How do I change firewall settings?

[blonde56]

I am running FC4 w/ KDE
I need to change firewall settings to allow interface using synce and my PDA (Axim).
I an using the following sequence--
(root) #dmesg
I receive several lines... ending with
usb 2-2.2: new full speed USB device using uhci_hcd and address 18
ipaq 2-2.2:1.0: PocketPC PDA converter detected
usb 2-2.2: PocketPC PDA converter now attached to ttyUSB0
#synce-serial-config /dev/ttyUSB0
You can now run synce-serial-start to start a serial connection.
#synce-serial-start
Warning!
You have firewall rules that may prevent SynCE from working properly!
synce-serial-start is now waiting for your device to connect

I then open new session as @me
$pkill dccm ; pkill vdccm
$vdccm -d 3 -f
[main:1047] Running in foreground
[vdccm_run_scripts:192] Running script: /home/dragon/.synce/scripts/trayicon.sh start

return to root
#synce-serial-start
Warning!
You have firewall rules that may prevent SynCE from working properly!
synce-serial-start is now waiting for your device to connect

I need to find out where (and how) to change the settings.
TIA!

[HaydnH]

Try running "service iptables stop" to stop the firewall and re-running "synce-serial-start" - do you still get the warning?

Remember to restart the firewall with "service iptables start" after the test.

[blonde56]

Thanks, I was just jumping on to say I got connected.
Gave up & went to gnome and changed firewall to add other ports: ttyUSB0:tcp
Just couldn't find where to adjust in KDE...
Back on my regular desktop now.
I haven't tried sync yet, but I can see the files & add/ remove fine.
Thanks again for your help.