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How TCP and UDP packets come to the world (lemmy.one)
submitted 3 years ago* by to c/programmerhumor@lemmy.ml
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[–] 3 points 3 years ago* (1 child)

What do you mean interception is at a different layer? You can capture at any layer as long as the payload isn't encrypted, and if it is, you still get layers 1 through 4 (Physical, Link, Network, and Transport).

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  • [–] 7 points 3 years ago

    UDP is a transport protocol. OSI layer 4. It sits atop the packet (network/L3) layer which is where IP dictates where a packet is going. A broadcast or multicast IP address would mean it can be observed by many machines, but unicast is still the most common, and is routed to just one machine.

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