[Soekris] Soekris-tech Digest, Vol 57, Issue 3
soekris at arg.me.uk
Tue Nov 4 10:00:47 UTC 2008
> From: andyk365 <andy at oem-router-solutions.co.uk>
> Subject: Re: [Soekris] PCI ADSL modem.
> We supply the ADSL2+ card you're talking about in the UK now. It presents as
> a realtek ethernet NIC and as far as we are aware works well with xBSD.
> You can check it out at http://www.oem-router-solutions.co.uk
> http://www.oem-router-solutions.co.uk - if you have any questions you need
> answered reply to this post or you can emailus directly at
> support at oem-router-solutions.co.uk
Presenting as an ethernet NIC does neatly solve the OS compatibility
issue, but unfortunately it also defeats my main reason for wanting an
internal card in the first place!
My main objection to external routers is that they swallow up the one IP
address that you get with an ADSL line, so you then have to play games
with complex NAT/port-forwarding setup on the router to run any services
on a host behind it. This is tedious to set up and worse still to
maintain (ever found yourself wanting to set up a new service back at base
when logged in from 1000s of miles away?), and still doesn't work properly
for some applications.
Some routers (and maybe your device??) do give a way round this: they will
map PPPoA on the ADSL line to PPPoE on the ethernet side, allowing the
connection from the ISP to be terminated at the host, assigning the public
IP address directly to the host PC, like a traditional modem connection.
However, most routers don't do this, and those that do rarely make it
clear in their documentation: they all claim to do PPPoA and PPPoE, but
what they usually mean is that they can do one or the other of these on
the ADSL line (by PPPoE they mean PPPoE over an RFC1483 bridged link), and
not the configuration I want where there is PPPoE on the _local_ ethernet
piped to PPPoA on the ADSL side. The only ones I have found so far are
the AVM "Fritz!" range, and also Alcatel/Thomson devices that can do a
similar trick with the rather less satisfactory Microsoft PPTP instead of
I'm aware that this problem doesn't apply in places where direct PPPoE
connections are widely available: here in the UK, 99% of ISP connections
are PPPoA only.
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