Open extra ports on firewall?

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Hi,

I'm using the preconfigured firewall that comes with CentOS 5. I configure it with system-config-securitylevel-tui, close all ports except SSH, and then open only the ones I need.

Right now, on one of my desktops, I've installed AMSN, which requires opening a series of ports. I've configured the app to use ports 7000 to 7010 (TCP and UDP). When running system-config-securitylevel-tui, the last line enables to define custom ports, not mentioned elsewhere in the menu. So, for example, when I want to add port 6891 for tcp and udp, I write an entry like this:

6891:tcp 6891:udp

But what's the syntax for several ports? I tried this:

7000-7010:tcp 7000-7010:udp

And then, 'service iptables status' gives me this:


10   ACCEPT tcp  --  0.0.0.0/0   0.0.0.0/0   state NEW tcp dpt:4662
11   ACCEPT udp  --  0.0.0.0/0   0.0.0.0/0   state NEW udp dpt:4672
12   ACCEPT tcp  --  0.0.0.0/0   0.0.0.0/0   state NEW tcp pts:7000:7010
13   ACCEPT udp  --  0.0.0.0/0   0.0.0.0/0   state NEW udp pts:7000:7010
14   ACCEPT tcp  --  0.0.0.0/0   0.0.0.0/0   state NEW tcp dpt:22
15 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited

Does that mean that I have opened ports 7000 to 7010? Or only ports 7000 and 7010? I'm not quite sure how to read this.

Cheers,

Niki
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