Mobile Wifi Hotspot over 3G.

Hi folks,

I have bought the microchip PICDEM2.net board with wifi module, I have tried connecting it to my home network but it doesn't want to play ball, thinking it might be something to do with my router possibly, not sure though.
Anyway, I have set up my phone a "Samsung Galaxy S2" as a wireless hotspot that works over 3G and managed to connect the board to this wifi network, I can then access the board via my phones web browser and try out some of the demo applications, this is really great but still kind of useless if I cannot access the web-server over the internet. With this in mind I visited "www.whatismyipaddress.com" and got the IP address that my phone is using when connected to 3G, I then used trace route on this IP address, the packet reaches the orange servers and then times out - I later found out that this is caused by orange stopping ping packets being sent, due to the cost of the reply.
Is there another way that I can detect if I can actually send a packet to my phone, I say this because I have attempted to set up a port forwarding application on my phone to forward packets from the phone to the development board but it is not seeming to be working and I have no way of telling if the packet have actually reached my phone, let alone if they are being forwarded!

Cheers,

/Pheetuz

Yes, they tend to disable traceroute (and ping) because otherwise anyone could send lots of pings to your phone (and cause a DoS attack to
your phone : ) Unfortunately I'm not very familiar with it (it may be dependant on the phone and the provider).

I tried the 'whatismyip' method in the past, but using DSL access, not using 3G access. It did work, but you need to configure the router to allow the
packets to pass (usually the firewall configured in the router will block it). You could temporarily disable the firewall - not ideal but as a test.
Also, the router needs to know which apps you want to pass from the internet into your home network. It is called 'single port forwarding' in Linksys
terminology. So, you need to choose an application (e.g. web server, which is running on your module) and specify that port and the IP addess
of the module, and put it into the router configuration. Actually you could test all this with just your laptop, and if it works, then extend it
to the module. When I tested it, it was for the purposes of 'sip phones', so I did not test using the web server port number, but rather the SIP
port number (and made the test call from a SIP phone connected via 3G). However the concept is the same so hopefully it should work.
However, all this assumes that you can get the module connected to your home wifi, as opposed to the 3G wifi.