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Verifying the Connection Gateway connectivity - Amazon DCV Connection Gateway
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Verifying the Connection Gateway connectivity

Let's assume that the Connection Gateway host is associated with a DNS name, for instance dcv.gateway.domain, and it is listening on TCP port 8443 and UDP port 8443. We can use the nc command to test the connectivity of our gateway.

To check if the Connection Gateway is reacheable with TCP

Use the following command:

$ nc -vz dcv.gateway.domain 8443
To check if the Connection Gateway is reacheable with UDP

Use the following command:

$ nc -uvz dcv.gateway.domain 8443
Note

Note: The nc -uvz command can only confirm UDP connectivity failure when an explicit ICMP error (e.g., "Connection refused") is returned. If packets are silently dropped (e.g., by security groups or firewalls), the command may still report success. A successful result from this command does not guarantee that UDP traffic can reach the DCV Connection Gateway.