IPSec NAT-T in transport mode

Crest crest at cyb0rg.org
Wed Jan 20 13:22:45 UTC 2010

Rabidinov M.A. schrieb:
> Hello, Freebsd-stable.
> Does FreeBSD 8.0 support IPSec NAT-T in transport mode?
> I want to create a L2TP/IPSec server. My VPN clients are NATed.
> L2TP server (MPD5.x) makes tunnel, so I need working IPSec NAT-T in transport mode.
> Thanks a lot.

Yes the NAT-T Patch has been integrated into FreeBSD 8.0.

Just rebuild your kernel with this options:
device          crypto		# IPsec depends on this
options         IPSEC
options         IPSEC_DEBUG
options         IPSEC_NAT_T

More information about the freebsd-stable mailing list