Configuring an IPSec tunnel between two RHEL hosts using Openswan

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Issue

The following steps will allow you to configure an IPSec tunnel that provides end-to-end encryption of the traffic between two hosts. This is a very basic configuration that utilizes an RSA key pair to establish the ISAKMP Security Association, and traffic will be encrypted using ESP.

Environment

Red Hat Enterprise linux 5/6
openswan-2.6.32

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