Kill Process Running on a Specific Port in Linux (2024)

FAQs

How do I stop a process on a specific port in Linux? ›

Now that you've identified the process using port 8080, you can terminate it using the sudo kill -9 command. This command sends a SIGKILL signal to the specified process, forcing it to terminate immediately.

From the Windows Task Manager, select the Processes Tab. Select the PID Matching with command result (in this case, the PID of the process is 1480) corresponding to port 4444 processes. Right-click on the process. Select End Process.

The fuser command combined with the -k (kill) option will end all associated processes that are listening on a TCP or UDP port. Simply provide the port number and type (TCP or UDP) in the fuser command. You can use the lsof command to verify that processes are no longer running on the target port.

You can use the npx kill-port 3000 command to kill a port already in use. This package is designed to kill all processes running on a port number, making it convenient to handle port conflicts without manually searching for the process ID.

Start the Windows Task Manager by pressing Ctrl-Alt-Del. Click on the Processes tab and select the application/process that is using port 80. Note that you can add a PID column by selecting View>Select Columns... and choosing PID from the list. Click the End Process button.

Access to the https://ip_address:8443/config on the network interface is enabled by default. To disable remote configuration access, from the /config interface | Remote Access | and select "Disabled" on the Remote Configuration Access drop down list and click the "Save Changes" button.

You will need to create a firewall traffic rule to block any traffic using port 53. Remember that there's both UDP and TCP traffic that can use port 53, and to block either or both as appropriate. Also note that while blocking DNS traffic except to specific resolvers is a good idea, it does not stop DNS tunneling.

What happens if I close port 445? ›

Note that blocking TCP 445 will prevent file and printer sharing, including over apps – if this is required for business, you may need to leave the port open on some internal firewalls or use encryption keys.

The kill -9 command sends a SIGKILL signal to a service, shutting it down immediately. An unresponsive program ignores a kill command, but it shuts down whenever a kill -9 command is issued. Use this command with caution since it bypasses the standard shutdown routine, and any unsaved data will be lost.

Kill -2 sends an interrupt (2 is the value associated with SIGINT). This will wake up the sleep call but then the loop continues. If you send a 15 (SIGTERM), the process should terminate.

This fuser 8080/tcp will print you PID of process bound on that port. And this fuser -k 8080/tcp will kill that process. Works on Linux only. More universal is use of lsof -i4 (or 6 for IPv6).

To kill a port from the terminal, you can use the lsof command to find the process id and then the kill command to terminate that process. If you prefer a one-liner, the npx kill-port 3000 command can kill all processes running on port 3000.