Port is open but not listening. I am trying to open port 3000 on Ubuntu 12.

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Port is open but not listening. Ports are used to establish network connections between computers. The instructions are applicable for all Linux and Unix-based operating systems like macOS. 04, cause I have a web server listening there. If it is the same host that is on the configured firewall rule then your host does not have a listener on those ports. Is this for the same host? Adding the ports to a service group only opens the ports through the firewall. The port is open because you opened it. Checking which ports are open helps you spot vulnerabilities, fix connection issues, and keep your system safe. Nothing is wrong. When you use netstat -an command and telnet, only when there's application which are using port 6300, will show listening or telnet successfully. Jan 14, 2025 · Hi: I have a Windows 11 Pro machine version 23H2 where the service 'Remote Desktop Services' (TermService) is running but when I run >netstat -a -o there are no listeners for port 3389. I have tried turning off the firewall on both the router and windows 10. While necessary for apps and services, unprotected ports can become security risks. P I have a weird situation going on with an open network port. I have made my computer's ip static via "Network and Sharing". It's not clear what results you expected, but you got the results that you should have expected. If you set an inbound rule to allow connect port 6300, this port will be open. I have forwarded the port for the host computer's ip. Jan 5, 2021 · There is a difference between having a process listening on the port and having the port allowed on the firewall. Although the process of opening, listening, and closing network ports is seamless, identifying currently open or listening ports can help troubleshoot network-related problems. My main question is, why would there not be a program associated with an open TCP port: netstat -ln --program Active Internet connectio Aug 20, 2023 · The freeware application CurrPorts by NirSoft provides an easier way to view what is listening on a port, displaying detailed information about the process and allowing for better management of ports. I'm a bit out of my confort zone here, and spent many hours trying to solve the problem without success. May 21, 2024 · Listening ports are ports that are currently in use by the computer. Jun 6, 2020 · This article explains how to find out the ports in use and which services are listening on which ports using the netstat, ss and lsof commands. 1. Some host behind the firewall has to be listening for those ports and respond to requests to those ports. The server device appears to be working correctly; the server application is listening on A and B. Help! Jul 23, 2025 · Open ports on your Windows computer act like doors for data-letting information in and out. My remote control software also does not list A or B in the Network/Open Ports list. 2. The hardware firewall still has the rule active. I have tried other ports as well. Nothing is listening on that port because you didn't set anything to listen on that port. We will be deploying a new application to a Server and the application will be listening on port 8443. Apr 8, 2019 · I'm trying to open a port for a private server for my friends to join me. Dec 19, 2018 · It depends. May 6, 2017 · You have not made any attempt to cause anything to listen to that TCP port. We have asked Network team to open the firewall for the port 8443 on that server before deploy I am trying to open port 3000 on Ubuntu 12. Windows Remote desktop is turned on and Windows reports the… Aug 16, 2022 · Running netstat -aon before the application times out doesn't list either port as listening. melkjlj lozym jkhgy sxum abqki cwfbuvi arwcpm qzr qrtx emp