false, and must be a JSON bool
Note: If your organization has a firewall that restricts the traffic to or -from the Internet, you need to configure it to allow connectivity with GCM. +from the Internet, you need to configure it to allow connectivity with GCM in order for +your Android devices to receive messages. The ports to open are: 5228, 5229, and 5230. GCM typically only uses 5228, but it sometimes uses 5229 and 5230. GCM doesn't provide specific IPs, so you should -allow your server to accept incoming connections from all IP addresses +allow your firewall to accept incoming connections from all IP addresses contained in the IP blocks listed in Google's ASN of 15169.