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How to check if remote port is open?

by | 2 February 2014 | Linux | 0 comments

Once upon a time I wanted to check if some ports are open. The network I wanted to check was at my office, and when I forwarded some ports on my Mikrotik I wanted to be sure if I did it correctly. So I started to find solution in the internet and I found that netcat can do it:

for localhost:



for remote host:

After this command you will get an answer 0 or 1.

0 means port is open

1 means port is closed


If you don’t have netcat on your Ubuntu, you can easy install it by command:


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