UDP port
Verify that your Mac can reach the node’s UDP port (replace the IP address and port with your node’s values):
nc -v -u -z -w 3 66.175.217.225 4569
You should see:
Connection to 66.175.217.225 port 4569 [udp/iax] succeeded!
If the nc command is not found, install netcat:
brew install netcat
If the connection fails, check that the node is running, the port is open on the node’s firewall, and any router port forwarding is configured correctly.