Find specific port using command prompt

Question

Is it possible to find specific port using command prompt? I want to use the exec command in php to check if a port is open. The fsockopen function in php is very slow so i wanna try to use the cmd to check the port and see if that works better. I want to find if port 7878 is open.

I do not wish to download any softwares, I only want to know if it's possible to do it directly in cmd. And if its possible i want to know how the command for it

Possible duplicate of [Checking if port is open](http://stackoverflow.com/questions/10901157/checking-if-port-is-open) — Niall Cosgrove, May 16 '16 at 00:04
No it's not because he use telnet and i do not wish to download any softwares — Tim Levinsson, May 16 '16 at 00:52
@user3055512 there is another answer on that question that applies netstat which is available with all Windows. Try that — Jeff Puckett, May 16 '16 at 01:00
do you need to check localhost port or any other external resources ports? — Wizard, May 16 '16 at 01:18

score 2 · Answer 1 · edited May 23 '17 at 12:07

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i do not know about php code but in network we using : cmd->telnet [domainname or ip] [port]

i strogly recomended not to use exec in php and evenlook here

so i found this hope help you

here (may be slower but safer)

edited May 23 '17 at 12:07

Community

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answered May 15 '16 at 23:51

hamid

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But doesnt that requires to download telnet? I tried to use telnet in cmd and the command was not recognized – Tim Levinsson May 16 '16 at 00:47

Samuel · Answer 2 · 2016-05-16T01:12:08.733

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You can use netstat:

netstat -na | find ":< port number >"

To find a foreign port you could use:

netstat -an | findstr ":N[^:]*$"

To find a local port you might use:

netstat -an | findstr ":N.*:[^:]*$"

edited May 16 '16 at 01:12

answered May 16 '16 at 01:01

Samuel

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Thanks. But that returns like 100 rows. If i use exec in php to echo this it will display all these rows on the page so it would be better if it would return "Open/Closed" or "Online/Offline" or "0/1" or something like that – Tim Levinsson May 16 '16 at 01:07
@user3055512 Updated. Prepend ":" before port number to narrow your search results – Samuel May 16 '16 at 01:12

Find specific port using command prompt

2 Answers2