Opening Windows Firewall Ports

Windows Firewall configuration is required to allow game server connections and administrative access. This guide uses FiveM server ports as an example, but the process applies to any game server or application requiring port access.

Example Port Configuration (FiveM)

This guide demonstrates configuration using FiveM's standard ports. Replace these with your application's required ports:

Port	Protocol	Purpose	Required
30120	TCP/UDP	Player connections	Yes
40120	TCP	txAdmin web interface	Optional

Creating Inbound Rules

Initial Rule Setup

Navigate to Control Panel > System and Security > Windows Defender Firewall
Select Advanced settings
Click Inbound Rules in the left pane
Right-click Inbound Rules and select New Rule

TCP Rule Configuration

Select Port and click Next
Select TCP
Select Specific Local Ports
Enter 30120 in the port field
Click Next
Select Allow the connection
Click Next
Select appropriate network types (default settings work for most configurations)
Click Next
Enter a descriptive name such as "FiveM TCP"
Click Finish

UDP Rule Configuration

Repeat the above steps with these modifications:

In step 2, select UDP instead of TCP
In step 10, use a name such as "FiveM UDP"

Additional Port Rules

Create separate rules for port 40120 using the same process if txAdmin web access is required.

Disable UDP for RDP - Enhance RDP security on Windows servers
Windows RDP Connection Guide - Connect via Remote Desktop
Connection Troubleshooting - Diagnose connectivity problems
FiveM Custom Domain Setup - Configure DNS for game servers

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