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OpenL2TP: Difference between revisions
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__NOTOC__<indicator name="L2TP">[[File:Menu-L2TP-Relay.svg|link=:Category:L2TP Handover|30px|Back up to the L2TP Handover page]]</indicator>
==Setting up OpenL2TP==
This page documents my experiments setting up an LNS for my
For the LNS, I used [http://www.openl2tp.org/ OpenL2TP] running on Linux ([http://www.debian.org/ Debian] 'squeeze'). I did some experiments with xl2tpd as well.
The OpenL2TP [http://www.openl2tp.org/downloads download page] offers version 1.8, which compiles straight out of the tarball.
This is the configuration I'm
peer profile create profile_name=a.gormless
===Musings===
PPP over GPRS connections is a bit, well, weird. The PPP connection that pppd on your laptop establishes is not all the way through to your LNS as you might expect. It isn't even terminated in the mobile
The proxy authentication username that the LAC presents is a UK 07xxx phone number. It also presents a CHAP authentication ID, challenge and response. These are ignored unless you enable allow_ppp_proxy.
The 'calling number' and 'called number' in the incoming call request are the SIM's ICCID.
[[
===Things to do===
Work out how to identify individual SIMs and supply the correct IP address to each one. If you set 'auth_none' to 'no' in the ppp profile then PPP forces the other end to
I've got this working, in as much as it allows entries in the LNS's chap-secrets to contain IP addresses and the correct one is passed to the modem. However (at least on pppd 2.4.5 with openl2tp 1.8) I haven't found a way to set the IP address on the LNS's end of the link. If you use the '-- local:remote' syntax in chap-secrets it picks up the remote IP but not the local one.
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