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