Libreswan is a fork of the Openswan IPsec VPN implementation.

Libreswan was created by almost all of the Openswan developers after a lawsuit about the ownership of the Openswan name was filed against Paul Wouters, the release manager of Openswan, in December 2012.

[3][4][5] The lawsuit was later settled out of court.

[3][4] Libreswan supports most of the common types of IPsec configurations people use including configurations like a host-to-host VPN, subnet to subnet VPN.

[6]