dns.toys
iodine
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dns.toys
- FLaNK Weekly 08 Jan 2024
- DNS Toys
- Useful Utilities and Services over DNS
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Icanhazip: A simple IP address tool survived a deluge of users (2021)
In addition to the others, there is also https://www.dns.toys/
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Show HN: Use DNS TXT to share information
It's always amusing to see DNS "hackery"[1] like this, and always makes me go back to DNS Toys (https://www.dns.toys/), which generated a huge discussion on HN a year ago [2]
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[1] well, it's not really hackery if you're being pedantic, since it's doing what the spec allows it to do
[2] DNS Toys (946 points): https://news.ycombinator.com/item?id=31704789
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YouTube/Google/Gmail unreachable, however all other sites are? (No blocklists, all disabled) Unbound and Google = SERVFAIL, Unbound and everything else = works.
#1: Which of the below DNS Servers track user data & logs #2: Is there any reason to care about DNSSEC in 2022 as regards choice of registrar and DNS host? #3: Useful utilities and toys over DNS | 6 comments
- dns.toys: Useful utilities and services over DNS
- dns.toys
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Hacker News top posts: Jun 12, 2022
DNS Toys\ (83 comments)
- DNS query BOFH excuse generator for ShittySysadmin.com
iodine
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Show HN: This Website Is Hosted on DNS
Reminds me of using https://code.kryo.se/iodine/ ( DNS tunnel ) and a empty prepaid card...
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DNS Exfiltration Tool
Obligatory dns tunnel software for exfil. It is super noisy 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
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Fun with DNS TXT Records
It's worth noting that you (re) invented what iodine does: https://code.kryo.se/iodine/
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WiFi without internet on a Southwest flight
(https://github.com/yarrick/iodine)
It’s slow, but it works and is a handy “last resort” tool.
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Russia starts blocking VPN at the protocol (WireGuard, OpenVPN) level
While working in an environment where VPN connections were pretty much all blocked⁰ a friend of mine had success using https://guacamole.apache.org/ to access a remote machine¹. Not quite the same as a direct VPN connection but worth a try if nothing else functions, it looks enough like normal HTTPS traffic that he got away with it.
To keep your wireguard setup more as-is, you could try https://kirill888.github.io/notes/wireguard-via-websocket/ to tunnel that via a web server. In fact https://github.com/erebe/wstunnel 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 requirement, so that might be an option, though I think fully blocking external DNS is more common now so this is less likely to work²³.
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[0] practically only HTTP(S) permitted, not even SSH, DPI in use that detected just using SSH or OpenVPN over port 443
[1] NOTE: be careful breaching restrictions like this, you are at risk of an insta-sacking if discovered, or worse if operating in some securiry environments!
[2] and the latency when it does work is significant!
[3] and that much traffic over port 53 might get noticed by the heuristics of data exfiltration scanner, encouraging sysadmins to notice and implement a way to block it
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Show HN: File distribution over DNS: (ab)using DNS as a CDN
There's also iodine, a C program that tunnels IPv4 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 impossible in JSON. Some control characters and bytes 128-255 cannot be represented as JSON strings.
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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
- Anything can be a message queue if you use it wrongly enough
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help with choosing a VPN to host (I'll explain)
Well, you're really exhausting your options here (and possibly your IT department's patience). Iodine would still be an option, it creates a tunnel through DNS traffic. Nearly impossible to block/filter out but you shouldn't expect a lot of bandwidth. Try it out! Although if you're only going to use low-bandwidth applications through the tunnel anyway you might as well use your own mobile data plan instead of your school's WLAN.
- DNS blacklisting in enterprise
What are some alternatives?
bunny1 - bunny1 is a tool that lets you write smart bookmarks in python and then share them across all your browsers and with a group of people or the whole world. It was developed at Facebook and is widely used there.
dnscat2
vytal-extension - Browser extension to spoof timezone, geolocation, locale and user agent.
miniProxy
android_kernel_oneplus_sm8250
PHP-Proxy - Proxy Application built on php-proxy library ready to be installed on your server
kittendns
Nginx Proxy Manager - Docker container for managing Nginx proxy hosts with a simple, powerful interface
bofh - BOFH excuse generator
inlets - Get public TCP LoadBalancers for local Kubernetes clusters
Lemmy - 🐀 A link aggregator and forum for the fediverse
Swiperproxy - A Python-based HTTP/HTTPS-proxy.