iodine

Established, official DNS tunnel tool that routes IPv4 traffic through DNS servers, even under captive portals.

Desktopfreeglobal

An established, official open-source DNS tunneling tool that routes normal IPv4 traffic through DNS servers, useful when captive portals or restrictive firewalls block everything except DNS queries. Aimed at network engineers and people on heavily filtered networks who need DNS as a last-resort tunneling channel.

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Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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