Battlezone 1

1. Comodo Firewall Pro 3.0

after you download it and install it

two left mouse clicks on Comodo icon next to the clock

My Blocked Network Zones
Add
A New Blocked Address
A range of IP addresses

24.171.64.0 - 24.171.79.255

Apply
Apply

right mouse click on Comodo icon next to the clock

Firewall Security Level
Custom Policy Mode

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2. Sygate Personal Firewall 5.6.2808

after you download it and install it

right mouse click on Sygate icon next to the clock

Advanced Rules
Add
General (enter rule name under Rule Description)
Host (enter IP range 24.171.64.0 - 24.171.79.255 under IP Addresses)
Applications (select all)
OK
OK

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Don't use Zone Alarm Firewall with BZ cause your game will crash every 20 mins or so.

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IP's you should block are listed here.