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Deliver packet to higher layer (eg. TCP, UDP) Process (AH/ESP) Match found ВYРASS Not No match BYPASS found Search security policy database Search Discard packet security association database IP Packet IPSec type Inbound IP packet (from Internet)

Deliver packet to higher layer (eg. TCP, UDP) Process (AH/ESP) Match found ВYРASS Not No match BYPASS found Search security policy database Search Discard packet security association database IP Packet IPSec type Inbound IP packet (from Internet)

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider the following figure, which depicts the processing of inbound traffic in IPSec gateways. Deliver packet to higher layer (e.g. TCP, UDP) Process (АНESP Match BYPASS found Not No match Search security association database Search ВYPASS found Discard security policy database packet IP Packet IPSec type Inbound IP packet (from Internet) Explain why does the receiver discard the regular IP packets (not IPSec packets) if the security policy database says that they should be protected (Not BYPASS)?
Transcribed Image Text:Consider the following figure, which depicts the processing of inbound traffic in IPSec gateways. Deliver packet to higher layer (e.g. TCP, UDP) Process (АНESP Match BYPASS found Not No match Search security association database Search ВYPASS found Discard security policy database packet IP Packet IPSec type Inbound IP packet (from Internet) Explain why does the receiver discard the regular IP packets (not IPSec packets) if the security policy database says that they should be protected (Not BYPASS)?
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