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lmns
on Feb 2, 2018
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Lying to TCP makes it a best-effort streaming prot...
That's true for TCP as well. Almost all consumer-grade routers block all incoming connection attempts, not just UDP.
From a stateful firewall's point of view both UDP and TCP have state.
trav4225
on Feb 2, 2018
[–]
Right. I was assuming that the context here was connections being initiated by the client (as most are).
kelnos
on Feb 2, 2018
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... in which case blocking is not an issue. Consumer-grade NAT hardware will no more block client-initiated UDP than it'll block client-initiated TCP, at least not without extra configuration.
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From a stateful firewall's point of view both UDP and TCP have state.