[usagisushi]

N810, N900, N9 owner here.

Good read. I did the exact same modification to my N900; it was my internet router for several years. In those days, a mobile carrier in my country offered a relatively cheap data plan for dumb phones: unlimited data, but restricted internet connectivity with a WAP proxy. Fortunately, thanks to curl and busybox utils, I figured out that the proxy allowed CONNECT requests, and a tiny C program on my N900 was able to transparently tunnel all TCP connections to the internet.

BTW, my N900 had another mod: it featured a Type-A female port :)

[augustl]

I was a huge N9 fanboy. Wish I didn't sell mine, and that Microsoft didn't kill it :)