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How To Connect two AWS regions with StrongSwan on CentOS Linux

CentOS is a free and open source Linux distribution. strongSwan is a free and Open Source IPsec-based VPN solution for Linux and other UNIX-like operating system.

From the blog post:

If you want to connect two VPCs within the same region in AWS, you can use VPC peering. AWS unfortunately has no option yet to connect two VPCs in different region with each other.

Within this article we will be connecting two regions through two StrongSwan instances.