AT&T NAT Type Settings Guide
Configure your AT&T gateway for Open NAT and optimal gaming performance
AT&T Tip: IP Passthrough mode is the best option for gaming if available on your plan. It bypasses AT&T's NAT entirely.
AT&T Gateway Models
Different AT&T gateways have varying gaming capabilities
BGW320 (Fiber)
Gateway/Router Combo- WiFi 6 support
- Advanced firewall
- IP Passthrough mode
Latest AT&T Fiber gateway with best gaming features
BGW210 (Fiber)
Gateway/Router Combo- Dual-band WiFi
- Port forwarding
- DMZ support
Older fiber gateway, still capable
NVG589/NVG599 (DSL)
DSL Gateway- Basic port forwarding
- WiFi support
- Limited features
DSL service, lower speeds
Configuration Steps
Access AT&T Gateway
- 1.Connect to AT&T network (wired or WiFi)
- 2.Open web browser
- 3.Go to 192.168.1.254
- 4.Login with device password (on gateway label)
Enable IP Passthrough (Recommended)
- 1.Go to Settings → LAN → IP Passthrough
- 2.Set IP Passthrough Mode to "DHCPS-fixed"
- 3.Select your gaming device
- 4.Save and restart gateway
This gives your device a public IP (NAT Type 1)
Configure Port Forwarding
- 1.Navigate to Settings → Firewall → NAT/Gaming
- 2.Click "Add New"
- 3.Enter device info and ports
- 4.Enable and save settings
Gaming Port Configuration
| Platform | TCP Ports | UDP Ports |
|---|---|---|
| Xbox | 3074 | 88, 500, 3074, 3544, 4500 |
| PlayStation | 80, 443, 3478-3480 | 3478-3479 |
| Nintendo Switch | 6667, 12400, 28910 | 1024-65535 |
| PC Gaming | 3074, 27014-27050 | 3074, 27000-27031 |
AT&T Smart Home Manager App
The Smart Home Manager app provides easier access to many settings
Gaming Features in App:
- • Device prioritization
- • Gaming mode for QoS
- • Port forwarding setup
- • Network usage monitoring
Download: Available on iOS App Store and Google Play Store
Troubleshooting Common AT&T Issues
Cannot access 192.168.1.254
- Check if connected to AT&T network
- Try 192.168.0.1 on some models
- Reset gateway if needed
- Use ethernet connection
IP Passthrough not available
- Check if you have business plan
- Some residential plans block this
- Use port forwarding instead
- Contact AT&T support
Port forwarding not working
- Disable AT&T Smart Home Manager blocks
- Check firewall settings
- Ensure device has static IP
- Try DMZ as last resort
AT&T Gaming Optimization Tips
Use 5GHz WiFi
Less congested than 2.4GHz, better for gaming
Enable QoS Gaming Mode
Prioritizes gaming traffic in Smart Home Manager app
Position Gateway Centrally
Better WiFi coverage and signal strength
Update Firmware
AT&T pushes updates automatically, but check settings
AT&T Fiber vs DSL Gaming
AT&T Fiber
- • Symmetrical upload/download speeds
- • Lower latency for gaming
- • More advanced gateway features
- • Better NAT type options
- • IP Passthrough usually available
AT&T DSL
- • Slower speeds, higher latency
- • Limited gateway features
- • Basic port forwarding only
- • May struggle with multiple devices
- • Consider upgrade to fiber