NetBSD/usr.sbin/setkey/setkey.8

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.\" Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
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.\" $NetBSD: setkey.8,v 1.5 1999/09/07 06:49:37 itojun Exp $
.\" KAME Id: setkey.8,v 1.1.1.1 1999/08/08 23:31:51 itojun Exp
.\"
.Dd May 17, 1998
.Dt SETKEY 8
.Os
.\"
.Sh NAME
.Nm setkey
.Nd manually manipulate the SA/SP database.
.\"
.Sh SYNOPSIS
.Nm setkey
.Op Fl dv
.Fl c
.Nm setkey
.Op Fl dv
.Fl f Ar filename
.Nm setkey
.Op Fl adPlv
.Fl D
.Nm setkey
.Op Fl dPv
.Fl F
.Nm setkey
.Op Fl h
.Fl x
.\"
.Sh DESCRIPTION
.Nm
updates, or lists the content of, Security Association Database (SAD) entries
in the kernel as well as Security Policy Database (SPD) entries.
.Pp
.Nm
takes a series of operation from standard input
.Po
if invoked with
.Fl c
.Pc
or file named
.Ar filename
.Po
if invoked with
.Fl f Ar filename
.Pc .
.Bl -tag -width Ds
.It Fl D
Dump the SAD entries.
If with
.Fl P ,
the SPD entries are dumped.
.It Fl F
Flush the SAD.
If with
.Fl P ,
the SPD are flushed.
.It Fl a
.Nm
usually do not display dead SAD entries on
.Fl D .
With
.Fl a ,
dead SAD entries will be displayed as well.
Dead SAD entries are kept in the kernel,
when they are referenced from any of SPD entries in the kernel.
.It Fl d
Enable debugging messages.
.It Fl x
Loop forever and dump all the messages transmitted to
.Dv PF_KEY
socket.
.It Fl h
Add hexadecimal dump on
.Fl x
mode. The order is significant.
.It Fl l
Loop forever with short output on
.Fl D .
.It Fl v
Be verbose.
.Dv PF_KEY
socket
.Po
including messages sent from other processes
.Pc .
.El
.Pp
Operation has the following grammar. Note that lines, that start with a
hashmark ('#') are treated as comment lines.
Description of meta-arguments follows.
.Bl -tag -width Ds
.It Xo
.Li add
.Ar src Ar dst Ar upperspec Ar spi
.Op Ar proxyspec
.Ar protocol
.\" .Op Ar depend_on_sa
.Li ;
.Xc
Add a SAD entry.
.\"
.It Xo
.Li get
.Ar src Ar dst Ar upperspec Ar spi
.Op Ar proxyspec
.Op Ar protocol0
.Li ;
.Xc
Show a SAD entry.
.\"
.It Xo
.Li delete
.Ar src Ar dst Ar upperspec Ar spi
.Op Ar proxyspec
.Op Ar protocol0
.Li ;
.Xc
Remove a SAD entry.
.\"
.It Xo
.Li flush
.Op Ar protocol0
.Li ;
.Xc
Clear all SAD entries that matches the options.
.\"
.It Xo
.Li dump
.Op Ar protocol0
.Li ;
.Xc
Dumps all SAD entries that matches the options.
.\"
.It Xo
.Li spdadd
.Ar src Ar dst Ar upperspec
.Op Ar policy
.Li ;
.Xc
Add a SPD entry.
.\"
.It Xo
.Li spddelete
.Ar src Ar dst Ar upperspec
.Li ;
.Xc
Delete a SPD entry.
.\"
.It Xo
.Li spdflush
.Li ;
.Xc
Clear all SPD entries.
.\"
.It Xo
.Li spddump
.Li ;
.Xc
Dumps all SAD entries.
.\"
.El
.Pp
Meta-arguments are as follows:
.Bl -tag -width Ds
.It Ar src
.It Ar dst
Source/destination of the secure communication is specified as
IPv4/v6 address or IPv4/v6 address range, and it may accompany
TCP/UDP port specification.
This takes the following form:
.Bd -literal -offset
.Ar address
.Ar address/prefixlen
.Ar address[port]
.Ar address/prefixlen[port]
.Ed
.Pp
.Ar prefixlen
and
.Ar port
must be decimal number.
The square bracket around
.Ar port
is really necessary.
They are not manpage metacharacters
.Li :-)
.Pp
.Nm
does not consult hostname-to-address for arguments
.Ar src
and
.Ar dst .
They must be in numeric form.
.\"
.It Ar upperspec
Upper-layer protocol to be used.
Currently
.Li tcp ,
.Li udp
and
.Li any
can be specified.
.Li any
is as the wildcard.
NOTE:
.Ar upperspec
of forwarding packet has no effect at this moment, since kernel code fragment to handle
.Ar upperspec
is disabled.
.\"
.It Ar spi
Security Parameter Index (SPI) for the SA and SPD.
It must be decimal number or hexadecimal number
.Po
with
.Li 0x
attached
.Pc .
.\"
.It Ar proxyspec
.Ar proxyspec
can be specified as either an IPv4 or IPv6 address.
If specified, the SAD entry will be used for tunnel mode IPsec processing.
.\"
.It Ar protocol
.Ar protocol
takes the following forms:
.Bl -tag -width Ds
.It Xo
.Fl p
.Li esp
.Op Ar extensions
.Op Fl E Ar ealgo Ar key
.Op Fl A Ar aalgo Ar key
.Op Fl r Ar replay
.Xc
.It Xo
.Fl p
.Li ah
.Op Ar extensions
.Op Fl A Ar aalgo Ar key
.Op Fl r Ar replay
.Xc
.It Xo
.Fl p
.Li esp-old
.Op Ar extensions
.Op Fl E Ar ealgo Ar key
.Op Fl A Ar aalgo Ar key
.Op Fl r Ar replay
.Xc
.It Xo
.Fl p
.Li ah-old
.Op Ar extensions
.Op Fl A Ar aalgo Ar key
.Op Fl r Ar replay
.Xc
.It Xo
.Fl p
.Li ipcomp
.Op Fl C Ar calgo
.Op Fl R
.Xc
.El
.Pp
.Fl p
is always mandatory.
Optional flag,
.Ar extensions ,
can be
.Li cyclic-seq ,
and one of the following:
.Li random-pad ,
.Li seq-pad ,
.Li zero-pad .
.Fl E
specifies encryption algorithm, and
.Fl A
specifies authentication algorithm.
If
.Fl A
is used for
.Fl p Li esp
or
.Fl p Li esp-old ,
it will be treated as ESP payload authentication algorithm.
Possible values for
.Ar ealgo ,
.Ar aalgo
and
.Ar calgo
are specified in separete section.
.Ar key
must be double-quoted character string or a series of hexadecimal digits.
.Fl r Ar replay
is used for checking replay attacks.
.Ar replay
must be decimal number in 32-bit word. If
.Ar replay
is zero or not specified, repley check don't take place.
.Fl R
is used only with
.Li ipcomp .
If
.Fl R
is specified with
.Li ipcomp
line, the kernel will use well-known IPComp CPI
.Pq compression parameter index
on IPComp CPI field on packets, and
.Ar spi
field will be ignored.
.Ar spi
field is only for kernel internal use in this case.
.\"Therefore, compression protocol number will appear on IPComp CPI field.
If
.Fl R
is not used,
the value on
.Ar spi
field will appear on IPComp CPI field on outgoing packets.
.Ar spi
field needs to be smaller than
.Li 0x10000
in this case.
.\"
.It Ar protocol0
This is a subset of
.Ar protocol ,
which takes no optional arguments:
.Bd -literal -offset
.Xo
.Fl p
.Li esp
.Xc
.Xo
.Fl p
.Li ah
.Xc
.Xo
.Fl p
.Li ipcomp
.Xc
.Ed
.\"
.It Ar policy
.Ar policy
is the one of following:
.Bd -literal -offset
.Xo
.Fl P
.Li discard
.Xc
.Xo
.Fl P
.Li none
.Xc
.Xo
.Fl P
.Li ipsec
.Ar protocol/level
.Op Ar /peer
.Xc
.Ed
.Pp
.Li discard
means the packet matching indexes will be discarded.
.Li none
means that IPsec operation will not take place onto the packet.
.Li ipsec
means that IPsec operation will take place onto the packet.
Either
.Li ah ,
.Li esp
or
.Li ipcomp
is to be set as
.Ar protocol .
.Ar level
is to be one of the following:
.Li default , use
or
.Li require .
.Li default
means kernel consults to the system wide default against protocol you
specified, e.g.
.Li esp_trans_deflev
sysctl variable, when kernel processes the packet.
.Li use
means that kernel use a SA if it's available,
otherwise kernel keeps normal operation.
.Li require
means SA is required whenever kernel deals with the packet.
If you plan to set up the tunnel mode of IPsec, you can specify the end-point a
ddress of the tunnel as
.Ar peer
which will be hint when IPsec system set up SAs by Key management automatically.
.El
.Pp
.\"
.Sh ALGORITHMS
The following list shows the supported algorithms.
.Sy protocol
and
.Sy algorithm
are almost orthogonal.
Following are the list of authentication algorithms that can be used as
.Ar aalgo
in
.Fl A Ar aalgo
of
.Ar protocol
parameter:
.Pp
.Bl -column "algorithmxx" -column "keylengthxx" -offset
.It Sy algorithm key length (bits) comment
.It hmac-md5 128 ah: rfc2403
.It 128 ah-old: rfc2085
.It hmac-sha1 160 ah: rfc2404
.It 160 ah-old: 128bit ICV (no document)
.It keyed-md5 128 ah: 96bit ICV (no document)
.It 128 ah-old: rfc1828
.It keyed-sha1 160 ah: 96bit ICV (no document)
.It 160 ah-old: 128bit ICV (no document)
.It null 0 to 2048 for debugging
.El
.Pp
Following are the list of encryption algorithms that can be used as
.Ar ealgo
in
.Fl E Ar ealgo
of
.Ar protocol
parameter:
.Pp
.Bl -column "algorithmxx" -column "keylengthxx" -offset
.It Sy algorithm key length(bits) comment
.It des-cbc 64 esp-old: rfc1829, esp: rfc2405
.It 3des-cbc 192 rfc2451
.It simple 0 to 2048 rfc2410
.It blowfish-cbc 40 to 448 rfc2451
.It cast128-cbc 40 to 128 rfc2451
.It rc5-cbc 40 to 2040 rfc2451
.It des-deriv 64 ipsec-ciph-des-derived-01 (expired)
.It 3des-deriv 192 no document
.El
.Pp
Following are the list of compression algorithms that can be used as
.Ar calgo
in
.Fl C Ar calgo
of
.Ar protocol
parameter:
.Pp
.Bl -column "algorithmxx" -offset
.It Sy algorithm comment
.It deflate rfc2394
.It lzs rfc2395
.El
.\"
.Sh EXAMPLES
.Bd -literal -offset
add 10.0.11.41/32[21] 10.0.11.33/32[0] tcp 0x10001 202.249.11.41
-p esp -E des-cbc "hogehoge"
-A hmac-md5 "hagehogehogehoge" ;
add 127.0.0.1 127.0.0.1 any 0x10001
-p esp -E blowfish-cbc "kamekame"
-A hmac-sha1 "hogehogehogehogehoge" ;
add 127.0.0.1 127.0.0.1 any 0x10001
-p ah-old -A keyed-md5 "testtesttesttest" ;
add 10.0.0.1 10.0.0.2 udp 0x10002 203.178.141.215
-p ah -A keyed-md5 "testtesttesttest" ;
get 10.0.11.41/32[21] 10.0.11.33/32[0] tcp 0x10001 202.249.11.41
-p esp ;
flush ;
dump -p esp ;
spdadd 10.0.11.41/32[21] 10.0.11.33/32[0] any
-P ipsec ah/use esp/require/192.168.0.1 ;
.Ed
.\"
.Sh RETURN VALUES
The command exits with 0 on success, and non-zero on errors.
.\"
.Sh SEE ALSO
.Xr ipsec_set_policy 3 ,
.Xr sysctl 8
.\"
.Sh HISTORY
The
.Nm
command first appeared in WIDE Hydrangea IPv6 protocol stack kit.
The command was completely re-designed in June 1998.
.\"
.\" .Sh BUGS