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A comment on Pwnat – Autonomous Nat Traversal (2010). Parent comment

Re:Pwnat – Autonomous Nat Traversal (2010) by imglorp on Tuesday September 17, 2019 @07:52AM (#20993871)
DNS working in a corporate IT environment is a surprise. Often, clients are issued an internal DNS server via DHCP, and outbound DNS to arbitrary servers is blocked. This helps mitigate DNS hijacking and also allows some additional outbound domain filtering and logging.
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Re:Pwnat – Autonomous Nat Traversal (2010) by jacobush on Tuesday September 17, 2019 @08:10AM (#20993987)
Oh, yes, DNS is an internal DNS. You can't change it. I meant, it's the only way to "trickle leak" data without it going through the filtering proxy. But who knows, maybe the DNS requests are logged too, but they don't seem to be filtered.

Edit: they are filtered. Suspicious names go to 127.0.0.1

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Re:Pwnat – Autonomous Nat Traversal (2010) by imglorp on Tuesday September 17, 2019 @08:18AM (#20994049)
You can leak names can't you? Wouldn't kinda-short-secret-message.foo.example.com make its way eventually to the authoritative server for example.com, as long as it's not too sketchy a domain?
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Re:Pwnat – Autonomous Nat Traversal (2010) by jacobush on Tuesday September 17, 2019 @08:36AM (#20994217)
Yep, that works.
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Re:Pwnat – Autonomous Nat Traversal (2010) by big_chungus on Tuesday September 17, 2019 @10:37AM (#20995618)
And of course, with the advent of DNS over HTTPS, this is no longer as effective. I can still access blocked sites and get around logging, I just have to set up a tunnel to cloudflare.
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Re:Pwnat – Autonomous Nat Traversal (2010) by jlg23 on Tuesday September 17, 2019 @12:55PM (#20997374)
Which, from a security point of view, would be grounds for immediate termination and quite some companies I worked for would try to sue you to pay for impact assessment.

(connecting a usb-modem is much safer, I'd have to actually spot the device which would require getting out of my chair... ;)

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Re:Pwnat – Autonomous Nat Traversal (2010) by big_chungus on Tuesday September 17, 2019 @02:22PM (#20998459)
The point is not really for me to circumvent restrictions, it's more that a bad actor could. This can largely defeat the purpose; though malware using this is not common, it's started to crop up.
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