Most residential ISP's block ports to combat viruses and spam. The most commonly blocked ports are port 80 and port 25. Port 80 is the default port for http traffic. With blocked port 80 you will need to run your web server on a non-standard port. Port 25 is the default port for sending and receiving mail.

eks slave provided port:5000 is not reachable - Jenkins JIRA To work around this, I have created an NLB with a TCP listener and jenkins target group on port 5000. I then proceeded to place the DNS of the NLB in the "Jenkins tunnel" field of the kubernetes-plugin which allowed the agent to establish communication with the master! Cluster: Not Reachable On UDP Port 3433 | PeteNetLive 2 days ago · Problem seen when validating a Microsoft Cluster, node not reachable on UDP Port 3433.

Azure VM not opening non-default ports


Docker for Windows Container are not reachable outside

Jul 26, 2013 · Whenever I run the Setup Guide, it tells me that the port (58145) is not open. PFPortchecker gives me a very similar message ("Port is not open or not reachable"). I tried disabling the firewall and making an exception for u/Torrent and the port mentioned but it didn't make any difference. There is no history of ISP blocking traffic.