How can I open specific ports in order to use a SDK for a project?
I have already tried netcat, but it seems that you can only listen to a specific port or open a specific port if you have a hosting website.
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2Please clarify your question. Are you asking how to get a server process listening on a particular port (if so, what kind of server software, etc), or how to prevent a firewall from blocking access to that port (in which case, what firewall, what's the network setup, etc)?Gordon Davisson– Gordon Davisson2018-07-22 04:15:11 +00:00Commented Jul 22, 2018 at 4:15
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1 Answer
To open a port and keep listening on it, on macOS this should be working:
nc -lk 8080
To test you can connect to the opened port by doing:
nc -vt 0 8080
To use UDP, you just need to use option -u, for example:
nc -u -lk 8080
To test you can connect:
nc -u -vt 0 8080
Output:
found 0 associations
found 1 connections:
1: flags=82<CONNECTED,PREFERRED>
outif (null)
src 127.0.0.1 port 63214
dst 127.0.0.1 port 8080
rank info not available
Connection to 0 port 8080 [udp/http-alt] succeeded!
