If two lines are cut by a transversal and the alternate exterior angles are congruent, the lines are parallel. Interiors on Same Side Converse. If two lines are cut by a transversal and the interior angles on the same side of the transversal are supplementary, the lines are parallel.
The open port checker is a tool you can use to check your external IP address and detect open ports on your connection. This tool is useful for finding out if your port forwarding is setup correctly or if your server applications are being blocked by a firewall.
Among them most common reasons: 1  Linux firewall is enabled on agent host, but port 383 is not opened. 2  Check if NTP is working correctly on server and agent. 3  Check if IP is correct or the node was moved. 4  Check whether the node exists on the server and is assigned to any node group.