MX server not working after port forward

[NicoMacArthur]

when i turn NAT off it just literally disables my internet!

[Wahlamt]

when i turn NAT off it just literally disables my internet!

No NAT should be on.

[jlv]

should i turn NAT off then?

The usual configuration is NAT on the router and the modem in bridge mode. The alternative would be the modem acting as a NAT router and the router acting as a switch/wireless access point. Either way, whatever is doing NAT needs to forward the port.

[NicoMacArthur]

i guess im just unlucky then, doesent seem like theres a fix to my unknown problem haha

[NicoMacArthur]

Well i port forwarded on the thing thats doing NAT, so idk whats the issue

[jlv]

The modem is in bridge mode? Are you sure you have the correct addresses for everything?

[NicoMacArthur]

My modem does not have bridge mode enabled

[jlv]

Probably double NAT then. What kind of modem is it?

[NicoMacArthur]

the modem says its a technicolor C2100T

[jlv]

Hm. Missed where you said the modem and router were one unit. It's not double NAT in that case. Try disabling the firewall on the router.

[NicoMacArthur]

i tried and it still shows "port closed"

[NicoMacArthur]

ok i used a different port checker and it says "port filtered" which means its connecting to host but packets cant be sent due to firewall blockage

[jlv]

Do you have UDP 19800 open on both the router's firewall and Windows' firewall?

[NicoMacArthur]

yep

[jlv]

If you have the port forwarded and open on all firewalls it should be working. Try having someone connect to it. There's a good chance the port checker isn't giving good results. Hard to see how it'd even work for UDP.