i came know about proxy id configuration for first time. when iam troubleshooting site to site vpn tunnel configuration along with vendor . post configuring proxy id issue got resolved . But iam still in confusion why this proxy is used and in which scenario it should be used .


Proxy-ID is an IKE option for phase 2 of IPsec. The end points either use the source/destination IP addresses or a proxy-ID for identification (especially when one side has a dynamic address). Both sides need to agree on the parameters.

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