Att — Hotspot.webui Login

If you manage AT&T mobile broadband devices (Nighthawk M1/M6/MR series, Netgear LM1200, or the older Unite hotspots), you have likely stared at the http://hotspot.webui or 192.168.1.1 endpoint.

This post assumes you are looking at the captive portal or the local admin interface. Deconstructing the att Handshake: The Quirks of hotspot.webui Authentication

Hard refresh (Ctrl+Shift+R) or clear the 192.168.1.1 cache. 4. The AT&T "SOS" Mode (Login Loop) A specific AT&T firmware bug (seen in M1 firmware 12.06.16.00 and later) causes a login loop when the device has a weak cellular signal (-111 dBm or worse). hotspot.webui login att

The UI tries to load the "Cellular Status" widget simultaneously with the login challenge. The status widget times out (waiting for the modem to respond), which crashes the session_mgr daemon. The result: You log in, see the dashboard for 2 seconds, and get kicked back to hotspot.webui/login.html .

hotspot.webui login att

curl -X POST http://192.168.1.1/cgi-bin/login \ -d "username=admin&password=YOURPASS" \ -c cookies.txt curl -X POST http://192.168.1.1/cgi-bin/reboot -b cookies.txt

You type the correct password, click login, and the page simply reloads with ?error=auth but no "wrong password" message. This is not a password error; it's a stale CSRF token. If you manage AT&T mobile broadband devices (Nighthawk

Bookmark http://192.168.1.1/start.htm instead of the domain. That bypasses the captive portal detection and forces the admin login screen.