How do you configure the firewall when downloading the war of warcraft patch

The Blizzard Down-loader requires that TCP port 3724, 6112, 6113, 6114 and 4000 to be open.

You may also be able to find information on how to open ports on your firewall company's website, in the included documentation, or on the installation CD.

Be sure to check out the Blizzard support page for firewalls for more detailed information. the link is in the related links section.