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this post was submitted on 25 Dec 2025
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Programming
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It's this actually a thing? I've never seen any corporate network that blocks UDP. HTTP/3 will even rely on it.
Yep, same way people block all ICMP and then wonder why stuff breaks.
Yes. My high school used to do this. UDP blocked except for DNS to some specific servers, and probably some other needed things.
Yes. Quic and other protocols are too new and don't have a ton of support in firewall and inspection tools that are used by said corpos. It's even required in the DISA STIG requirements to disable quic at the browser level.