Some days ago I got a new ADSL2+ connection from a new ISP(1und1). Of cource I get a hardware package with brand new 1und1 homeserver, the real product behind this name is a FRITZ!Box 7320.
The first problem was, I cant use fritzbox simultaneous as a DSL-Modem and VOIP-Gateway. I need a DSL-Modem with PPPoE pass-through function to establish the PPP-Session from a Linux-Server.
great solution was to take another DSL-Router with Modem function this was a Vodafone easybox 802 model.
I disabled all unnecessary functions like: WLAN, NAT, DHCP and other bullshit. This should be a pure and stupid DSL-Modem. This setup worked great but some websites were not accessible. This was not a firewall (iptables) or MTU/PMTUD problem.
Some interesting info and facts:
Default IP-Address: 192.168.2.1 (255.255.255.0)
Default Username and Password: root : 123456
– You cannot set routes in easybox 802 …
BTW here you can get the newest easybox 802 Firmware 20.02.231.bin: Download it!