Security software and hardware systems are designed to control your computer's incoming and outgoing connections. You may need to adjust these features to allow access to the game servers. For assistance in configuring security software, please refer to the documentation provided with the software, or consult the manufacturer's website.
In some situations, disabling security software temporarily may provide a workaround for connectivity issues. For assistance with this, please visit our Disabling Security Programs guide.
|TCP PORTS||UDP PORTS|
|Battle.net Desktop Application||80, 443, 1119 and 6881-6999||80, 443, 1119, 6881-6999|
|Blizzard Downloader||1119, 1120, 3724, 4000, 6112, 6113, 6114, 6881-6999||1119, 1120, 3724, 4000, 6112, 6113, 6114, and 6881-6999|
|Diablo II||6112 and 4000||None|
|Diablo III||80, 1119, and 6881-6999||1119, 6881-6999|
|Hearthstone||1119, 3724||1119, 3724|
|StarCraft II||1119, 6113, 1120, 80, and 3724||1119, 6113, 1120, 80, and 3724|
|Warcraft II Battle.net Edition||6112-6119||6112-6119|
|Warcraft III||6112 (Default) and 6113-6119||None|
|World of Warcraft Launcher and Game Client||3724, 1119, 1120, 4000, 6112, 6113, 6114, 80, and 6881-6999||3724, 1119, 1120, 4000, 6112, 6113, 6114, 80, and 6881-6999|
To configure a firewall for your specific operating system, select it below:
Windows XP Service Pack 3
Service Pack 3 is required to be installed to run Blizzard games on Windows XP. Follow the steps below to start the installation process:
- Click Start > Control Panel > Security Center > Windows Firewall.
- Under the General tab, be sure you have On (recommended) selected:
- Click the Exceptions tab.
- Click the Add Port... button.
- In the Add a Port dialog add port 3724 as follows:
Name: Blizzard Downloader
Click OK. This will return you to the Exceptions tab
- Click Add Port... to add another port.
Repeat the steps above for each port you need opened. These ports should be added to the firewall:
- 6112 TCP
- 1119 TCP
- 1120 TCP
- 4000 TCP
- 6113 TCP
- 6114 TCP
- 4000 TCP
- 6881-6999 TCP (The Windows Firewall doesn't have a feature for adding port ranges, so each of these ports will need to be added individually).
Your firewall should now allow traffic on the necessary ports for proper Blizzard Downloader operation.
- Click Start > Control Panel > System and Security > Windows Firewall.
- On the left frame, click Advanced Settings > Select Inbound Rules.
- On the right frame, click New Rule...
- Select the Port radio button and click Next.
- Select the TCP radio button.
- In the Specific Local Port field, enter 3724. Click Next.
- Select the Allow the connection radio button. Click Next.
- Make sure Domain, Public, and Private boxes are all checked. Click Next.
- Enter any name for this rule. Click Finish.
- Repeat the steps 3-9 for TCP port numbers 1119, 1120, 4000, 6112, 6113, 6114, and 6881 - 6999. If you wish to use Voice Chat, also repeat steps 7-13 for UDP port numbers 1119 and 3724.
You can now close all the windows you opened. Your firewall should now allow traffic on the necessary ports for proper Blizzard Downloader operation.
Mac OS X
The firewall in Mac OS X is an Application Firewall, which allows you to control connections on a per-application basis, rather than a per-port basis. This makes it easier to gain the benefits of firewall protection and helps to prevent undesirable applications from taking control of network ports that have been opened for legitimate applications.
- From the Apple menu, choose System Preferences > Security.
- Click the Firewall tab.
- Unlock the pane by clicking the lock in the lower-left corner and entering the administrator username and password.
- Click Start to enable the firewall.
- Click Advanced to customize the firewall configuration.
- Check the Automatically allow signed software to receive incoming connections box.
- Click OK.
Blizzard does not directly support proxies, firewalls, or routers. You may need to contact your ISP or network administrator for assistance if you have opened the correct ports but still cannot connect. For assistance with configuring your router or firewall, contact the manufacturer. PortForward.com is a useful third-party site that contains port forwarding walkthroughs for most router models.
Article ID: 300479