3 ms·

Is DNS tunneling not used anymore? I've been thinking of setting one up recently

• hsbauauvhabzb 4y ago
  It’s used by malware, and detectable via high entropy nature of the traffic (most domains don’t have thousands of txt records containing b64). Recently I sent a 1mb file over dns, which terminated abruptly, I suspect dns resolvers blacklisted the domain. It also multiplies bandwidth by at least 2-3x I think, so I’d call it bad etiquette to use unless you have a very very good reason to.
  • ipdashc 4y ago
    Gotcha, I see. I just wanted to use it to get around captive portals when necessary, but if DNS blacklisting is an issue, oof...
    • ev1 4y ago
      ive seen a few only allow their resolver to be used to resolve specific A records, like just enough to pay/check out.
      • hsbauauvhabzb 4y ago
        What I mean is I suspect upstream resolvers (google, cloud flare, etc) blocked my domain from resolving any cache misses.