135 lines
3.6 KiB
Groff
135 lines
3.6 KiB
Groff
.\" Copyright (c) 2003
|
|
.\" Sam Leffler <sam@errno.com>. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY Sam Leffler AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
|
|
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
.\" THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd August 24, 2006
|
|
.Dt FAST_IPSEC 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm "Fast IPsec"
|
|
.Nd hardware-accelerated IP Security Protocols
|
|
.Sh SYNOPSIS
|
|
.Cd "options FAST_IPSEC"
|
|
.Cd "options IPSEC_FILTERGIF"
|
|
.Cd "device crypto"
|
|
.Pp
|
|
.Bl -item -compact
|
|
.It
|
|
.Va net.inet.esp.enable
|
|
.It
|
|
.Va net.inet.ah.enable
|
|
.It
|
|
.Va net.inet.ipcomp.enable
|
|
.El
|
|
.Sh DESCRIPTION
|
|
.Tn IPsec
|
|
is a set of protocols,
|
|
.Tn ESP
|
|
(for Encapsulating Security Payload)
|
|
.Tn AH
|
|
(for Authentication Header),
|
|
and
|
|
.Tn IPComp
|
|
(for IP Payload Compression Protocol)
|
|
that provide security services for IP datagrams.
|
|
.Nm
|
|
is an experimental implementation of these protocols that uses the
|
|
.Xr crypto 4
|
|
subsystem to carry out cryptographic operations.
|
|
This means, in particular, that cryptographic hardware devices are
|
|
employed whenever possible to optimize the performance of these protocols.
|
|
.Pp
|
|
In general, the
|
|
.Nm
|
|
implementation is intended to be compatible with the
|
|
.Tn KAME IPsec
|
|
implementation.
|
|
This documentation concentrates on differences from that software.
|
|
The user should refer to
|
|
.Xr ipsec 4
|
|
for basic information on setting up and using these protocols.
|
|
Note that it is not currently possible to use
|
|
.Nm
|
|
in conjuction with the
|
|
.Tn "KAME IPsec"
|
|
implementation.
|
|
.Pp
|
|
System configuration requires the
|
|
.Xr crypto 4
|
|
subsystem.
|
|
When the
|
|
.Nm
|
|
protocols are configured for use, all protocols are included in the system.
|
|
To selectively enable/disable protocols, use
|
|
.Xr sysctl 8 .
|
|
.Pp
|
|
The packets can be passed to a virtual interface,
|
|
.Dq enc0 ,
|
|
to perform packet filtering before outbound encryption and after decapsulation
|
|
inbound.
|
|
.Pp
|
|
To properly filter
|
|
.Xr gif 4
|
|
tunnels with firewalls, add
|
|
.Cd "options IPSEC_FILTERGIF"
|
|
to the kernel configuration file.
|
|
.Sh DIAGNOSTICS
|
|
To be added.
|
|
.Sh SEE ALSO
|
|
.Xr crypto 4 ,
|
|
.Xr enc 4 ,
|
|
.Xr ipsec 4 ,
|
|
.Xr setkey 8 ,
|
|
.Xr sysctl 8
|
|
.Sh HISTORY
|
|
The protocols draw heavily on the
|
|
.Ox
|
|
implementation of the
|
|
.Tn IPsec
|
|
protocols.
|
|
The policy management code is derived from the
|
|
.Tn KAME
|
|
implementation found
|
|
in their
|
|
.Tn IPsec
|
|
protocols.
|
|
The
|
|
.Nm
|
|
protocols first appeared in
|
|
.Fx 5.0 .
|
|
.Sh BUGS
|
|
There is presently no support for IPv6.
|
|
.Pp
|
|
The
|
|
.Tn IPcomp
|
|
protocol support does not work.
|
|
.Pp
|
|
Certain legacy authentication algorithms are not supported because of
|
|
issues with the
|
|
.Xr crypto 4
|
|
subsystem.
|
|
.Pp
|
|
This documentation is incomplete.
|