PC on DMZ, is it safe?

[Sameer]

I just can't make COD on Open NAT no matter what configuration I do.

My PC is connected to the commhnityfibre router, that's in Bridge mode.

I've tried putting my communityfiber router on DMZ.

I'v then tried putting every single ports for COD as forwarded. 

The IPs are reserved for both my router n PC.

Nothing seems to work unless I put my PC to DMZ, and I'm not happy about it.

Ny idea how to resolve it?

[Netduma Fraser]

Presumably you're just checking the NAT on the game, if you disable the Geo-Filter before booting up the game does it appear open then?

[Sameer]

On 2/24/2025 at 12:02 AM, Netduma Fraser said:

Presumably you're just checking the NAT on the game, if you disable the Geo-Filter before booting up the game does it appear open then?

I tried doing that as well. NAT is always on MODERATE.

My setup is:

Communityfibre ONT --> NetdumaR3 --> Linksys MX5600 (Bridge Mode) --> PC (All hardwired)

I've reserved the IP addresses for Linksys and my PC.

UPNP is enabled.

I then tried port forwarding all COD ports, 1st on PC (didnt work). I port forwarded same all COD ports on Linksys router as well. That didnt work.

I also tried putting Linksys router on DMZ. that didnt work. I then rolled back.

Then finally, put PC on DMZ, then only it worked. 

I'm on Firmware v4.0.236. 

[Netduma Fraser]

Could you connect the PC via WiFi to the R3 and remove the hard connection then check if you get open with the Geo-Filter disabled please?