Thank you this is really great.
also if I am logged into the server, can I do a grep for a specific port
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Question
How to find if port taken in UNIX (Solaris 9)
Hello
2 questions (UNIX Solaris 9:
How do I find available ports on a unix system.
Also if I want to see if a port is listening, to see if the service using that port has started, what is the way to do this.
Thank you:)
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Answers
If your intent is to create your own service on an open port - or to change ports for an existing service, you can refer to a list of assigned ports:services at the following links:
http://www.iana.org/assign
http://www.iss.net/securit
http://www.chebucto.ns.ca/
Any one that is not already assigned per IANA, then you can use it for your own purposes. See the ff. links for adding new services/processes.
http://docs.sun.com/app/do
http://docs.sun.com/app/do
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by: omarfaridPosted on 2007-11-28 at 08:57:40ID: 20366856
Hi,
To see if a port is currently is in use and a process is listening to it, run
netstat -an | grep LISTEN
if you look at /etc/services , you will see the well know services ports (e.g. ftp, telnet, etc).
Any port that is not in use is a free one.
To verify also, you may use telnet to test tcp ports
e.g.
telnet ipaddress tcpport
telnet 10.0.0.1 25
if you get connected then the port is in use, if you get the message connection refused then it is not running.