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 NAT. 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.

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[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

-- 
craig sanders 

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