Configuring Windows XP firewall

To disable Windows XP firewall, you have to execute the following:

netsh firewall set opmode disable

It is enough to execute it only once, as it will survive the reboot, so you may use execute="once".

To add ports to the exception list:

netsh firewall add portopening [protocol] [port number] [rule name]

[protocol] can be TCP or UDP (remove the brackets when you insert your values).

To add a program to the exception list:

add allowedprogram program = [path] name = [name] mode = [ENABLE|DISABLE] scope = [ALL|SUBNET|CUSTOM] addresses = [addresses] profile = [CURRENT|DOMAIN|STANDARD|ALL]

You might want to check the article in the MS Windows XP TechCenter for detailed explanation.