yarrick/iodine on Hacker News

https://github.com/yarrick/iodine

comment by nijave · 2026-01-13 · in Cowork: Claude Code for the rest of your work

…custom nameserver that returns responses via the TXT record or something. Anyway…). This is iodine. https://github.com/yarrick/iodine

comment by niij · 2025-10-25 · in Unlocking free WiFi on British Airways

Iodine has done this for many years. https://github.com/yarrick/iodine

comment by roygbiv2 · 2025-10-10 · in A story about bypassing air Canada's in-flight network restrictions

There's also the Iodine project if you want to tunnel raw IPv4 over DNS [53] [53] https://github.com/yarrick/iodine

comment by BuildTheRobots · 2025-09-20 · in Images over DNS

…options, but avoiding the legal consequences may be a grey area: https://www.stunnel.org/index.html https://github.com/yarrick/iodine https://infocondb.org/con/black-hat/black-hat-usa-2010/psudp... ..and many many more, as networks see…

comment by Joel_Mckay · 2025-08-28 · in Ask HN: The government of my country blocked VPN access. What should I use?

Iodine is the go-to for IP-over-DNS tunneling: https://github.com/yarrick/iodine Back in the Before Times when my wireless telephone didn't support tethering / hotspot iodine was very handy, albeit excruciatingly slow. Very rarely did I…

comment by EvanAnderson · 2025-06-16 · in Getting free internet on a cruise, saving $170

…(shorter domain means higher throughput as payload is a higher percent of the query response). [0] https://github.com/yarrick/iodine

comment by seszett · 2025-06-16 · in Getting free internet on a cruise, saving $170

…94.140.15.15 CleanBrowsing 185.228.168.9 185.228.169.9 Alternate DNS 76.76.19.19 76.223.122.150 https://github.com/yarrick/iodine =3

comment by Joel_Mckay · 2024-09-07 · in Malaysia started mandating ISPs to redirect DNS queries to local servers

Indeed it has with iodine[0] being a popular example. [0] https://github.com/yarrick/iodine

comment by michaelmior · 2024-07-09 · in PySkyWiFi: Free stupid wi-fi on long-haul flights

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Iodine – IP Tunnel over DNS

story by mvolfik · 2024-07-09 · 0 comments

Reminded of using Iodine to break out of captive portals using DNS TXT/SRV etc records https://github.com/yarrick/iodine

comment by _joel · 2024-07-09 · in PySkyWiFi: Free stupid wi-fi on long-haul flights

…I was in - just a regular iodine [2] tunnel would work [1] in the original meaning of the word. [2] https://github.com/yarrick/iodine

comment by poincaredisk · 2024-07-09 · in PySkyWiFi: Free stupid wi-fi on long-haul flights

If you ever find yourself needing to tunnel via DNS, try iodine: https://github.com/yarrick/iodine

comment by nneonneo · 2024-05-29 · in TTE: Terminal Text Effects

…if you do dns querylogging, so I'd not use it for anything major, but it is a fun research tool. https://github.com/yarrick/iodine

comment by SEJeff · 2023-12-11 · in DNS Exfiltration Tool

A more current alternative: https://github.com/yarrick/iodine

comment by cromka · 2023-09-29 · in WiFi without internet on a Southwest flight

There’s a way to workaround virtually any kind of gated Internet access: DNS tunneling ( https://github.com/yarrick/iodine ) It’s slow, but it works and is a handy “last resort” tool.

comment by cromka · 2023-09-29 · in WiFi without internet on a Southwest flight

…doesn't block DNS traffic. You can likely accomplish the same thing with a DNS tunnel like Iodine ( https://github.com/yarrick/iodine ).

comment by vzqx · 2023-09-28 · in WiFi without internet on a Southwest flight

…tunnel. This should work unless the gateway has very restrictive rules on where DNS traffic can go. https://github.com/yarrick/iodine

comment by c7DJTLrn · 2023-09-28 · in WiFi without internet on a Southwest flight

…which that uses could be used just as well with any other UDP based VPN. I once tinkered with https://github.com/yarrick/iodine and successfully connected to resources over the wireless on a train, bypassing its traffic capture and sign-up…

comment by dspillett · 2023-08-10 · in Russia Starts Blocking VPN Protocols

…packets over DNS. Useful for bypassing captive portals on wifi, since DNS usually isn't restricted. https://github.com/yarrick/iodine Regarding cloudflare DNS over HTTPS: It could be that it tries to server data encoded as JSON, which is…

comment by jesprenj · 2023-07-31 · in Show HN: File distribution over DNS: (ab)using DNS as a CDN

…[1]. It obviously does require agreeing on some sort of protocol on both sides though. [1] https://github.com/yarrick/iodine

comment by hashstring · 2023-07-17 · in Show HN: Use DNS TXT to share information

A regular proxy on port 53 might work? Is it necessary to actually use DNS? Otherwise there's https://github.com/yarrick/iodine Edit: seems like others have recommended it already. I got it working in a hotel room once after giving up on…

comment by andrelaszlo · 2023-07-17 · in Show HN: Use DNS TXT to share information

You might be interested in iodine. https://github.com/yarrick/iodine

comment by smashed · 2023-07-17 · in Show HN: Use DNS TXT to share information

Get ready for iodine https://github.com/yarrick/iodine Or IP-over-DNS

comment by mobilio · 2023-07-17 · in Show HN: Use DNS TXT to share information

The iodine protocol allows bi-directional ipv4 traffic over DNS. https://github.com/yarrick/iodine

comment by Hnrobert42 · 2023-07-17 · in Show HN: Use DNS TXT to share information

…data plans are. It might also come in handy if your carrier doesn't charge for SMS when abroad. [1] https://github.com/yarrick/iodine

comment by lukeasch21 · 2023-04-21 · in Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

Maybe one could use something like this https://github.com/yarrick/iodine

comment by cph123 · 2023-03-21 · in Web fingerprinting is worse than I thought

Iodine ( https://github.com/yarrick/iodine ) will do this. I did it with my home Internet connection as the server and found it very useful in a pinch. Using DNS to exfiltrate arbitrary data thru firewalls that don’t log DNS requests is…

comment by EvanAnderson · 2023-02-25 · in Bizarre and unusual uses of DNS

nice, reminds of IP over DNS https://github.com/yarrick/iodine

comment by fsiefken · 2022-11-25 · in Hippotat: IP over HTTP

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Tunnel IPv4 data through a DNS server

story by derwiki · 2022-11-12 · 9 comments

Yh it's awesome this project could run on termux without having to modify much or even iodine https://github.com/yarrick/iodine which is another awesome tool to avoid network restrictions.

comment by aleixrodriala · 2022-11-12 · in Show HN: Wa-tunnel – HTTP Tunneling through Whatsapp

…a VPN, read the source of a few openly available relatively simple VPN/tunnel implementations. https://github.com/yarrick/iodine https://github.com/jpillora/chisel Familiarise yourself with packet layers. Fantastic resource:…

comment by popcalc · 2022-10-18 · in Ask HN: Books/resources/materials that teach you VPN fundamental?

This still works in a lot of circumstances with iodine[0], including several US domestic flights. [0] https://github.com/yarrick/iodine

comment by siraben · 2022-07-27 · in What’s the maximum size of a DNS response?

…server which uses DNS as the transport, which would work even through captive portals at the time. https://github.com/yarrick/iodine

comment by hug · 2022-06-12 · in DNS Toys

It's called dns tunnelling. https://github.com/yarrick/iodine

comment by sneak · 2022-06-11 · in DNS Toys

You can also use iodine ( https://github.com/yarrick/iodine/ ) to tunnel IPv4 data through DNS (useful e.g. when on a captive portal network that doesn't block DNS requests). Performance isn't great obviously, but the concept is…

comment by AdrianoKF · 2022-06-11 · in DNS Toys

…These days, it looks like there are at least a few well-known pieces of software to do this, e.g. https://github.com/yarrick/iodine

comment by teakettle42 · 2022-04-25 · in Apple’s Private Relay can cause the system to ignore firewall rules

You can even set up a VPN over DNS if you really wanted. https://github.com/yarrick/iodine

comment by Spivak · 2021-08-19 · in HTML over DNS: Serving Blog Content over DNS

I guess based on https://github.com/yarrick/iodine ? You could also run your own server.

comment by st1ck · 2020-12-31 · in Ask HN: What's a side project you built to make money that hasn't?

Not the same thing but related for those who enjoy using/abusing dns for fun and profit: https://github.com/yarrick/iodine Allows exfiltrating data using dns.

comment by SEJeff · 2019-12-04 · in Weasel: A Stealthy DNS Beacon

DNS tunnel "server" using iodine https://github.com/yarrick/iodine "Free" Wifi in the whole world after that as most AP allow DNS requests.

comment by wdroz · 2019-07-03 · in Ask HN: What are some fun projects to try out on a spare Linux file server?

With a DNS tunnel, you can achieve "free Wifi" almost everywhere. Iodine[0] is easy to setup. [0] https://github.com/yarrick/iodine

comment by wdroz · 2018-12-13 · in Free Hotel Wifi with Python and Selenium

Or if you need to use paid wi-fi for free, you can always use https://github.com/yarrick/iodine

comment by djsumdog · 2017-01-10 · in HTTPS on NYTimes.com

more generally - ip over dns https://github.com/yarrick/iodine

comment by patrickmcmanus · 2015-10-02 · in Dnsteal – DNS exfiltration tool for stealthily sending files over DNS requests

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Iodine – tunneling IP over DNS

story by kudu · 2014-04-21 · 36 comments