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2006•Jisuanji gongcheng yu shejiRequires access

IPSec and NAT compatibility problem and solution

Li Dan

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Abstract

Network address translator(NAT) technology and IPSec technology are widely used in the internet today.However,the incompatibility between NAT and IP security has become a major barrier to their application.The basic theory of NAT and IPSec protocol is introduced at first,then the incompatibility between them is analysed in detail.Then two plausible solutions,RSIP and UDP encap-sulation are introduced.After comparing these two proposals,the latter proposal is a feasible and promising candidate to resolve the problem between IPSec and NAT.At last,the effects is proposed to IPSec that is caused by NAT-traversal.

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What this paper is about

Network address translator(NAT) technology and IPSec technology are widely used in the internet today.However,the incompatibility between NAT and IP security has become a major barrier to their application.The basic theory of NAT and IPSec protocol is introduced at first,then the incompatibility between them is analysed in detail.Then two plausible solutions,RSIP and UDP encap-sulation are introduced.After comparing these two proposals,the latter proposal is a feasible and promising candidate to resolve the problem between IPSec and NAT.At last,the effects is proposed to IPSec that is caused by NAT-traversal.

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Available abstract

Network address translator(NAT) technology and IPSec technology are widely used in the internet today.However,the incompatibility between NAT and IP security has become a major barrier to their application.The basic theory of NAT and IPSec protocol is introduced at first,then the incompatibility between them is analysed in detail.Then two plausible solutions,RSIP and UDP encap-sulation are introduced.After comparing these two proposals,the latter proposal is a feasible and promising candidate to resolve the problem between IPSec and NAT.At last,the effects is proposed to IPSec that is caused by NAT-traversal.

Key concepts: IPsec, NAT traversal, Nat, Computer science, Computer network, Network address, Network address translation, Compatibility (geochemistry)

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