Firewalls And Hosting Games For Warcraft, WoW, Diablo and Starcraft

Firewall and ports mean much if You wan't to host games.

Firewall may cause incoming data from reaching Your computer so other player will be unable to joint Your game.

Firewall can be anywhere, as software (windows firewall or some 3rd party firewall) and as hardware (modems/routers).

Here are port for Warcraft, World of Warcraft, Diablo and Starcraft. This ports need to be unblocked so games will good.

Diablo and Warcraft II Battle.net Edition:
Allow port 6112-6119 TCP and UDP out and in



Diablo II:
Allow port 6112 TCP out and allow established sessions in
Allow port 4000 TCP out (realm games)
Allow port 4000 TCP out and in (hosting open games only)

StarCraft:
Allow port 6112 TCP and UDP out and in

Warcraft III:
Allow port 6112 TCP out and allow established sessions in
Allow port 6112 TCP in (hosting custom games)
Allow port 6113-6119 TCP out and in (hosting custom games if you have changed the default port in the Options/Gameplay screen)

World of Warcraft:
Allow port 3724 TCP out and in for Game
Allow port 3724 UDP out and in for Voice Chat

Blizzard Downloader:
Allow port 6881-6999 TCP and UDP out and in
Allow port 3724 TCP out and in
Allow port 6112 TCP out and in
http://us.blizzard.com/support/article.xml?articleId=21077

Firewall Configurations

Software Firewalls

You may recognize names such as Norton Internet Security, McAfee Personal Firewall Plus/Express, ZoneAlarm, Sygate, Panda, and many others. These security programs act as firewalls that can block single programs or specific ports from the network. Here are some links to popular software firewalls that may help you:

General configuration: http://www.firewalling.com/routers.htm
Black Ice: http://us.blizzard.com/support/article.xml?articleId=21108
Sygate: http://us.blizzard.com/support/article.xml?articleId=21207
ZoneAlarm: http://us.blizzard.com/support/article.xml?articleId=21197
Windows XP Firewall
Windows Vista/7 Firewall

For the following firewalls, follow the general steps and add the ports from above into the appropriate field:
Mac OSX Firewall: http://us.blizzard.com/support/article.xml?articleId=21231
McAfee Personal Firewall: http://us.blizzard.com/support/article.xml?articleId=21295
Norton Internet Security: http://us.blizzard.com/support/article.xml?articleId=21293
Ubuntu/Linux


Hardware Firewalls

Virtually all routers available today have firewall functions to protect users from outside access. In addition to this, DSL and Cable modems may have firewall functions as well. These links will give you information on how to configure your products. For port numbers and information, please see above.

Belkin Networking Support: http://www.belkin.com/support/download.asp?category=9〈=1&mode=
D-Link Port Forwarding: http://support.dlink.com/faq/view.asp?prod_id=1005&question=port
Linksys Port Forwarding: http://linksys.custhelp.com/cgi-bin/linksys.cfg/php/enduser/std_adp.php?p_faqid=568
Motorola Networking: http://broadband.motorola.com/consumers/support/default.asp?supportSection=HomeNetworking
Netgear Port Forwarding: http://kbserver.netgear.com/kb_web_files/N101145.asp
USRobotics Support: http://www.usr.com/support/s-main-menu.asp
ZyXEL Support: http://www.zyxel.com/support/supportnote.php

List of default usernames and passwords for routers:
http://www.phenoelit.de/dpl/dpl.html

For router port forwarding go to portforward.com

Source forums.battle.net