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Configure the firewall

The
Gateway Connector
runs inside your private network, behind your firewall, and has a private IP address. It connects to the
BlackBerry Gateway
cloud service with HTTPS and UDP, so you must configure the Connector to reach at least those Internet destinations (via NAT).
The
Gateway Connector
must be able to use DNS to resolve public
BlackBerry Gateway
FQDNs to Internet IP addresses. The Connector uses the DNS servers assigned to it by your private network to do this.
For more information about FQDNs, ports, IP address ranges and other firewall requirements, visit support.blackberry.com/community to read article 79017.