Thanks guys, but I now have it working, in the DMZ on a SonicWALL. The reason I need the DMZ, is that the SonicWALL is used for a site-to-site VPN to another Mitel 3300 for voice calls, and now also for the Teleworker. The usage on this is not great, so rather than having two seperate ADSL links, I only require one.