Is there a way to tell if a port # is open?

SurferdudeHBSurferdudeHB Posts: 199Member ■■■□□□□□□□
Just wondering if you can test that, thanks.


  • hypnotoadhypnotoad Posts: 915Banned
    Yes. Assuming you're talking about a Windows machine, go to start > cmd > and type "netstat"
  • maumercadomaumercado Posts: 163Member
    in a linux machine is netstat -ltpu or -lntpu

    the n is for number without n shows you the name of the service running!
  • nelnel Posts: 2,859Member ■□□□□□□□□□
    yep netstat -a
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  • TherhinoTherhino Posts: 122Member
    could always telnet to the port
  • itdaddyitdaddy Senior Member Posts: 2,088Member ■■■■□□□□□□
    Better yet
    go to and download the program n-M-a-p (nnnnnmap)
    and do a scan on your LAN's ip address and you can see allyour ports
  • networker050184networker050184 Posts: 11,962Mod Mod
    If you are talking about on a Cisco router you can use "show ip sockets" on some devices and on others you can just use "show udp/tcp."
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  • itdaddyitdaddy Senior Member Posts: 2,088Member ■■■■□□□□□□
    I mean using N - Ma -p from a remote machine to the device.
    you can run n ma -p on your local just shows a nice
    list of what is going on...
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