Opening Port Windows XP firewall

To open port e.g.:22 Windows XP firewall, you have to execute the following:

netsh firewall add portopening TCP 22 SSH enable subnet

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

On packages.xml you should add line like below:

<package
        id="open-port-22"
        name="Open port 22 on windows firewall"
        revision="1"
        reboot="false"
        notify="false"
        priority="2">      
        
        <install cmd='netsh firewall add portopening TCP 22 SSH enable subnet' />
        
</package>

This is useful if you want to run a SSH server (i.e. freeSSHd), but still want to have your firewall enabled.