSL connections for both your website and Atlas.
TCP Port 1433: Microsoft SQL Server connection - this port is used by Atlas to connect to your back end database.
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