TPC is a three-way handshake wave four times, TCP provides a reliable, end-to-end orderly byte stream transmission

UDP is disordered and may have lost but faster


UDP could be forged IP, TCP will be?

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Search "man-in-the-middle attack", you can see details of the process

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HTTP can man-in-the-middle attack,

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Forged IP at lower levels, are the same

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At the bottom of the things you can't control, you can only control the upper
Reference HTTPS SSL handshake, data interaction with key encryption

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TCP will certainly, tamper-proof requires the IP header and integrity checking, but the premise is not NAT environment, otherwise the NAT changes the IP header after the receiver integrity check must be wrong, refer to IPSec AH protocol