Internet router firewall blocking valid traffic
4.5
The firewall is preventing legitimate apps or services from working.
Symptoms
- Online games won't connect
- VPN fails
- Work apps blocked
Possible Causes
- Strict security level
- Missing port forwarding
- False positive detection
Step-by-Step Fix
1
Lower Firewall Level
Try "Medium" or "Low" instead of "High".
2
Add Port Forwarding
Manually open the ports required by the app.
3
Check Logs
See which rule is blocking the traffic and disable it.
When to See a Technician
If you are unsure which port to open, check the app's official support page.
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