networking - Bad Results from Port Check Sites
2014-07
user2373676
I'm not a network expert, though I know how to set up a static IP and forward ports. I've always wondered how port checking sites like http://ping.eu/port-chk/ work, because whenever I try them on open ports on my computer they always tell me they don't have access. However, hosting a server from them still works fine, and people outside my network can connect. I've always wondered why this is; whether or not I'm incorrectly forwarding my ports, if I'm looking at the information from the site wrong, or just using the site incorrectly to begin with. If anybody can, please shed some light.
rFactor
How do I find out what is blocking my ports? I am on Windows 7 x64 and trying to run Minecraft on port 25565, which worked yesterday, but not today. I have not installed any new software.
I have tried disabling Windows firewall, and I previously added two days ago a port forwarding setting to my modem. Since it worked yesterday I don't think it has to do with my ISP.
Ryan Matthews
You can see what applications are using what ports by running the following in command prompt
netstat -anobv
Once you find out what program is holding the port, if it is not important you can kill the process from task manager.
Something I have noticed is that minecraft will sometimes not shutdown all the way and the java program is running in the background. I have to kill the java process from task manager.