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destination port 443 and protocol shows UDP

asked 2022-09-24 21:52:01 +0000

moelharrak gravatar image

Hi all, I'm anaylzing traffic with wireshark , and I notice that the destination is with port 443 but the protocol shows UDP instead of TCP, Is that Normal?

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answered 2022-09-25 05:55:38 +0000

BigFatCat gravatar image

This is the HTTP/3 standard. The server will first try UDP 443, or the QUIC protocol (RFC 9000). If UDP 443 is not supported, then it will use TCP 443.

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Asked: 2022-09-24 21:52:01 +0000

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Last updated: Sep 25 '22