This link has been bookmarked by 144 people . It was first bookmarked on 25 Jul 2007, by ciukes ..
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breadtan"The Idea is to tunnel all outgoing traffic through DNS. Yes, you heard right, through DNS, the Domain Name System, used to translate human-readable hostnames to numerical IP addresses and vice versa.
To understand how this'll work, you need a little knowledge of DNS. The DNS system has quite a lot of so-called types of records, such as A for address record, NS for nameserver record, CNAME for canonical name record etc. The most commonly used record is the A record. To let the hostname example.com point to 192.0.34.166 you'd set up the following in your DNS server's config:
example.com. IN A 192.0.34.166
Usually, such entries are stored at your provider's nameserver and you don't have any/full control over them (most likely if you bought a rather cheap webhosting package). But to allow DNS tunneling to work, there has to be a little bit more advanced setup.
What we'll do is delegate all requests to a certain subdomain (or, subzone) to another nameserver. That means: People want to look up your IP, get to your ISP's nameserver and will be redirected to your own nameserver which can then answer the request. For this, of course, you'll need a server running the client where you can become root.
Keep in mind: All requests to a certain subdomain are relayed to your host, which then answers them. And you won't look up ordinary hostnames, I tell you. Hope you got the idea." -
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diigodeli dunbarThe Client The OzymanDNS client is just a perl script which encodes and transfers everything it receives on STDIN to it's destination, via DNS requests. Replys are written to STDOUT. So this isn't particularly useful as a standalone program. But it was de
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Adam CopelandInteresting tool for bypassing restrictions on wireless internet connections
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