Thought this might help a few struggling souls out there:
I am running W2K through a Speedtouch 570 wireless ADSL modem and just got it working with Contivity VPN client. When first set up on ADSL with Bigpond support you cannot get a VPN connection, and the support "tech's" will not give any info on VPN.
Firstly get your dos command prompt ("Start" => "Programs" => "Accessories" => "Command Prompt")
- Type "telnet 10.0.0.138" (general IP address of the modem)
- You will be prompted for your username, type it then .
- You will be prompted for your password if it has been set up, type it then
- Type "nat unbind application=ESP port=1"
- Type "nat unbind application=IKE port=500"
- Type "saveall"
These commands are all described in the CLI Reference Guide (Command Line Instruction) available from the manufacturers website. For what it's worth, I gaurantee this will work on the 570 and probably every other Speedtouch modem. No other changes whatsoever should be needed on your computer or VPN client.