IPsec on DCs

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I have domain controllers seperated by firewalls.

I want to encapsulate all replication traffic using IPsec, so that I can
open only few ports across firewall.

I want tio know step by step how to create filter actions and filters to
achieve this. When I create an IPsec policy in domain controller security
policy, I am not able to even ping. It says negotiating Security.

Thanks,
.



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