SpeedTouch 780WL setup

This page describes various aspects how to make good use of the SpeedTouch 780WL modem

Configuration backup
Backup user configuration and other user files
Firmware upgrade
How to upgrade the firmware using Linux
DMZ interface
How to add a DMZ interface
Make sessions persists a link change
Or why open connections "randomly" break
User management
Notes on how the SpeedTouch manges users
Alternative WAN connection
Enabling the optional use of an external modem
My configuration
My complete configuration (almost)