[_] ADSL modem & multiple WAN IPs
Oliver Humpage
oliver at watershed.co.uk
Wed May 30 22:02:14 BST 2007
We've got an ADSL backup line, and I've just got a small block of IPs from Plusnet (who really did have excellent customer service). What I want is to create a network where I can plug in a piece of kit, give it one of these public, routable IPs, and it's on the internet. I currently have a Dlink DSL-300T. However, although this is possible with most ADSL modems for a *single* IP (i.e. just switch off the NAT), it seems that multiple IP addresses present a problem - the modem only thinks it's getting one WAN address, and that's all it's prepared to handle. I could just put the modem into "bridge" mode, but then any connected device has to use PPPoE to authenticate, which isn't fun. Is my understanding of that correct? I also don't want to use NAT at all, not even "static" nat (at least, not visibly) - for various reasons, not least of which is I like servers having the IP address they have in the real world. So, anyone know of any hardware which will pass-through multiple routable IPs from an ADSL line, without me building a *nix box with an ADSL card in it (or putting two routers back-to-back and double-natting)? Thanks, Oliver.