<story><title>Bizarre and unusual uses of DNS</title><url>https://fosdem.org/2023/schedule/event/dns_bizarre_and_unusual_uses_of_dns/</url></story><parent_chain><item><author>zyberzero</author><text>I remember 15 years or so; a friend and I figured out that DNS got through my friends cellular connection even though the data limit were reached.
We tested and set up a socks-over-dns-proxy back then and it worked! We loled and then never did anything more than that unfortunately (or it depends, we´d most likely be detected if we continued to use that, eh, solution).</text></item></parent_chain><comment><author>hsbauauvhabzb</author><text>This is really common in ‘airgapped networks’ so much that tools exist to create tunnels. I tested this on a job and upstream dns servers blocked me after about 1mb of traffic, it’s an abuse of a public service and a complete waste of resources (5-10x amplification) so something that’s completely understandable.&lt;p&gt;I imagine 10 years ago, controls may not have been so good though.&lt;p&gt;Edit: part of the rationale in some cases, I believe, is to facilitate captive portals for hotel wifi login etc.</text></comment>
<story><title>Bizarre and unusual uses of DNS</title><url>https://fosdem.org/2023/schedule/event/dns_bizarre_and_unusual_uses_of_dns/</url></story><parent_chain><item><author>zyberzero</author><text>I remember 15 years or so; a friend and I figured out that DNS got through my friends cellular connection even though the data limit were reached.
We tested and set up a socks-over-dns-proxy back then and it worked! We loled and then never did anything more than that unfortunately (or it depends, we´d most likely be detected if we continued to use that, eh, solution).</text></item></parent_chain><comment><author>philsnow</author><text>About 15 years ago as well, a cruise ship I was on blocked most connections if you hadn&amp;#x27;t paid, but allowed DNS, so I tunneled some vpn over dns and it worked.</text></comment>