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abitrolly/ipsecnotes.md

Last active January 11, 2021 15:03
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IPSec
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ipsecnotes.md
  • IPSec is just an encrypted IP packet
  • Meaning everything after IP header is encrypted
  • Well, there is also AH header between IP header and encrypted contents
  • The AH header specifies how the content is encrypted
  • If AH matches on client and receiver, the packet is passed to decryption
  • What happens when the packet is decrypted depends on packet handler on receiving side

https://libreswan.org/wiki/images/e/e0/Netdev-0x12-ipsec-flow.pdf

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