Most of the modern versions of FreeBSD have IPsec support
in their base source. So you will need to include the
IPSEC
option in your kernel config and, after
kernel rebuild and reinstall, configure IPsec connections using
setkey(8) command.
A comprehensive guide on running IPsec on FreeBSD is provided in FreeBSD Handbook.
This, and other documents, can be downloaded from http://ftp.FreeBSD.org/pub/FreeBSD/doc/
For questions about FreeBSD, read the
documentation before
contacting <questions@FreeBSD.org>.
For questions about this documentation, e-mail <doc@FreeBSD.org>.