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Old 06-09-2005, 09:41 AM   #1
LQ Newbie
Registered: Jun 2005
Location: Malawi
Posts: 1

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How go i open ports ?

I have a linux box which i use as a server (Red Hat 9) and a number of clients running WXP. I have subscribed for internet telephony and the software requires that the following ports be open:
Outgoing tcp: 7175,7176,8680,8681,8682,8685,9004,9900,19900
outgoing udp: 51200,9006

How do i go about it ? I am completely new to UNIX.
Old 06-09-2005, 09:55 AM   #2
Registered: Jan 2004
Location: Duesseldorf /Germany
Distribution: Gentoo amd64 / Debian
Posts: 226

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"open ports" have something to do with firewalls....

What firewall are you running?
If you don't know, it might well be that the answer is "none",
Linux does not need a firewall as much as Windows does, if you configure it correctly.
But I don't want to start a flamewar, and if and when a firewall is necesary is a whole other question.
Old 06-09-2005, 09:56 AM   #3
Registered: Mar 2005
Location: UK
Distribution: opensuse 12.2 x86_64
Posts: 563

Rep: Reputation: 38
Have a look at and the FAQ on


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