New Zealand ADSL Mailing List


ADSL routers with DHCP spoofing? Anyone?

From: Neil Gardner <neil_at_neilnz.com>
Date: Tue, 7 Oct 2003 17:00:24 +1300
Message-ID: <000201c38c87$896d9680$6663a8c0@delta>

In fact, any way to get a public IP presented to the device behind the
ADSL router? (Except PPTP - the firewall I want to put behind the router
has no PPTP client).

So does anyone know of a solution that is tested to work? I have a
Speedtouch 510 **coughPRO** and the DHCP spoofing configs appear to
'take' but the DHCP address supplied to the firewall (and Test PC) is a
10.0.0.x from the DHCP server, not the public IP address... In fact I am
not even convinced that in the DHCP spoof mode that it's even
negotiating with the ISP.

I also have a Cisco827 I could use as the ADSL router, but I don't know
enough about them to know whether it will let me present the WAN IP to
an internal machine... I'm guessing not though - I could NAT everything
to an internal IP, but again, It's NAT.

I know there are a number of boxes I could use with DMZ or default
server functionality that SHOULD present all incoming traffic to the
Firewall, but they are still doing NAT which I want to get around.

So if anyone has any solutions to this problem, or has used the ST510
(or pro - the hack downgrade is an incredibly nasty procedure I don't
want to do unless I have to) in this mode and made it work, PLEASE get
in touch with me. If there's a bunch of private responses, I'll
summarise.

Cheers - Neil Gardner

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Received on Tue Oct 7 17:00:46 2003

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