You may use the "Firewall" tool from the Security Center to remotely configure your computer firewalls (Windows XP / SP2 or greater OS. "Remote Registry" service must be up and running on these computers).

For doing so, open the "Computers" menu, then "Security Center". You can also make a multi-selection from the right view on the desired computers, then right click "Security Center". Computer selection can also be modified by clicking on the
button.
- Firewall : General information
In this tab, you can access the firewall parameters for the selected computers, depending on the profile : domain, standard (or private from Vista OS), public (from Vista OS).
You can select one ore more computers, then apply the desired action by clicking on the
button, or by right-clicking. Example: "Firewall status", "Turn on".
To be immediately taken into account, a change may required restarting "Windows Firewall" service on the remote computer.
Finally, it is also possible to access the firewall properties of a computer by double-clicking on the right line.

This tab allows you to display existing rules on the selected computers, depending on the profile, on the type (program/port) or on the traffic (inbound/outbound).
To create a rule :
- Select one ore more computers (no selection in the list = "All the computers of the list").
- Click the
button, or make a right click, then "Add a rule", "Program" or "Port" depending on your needs.
- Fill in the required information.
To be immediately taken into account, creating/modifying/deleting a rule may required restarting "Windows Firewall" service on the remote computer.
Finally, it is also possible to access the properties of a rule, by double-clicking the selected rule.