Internet router unable to enable port filtering
4.5
The feature to block specific ports for all devices is failing.
Symptoms
- Ports remain open
- Settings won't save
- UI error
Possible Causes
- Firmware bug
- Conflict with port forwarding
- Hardware limitation
Step-by-Step Fix
1
Remove Port Forwards
Ensure no rules are explicitly opening the port you want to filter.
2
Update Firmware
Fixes UI bugs in the firewall menu.
3
Reboot Router
Ensures the firewall engine restarts with new rules.
When to See a Technician
Port filtering is useful for blocking insecure protocols like Telnet (23) or SMB (445).
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