[deepsun]

When I go to 192.168.1.1 it still asks for my login/password/2FA I created on unifi.com. Well, theoretically it's possible router can securely check those locally without WAN, by copying password+2FA init token + salt hashes locally, but I highly doubt it's the case.

[aetherspawn]

Actually that’s exactly what it does (seems), because it works fine without internet.

I say this authoritatively because I have a ‘huge’ small business deployment of like 20 UniFi devices, and the internet breaks virtually every time I change the complex routing setup. If it were not for this, my setup would be unmanageable.

I have to flip flop between unifi.com (for when I break the wifi routing) and local (for when I break the internet), but boy is having both options handy!