site link :  here

Question : How Hard is this?

Answer :

 For someone who doesnt know squat about DNS, its pretty damn hard.

but for however that can understand it. it basically lets you.. 1, get free internet access when it requires money and 2, become a rocking hacker.

though the site does show some tutorials on how to do it. like OzymanDNS, written in Perl (Client and Server together 642 SLOC) by DNS guru Dan Kaminsky

the same Dan Kaminsky that first discovered this big loophole. it will pretty much give you the stuff you need to succesfully hack some must be paid first wi-fi.

like our international airport, or starbucks.. though there IS a warning for those who might want to use it.

"Circumventing the AP's access controls (that includes DNS tunneling) is most probably considered to be a crime, depending on the country you live in. I am not responsible for whatever you do with your tunnel. I am just providing two simple entries in my ISP's DNS server to let a hostname point to your server's IP."