I have a work laptop running Windows XP Pro and use Nortel Contivity to access work via a VPN. The laptop always worked fine on the TCL cable connection and still works fine via my vodafone 3G mobile (tethered) and random WiFi hotspots e.g. koru clubs around the country.
Since signing up to Vodafone Naked ADSL at my new address (Schnapper Rock, Albany, Auckland) I have had no joy connecting via my home connection which uses the vodafone supplied Echolife HG556a ADSL modem/wireless router. I can still access the e-mail fine and can still access the work VPN via mobile etc but no luck at all via the home modem/router. Neither my work helpdesk (only supports the laptop) or the vodafone helpdesk ("VPN is unsupported by our helpdesk - talk to your work helpdesk") were able/willing to help beyond suggesting the normal things i.e. DMZ and/or NAT/Virtual Server/Port forwarding etc.
Things I have tried:
1. Opened the ports as recommended by work (and portforward.com). This did not work so I closed them again.
2. Used the built in 'applications' feature from the router configuration page (and the VNC application). This opened the exact same ports as those I had previously opened manually as recommended by work so I was not surprised when this did not work. I closed them again.
3. Set up my laptop as being in the DMZ. To my mind this should have been a fool-proof solution but again did not work.
4. Set up my laptop with a static IP rather than DHCP assigned (although this is not something I do when connecting via public wireless obviously). I then re-tried all of the above again without success.
5. Connected my laptop to the router both via wireless and Cat 5 - again, no joy.
Looking online it would appear that the router supports VPN pass-through so I am at a loss. I did also find online a few comments from other pers that could not access their VPN using the vodafone supplied router so I wonder if it is a common problem (although am sure that there would have been sufficient backlash by now for vodafone to have done something about it if it effects all users).
Finally I should note that while I have Vodafone Naked DSL I am not in the 'Red Zone' so one assumes that I am provisioned through someone else's cabinet/exchange. Not sure how/why this might be a problem but thought it worth mentioning.
If anyone can help or offer some advice it would be most appreciated. Final fallback seems to be buying another wireless modem/router but this is obviously not a step I want to take, particularly with no guarantee that this will work either due to the issue being somewhere in the link rather than the echolife router.....