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Old 06-08-2006, 08:58 AM   #1
Registered: Sep 2005
Location: Japan
Distribution: CentOS 5.2 / Fedora Core 8
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How to open a TCP Port

Hello People

I have a question, I want to use the TCP Port 24800, does anybody know how to open this port in order to use the sofware Synergy.

Regards from Japan

Old 06-08-2006, 09:19 AM   #2
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If the software is written to listen on any particular port, then there is nothing for you to do. If your software is not working, it may be that traffic on that port is blocked by a firewall somewhere, or another process is already listening on that port.

If you are talking about the SYnergy package that allows multi-host dekstop integration, I assume you have a second computer to try accessing the port from, as a diagnostic measure. Try telneting from another computer to the computer listening to port 24800.

telnet 24800
(Substitute the actual IP of the target host).

If the connection is accepted, then the port is open with a listener. If it is refused, there is no process listening. If it times out, then there is probably a firewall intercepting the connection, and the problem becomes a firewall issue. If the connection is accepted, type 'Ctrl-]', then 'close', to close the connection gracefully.

Hope this helps.

--- rod.
Old 06-08-2006, 09:34 AM   #3
Registered: May 2005
Location: uk - Reading
Distribution: slack 10.2 kde 3.4.2 kernel 2.6.15
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It depends on your hardware/software set up.

Can you describe your set up.
Is the device that you wish to communicate with on the local Lan ?
If not is your pc directly connected to the internet or is it on a Lan connecting to the internet via a gateway routing device.If so the router will have to forward traffic comming in on your port of interest to your pc.

What firewall are you running if any ??
I assume you have one as you are asking to activate a port.
The firewall will have to allow traffic in on your port of interest.

Its hard to be more accurate without more info.
Old 07-01-2006, 05:15 AM   #4
Registered: Oct 2005
Posts: 116

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If No firewall is there in your environment whenever you install synergy and it will start and opens the port


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