Transwiki:Inbound connectivity under 3G Datacard

This is a guide on circumventing the Vodaphone 3G Datacard paradox, After reading this guide I am confident you will beable to have a direct access remotely to a that is machine connected to the 3G datacard (via vpn),

Lets begin... At the core of it, you find two problems firstly vodaphones configuration of the ISP, is setup to transparently Nat your connection out of over a local network with just a couple of external ip address's, the result of that is, you can not have any tcp connection forwarded internally, and the second issue is the total non-exsistance of udp connectivity, resulting in a catastrophic failure of inbound connectivity over all, even special software designed to traverse firefalls will have no connectivity, as there dependent on udp capability.

The solution that is available:

(SUMARY)

You may of herd of a software called LoopHole available for linux and windows this purpose of this program is basically to use the fully fletched connectivity of a remote host/server, or just one that has less impeeded/stunted connectivity, to circumvent the scenario of a machine with limited connectivity such as a machine with a vodaphone/3G datacard connection.. described above, LoopHole does this by routeing packets to and from the the machine with no connectivity to the machine with un-impeeded connectivity (the server), this is done by weird prioprietry software services that run in the background and methods, and is not free, and consumes resources inside "the server", leaving you with an overhead you didn't need in the first place.

The FREE solution we will use here involves creating a PP2P/L2TP vpn tunnel to the server machine and simply enabling it a basic forwarding IP router all taffic is routed through the VPN tunnels gateway rather then the this will act as our own "Loophole".

Requirements: Static IP arrangement, is required for the server to have a "default gateway" value for the vpn server. Ip Forwarding / Router capabilitys. Router capable of forwarding ports 1729 TCP and, GRE traffic on port 43.

For Windows XP Professional (no other versions tested at present)

this guide is incomplete. good luck -ncoredump