Build an IPSEC VPN Without Losing Your Mind

[ Thanks to Michael
for this link. ]

“With latency-sensitive or high bandwidth requirements, often we
find OpenVPN unable to perform. IPSEC is the solution, but the
barrier to using IPSEC is great. It is potentially difficult to
configure, and one’s first exposure to VPN concepts is often

“With the concepts explained, the task of actually making IPSEC
work becomes much more tenable. Likewise, using Openswan, the fork
and improvement of FreeS/WAN, makes configuring IPSEC almost

“We will explain how to create a network-to-network connection
so hosts at two remote sites can communicate with each other. If
you have trouble setting this up, first try host-to-host mode,
using the excellent tutorial on the Openswan wiki.”

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