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Re: ADSL2+ Modem-Router with more then one IP

On Sat, Dec 29, 2007 at 04:02:27PM +0100, Michelle Konzack wrote:
> for a new project I have gotten an ADSL2+ offer of a french ISP where I
> can have up to 16 fixed IP's and have 22,8/1,8MBit plus two analog
> telephone lines (over VoIP).
> Now there is a problem, because all ADSL-Modem-Router I know, can handle
> only one IP and portforwarding from only one IP.

most that i know of can do normal routing, and allow you to disable

i.e. it should just work.

> And the Router provided by the ISP assum, you connect ONLY a switch to
> the ADSL-Modem-Router and then connect your Servers and Workstations
> directly...  --  For me a thing of impossibility for security reasons.
> I have tried to put an ADSL-Modem-Router in Modus "Modem with PPPoE" and

i guess you mean "bridge mode".  that's how i have my ADSL set up at
home.  the modem in dumb bridge mode, with my linux gw running pppoe,
routing, firewalling, squid, dns, MTA, and everything else.

> then let my Debian Router (4.0) let do the stuff, but the ppp(oe) stuff
> crashs all the time and has created 40-80 ppp-Devices and then confused
> my internal network routing table, so I was not more able to connect via
> PCMCIA-GSM card to solv the problem.  The router had to be reseted hard.

dunno what you're doing, but i've been running numerous linux ADSL gateways
similar to what i describe above for the last several years.  never had
a problem.

> Does anyone of you know an ADSL2+ compatible Modem-Router (Annex A, DSL
> over POTs) which support up to 16 fixed IP's AND has 2 connectors for
> analog Telephones?

dunno if they have FXO/FXS ports for phones, but you could try one of
the many little ADSL routers that can run openWRT[1] (or one of the many
variants). e.g the WRT54G, or one of the dozens of clones on the market.

[1] http://en.wikipedia.org/wiki/Openwrt

OTOH, it should be possible to just disable NAT on your existing
adsl modem/router and have it Just Work.


craig sanders <cas@taz.net.au>

"With so many mindbytes to be downloaded, so many mental codons to be
 replicated, it is no wonder that child brains are gullible, open to
 almost any suggestion, vulnerable to subversion, easy prey to Moonies,
 Scientologists and nuns.  Like immune-deficient patients, children are
 wide open to mental infections that adults might brush off without effort."
            [Richard Dawkins, "Viruses of the Mind"]

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