Jake Bullet wrote:

> I'm looking for some help setting up a VPN between a linux server and
> Windows2000 client.
> However there seems to be absolutly no documentation on anything and I'm
> awfully confused. If there are some docs, where can I find them?

Have you looked in the mailinglist archive?
(http://l2tpd.graffl.net/threads.html)

Because I recently posted a message about this. See:
http://www.jacco2.dds.nl/networking/freeswan-l2tp.html

> When I try running l2tpd I get the following message
> "This binary does not support kernel L2TP."

It's not really an error. I guess it's more like a reminder
that one day L2TP support should perhaps be in the kernel.

> How do I setup or disable authenication? What usernames are they based
> on? The linux box's users?

PPP authenticates through the file /etc/ppp/chap-secrets or
pap-secrets. You can also authenticate users with Linux
accounts if you specify 'login' as one of the pppd parameters
(man pppd). Perhaps you can also use other authentication
mechanisms (PAM). Note that L2TP has its own authentication too,
but I am not sure if Windows makes use of it.

> Client                                              Server
> Virtual 10.0.0.2 ---------------PPP---------------- 10.0.0.1
> Link             ---------------L2TP---------------
> Real   123.0.0.2 --------------UDP/IP-------------- 213.0.0.1
> 
> Is there something I'm missing from this understanding?

Yes, do you want encryption or not? If you use this setup,
there will be no encryption unless you use MPPE/MS-CHAP
as protocols for PPP. This is what PPTP uses so you might
just as well go PPTP all the way:
http://opensource.lineo.com/poptop/

Or you could tunnel it all through IPSEC (i.e. FreeS/WAN
on the Linux server). See the link mentioned at the top.

Jacco
-- 
Jacco de Leeuw                         mailto:[EMAIL PROTECTED]
Zaandam, The Netherlands           http://www.jacco2.dds.nl
Good guys don't finish last.
Good guys win before the race has even started.

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