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freebsd-nq/share/man/man4/enc.4

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Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
.\" $OpenBSD: enc.4,v 1.22 2006/05/26 08:51:29 jmc Exp $
.\"
.\" Copyright (c) 1999 Angelos D. Keromytis
.\" 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.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Angelos D. Keromytis.
.\" 4. The name of the author may not be used to endorse or promote products
.\" derived from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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 June 16, 2006
.Dt ENC 4
.Os
.Sh NAME
.Nm enc
.Nd Encapsulating Interface
.Sh SYNOPSIS
- Convert to our new SYNOPSIS style - Correct tcpdump reference
2006-06-27 12:48:15 +00:00
To compile this driver into the kernel,
place the following line in your
kernel configuration file:
.Bd -ragged -offset indent
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
.Cd "device enc"
- Convert to our new SYNOPSIS style - Correct tcpdump reference
2006-06-27 12:48:15 +00:00
.Ed
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
.Sh DESCRIPTION
The
.Nm
interface is a software loopback mechanism that allows hosts or
firewalls to filter
.Xr fast_ipsec 4
traffic using any firewall package that hooks in via the
.Xr pfil 9
framework.
.Pp
The
.Nm
interface allows an administrator
to see outgoing packets before they have been processed by
.Xr fast_ipsec 4 ,
or incoming packets after they have been similarly processed, via
Correct references to tcpdump(1). PR: 108980 Submitted by: Yonatan
2007-02-09 20:39:14 +00:00
.Xr tcpdump 1 .
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
.Pp
The
Revise markup.
2006-09-30 15:14:49 +00:00
.Dq Li enc0
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
interface inherits all IPsec traffic.
Thus all IPsec traffic can be filtered based on
Revise markup.
2006-09-30 15:14:49 +00:00
.Dq Li enc0 ,
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
and all IPsec traffic could be seen by invoking
Correct references to tcpdump(1). PR: 108980 Submitted by: Yonatan
2007-02-09 20:39:14 +00:00
.Xr tcpdump 1
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
on the
Revise markup.
2006-09-30 15:14:49 +00:00
.Dq Li enc0
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
interface.
.Sh EXAMPLES
To see all outgoing packets before they have been processed via
.Xr fast_ipsec 4 ,
or all incoming packets after they have been similarly processed:
.Pp
Revise markup.
2006-09-30 15:14:49 +00:00
.Dl "tcpdump -i enc0"
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
.Sh SEE ALSO
- Convert to our new SYNOPSIS style - Correct tcpdump reference
2006-06-27 12:48:15 +00:00
.Xr tcpdump 1 ,
Add a pseudo interface for packet filtering IPSec connections before or after encryption. There are two functions, a bpf tap which has a basic header with the SPI number which our current tcpdump knows how to display, and handoff to pfil(9) for packet filtering. Obtained from: OpenBSD Based on: kern/94829 No objections: arch, net MFC after: 1 month
2006-06-26 22:30:08 +00:00
.Xr bpf 4 ,
.Xr fast_ipsec 4 ,
.Xr ipf 4 ,
.Xr ipfw 4 ,
- Convert to our new SYNOPSIS style - Correct tcpdump reference
2006-06-27 12:48:15 +00:00
.Xr pf 4
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