setkey(8)
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SETKEY(8) NetBSD System Manager's Manual SETKEY(8)
NAME
setkey - manually manipulate the IPsec SA/SP database.
SYNOPSIS
setkey [-dv] -c
setkey [-dv] -f filename
setkey [-adPlv] -D
setkey [-dPv] -F
setkey [-h] -x
DESCRIPTION
setkey addes, updates, dumpes, or flushes Security Association Database
(SAD) entries as well as Security Policy Database (SPD) entries in the
kernel.
setkey takes a series of operations from the standard input (if invoked
with -c) or the file named filename (if invoked with -f filename).
-D Dump the SAD entries. If with -P, the SPD entries are dumped.
-F Flush the SAD entries. If with -P, the SPD entries are flushed.
-a setkey usually does not display dead SAD entries with -D. If with
-a, the dead SAD entries will be displayed as well. A dead SAD
entry means that it has been expired but remains because it is
referenced by SPD entries.
-d Enable to print debugging messages for command parser, without
talking to kernel. It is not used usually.
-x Loop forever and dump all the messages transmitted to PF_KEY
socket.
-h Add hexadecimal dump on -x mode.
-l Loop forever with short output on -D.
-v Be verbose. PF_KEY socket (including messages sent from other
processes).
Operations have the following grammar. Note that lines starting with
hashmarks ('#') are treated as comment lines.
add src dst protocol spi [extensions] algorithm... ;
Add an SAD entry.
get src dst protocol spi ;
Show an SAD entry.
delete src dst protocol spi ;
Remove an SAD entry.
flush [protocol] ;
Clear all SAD entries matched by the options.
dump [protocol] ;
Dumps all SAD entries matched by the options.
spdadd src_range dst_range upperspec policy ;
Add an SPD entry.
spddelete src_range dst_range upperspec -P direction ;
Delete an SPD entry.
spdflush ;
Clear all SPD entries.
spddump ;
Dumps all SPD entries.
Meta-arguments are as follows:
src
dst Source/destination of the secure communication is specified as
IPv4/v6 address. setkey does not consult hostname-to-address for
arguments src and dst. They must be in numeric form.
protocol
protocol is one of following:
esp ESP based on rfc2405
esp-old ESP based on rfc1827
ah AH based on rfc2402
ah-old AH based on rfc1826
ipcomp IPCOMP
spi Security Parameter Index (SPI) for the SAD and the SPD. It must
be decimal number or hexadecimal number You can not use the set
of SPI values in the range 0 through 255. (with 0x attached).
extensions
take some of the following:
-m mode Specify a security protocol mode for use. mode is
one of following: transport, tunnel or any. The de-
fault value is any.
-r size Specify window size of bytes for replay prevention.
size must be decimal number in 32-bit word. If size
is zero or not specified, replay check don't take
place.
-u id Specify the identifier of policy. See also
ipsec_set_policy(3).
-f pad_option
pad_option is one of following: zero-pad, random-pad
or seq-pad
-f nocyclic-seq
Don't allow cyclic sequence number.
-lh time
-ls time Specify hard/soft lifetime.
algorithm
-E ealgo key
Specify encryption algorithm.
-A aalgo key
Specify authentication algorithm. If -A is used for
esp, it will be treated as ESP payload authentication
algorithm.
-C calgo [-R]
Specify compression algorithm. If -R is not speci-
fied with ipcomp line, the kernel will use well-known
IPComp CPI (compression parameter index) on IPComp
CPI field on packets, and spi field will be ignored.
spi field is only for kernel internal use in this
case. If -R is used, the value on spi field will ap-
pear on IPComp CPI field on outgoing packets. spi
field needs to be smaller than 0x10000 in this case.
esp SAs accept -E and -A. esp-old SAs accept -E only. ah and ah-
old SAs accept -A only. ipcomp SAs accept -C only.
key must be double-quoted character string or series of hexadeci-
mal digits.
Possible values for ealgo, aalgo and calgo are specified in sepa-
rate section.
src_range
dst_range
These are selections of the secure communication specified as
IPv4/v6 address or IPv4/v6 address range, and it may accompany
TCP/UDP port specification. This takes the following form:
address
address/prefixlen
address[port]
address/prefixlen[port]
prefixlen and port must be decimal number. The square bracket
around port is really necessary. They are not manpage metachar-
acters.
setkey does not consult hostname-to-address for arguments src and
dst. They must be in numeric form.
upperspec
Upper-layer protocol to be used. Currently tcp, udp and any can
be specified. any stands for ``any protocol''.
NOTE: upperspec does not work against forwarding case at this mo-
ment, as it requires extra reassembly at forwarding node (not
implemented at this moment).
policy policy is the one of following:
-P direction discard
-P direction none
-P direction ipsec protocol/mode/src-dst/level
You must specify the direction of its policy as direction. Ei-
ther out or in are used. discard means the packet matching in-
dexes will be discarded. none means that IPsec operation will
not take place onto the packet. ipsec means that IPsec operation
will take place onto the packet. Either ah, esp or ipcomp is to
be set as protocol. mode is either transport or tunnel. You
must specify the end-points addresses of the SA as src and dst
with `-' between these addresses which is used to specify the SA
to use. level is to be one of the following: default, use or
require. default means the kernel consults to the system wide
default against protocol you specified, e.g. esp_trans_deflev
sysctl variable, when the kernel processes the packet. use means
that the kernel use a SA if it's available, otherwise the kernel
keeps normal operation. require means SA is required whenever
the kernel deals with the packet. Note that ``discard'' and
``none'' are not in the syntax described in ipsec_set_policy(3).
There are little differences in the syntax. See
ipsec_set_policy(3) for detail.
ALGORITHMS
The following list shows the supported algorithms. protocol and
algorithm are almost orthogonal. Followings are the list of authentica-
tion algorithms that can be used as aalgo in -A aalgo of protocol parame-
ter:
algorithm keylen (bits) comment
hmac-md5 128 ah: rfc2403
128 ah-old: rfc2085
hmac-sha1 160 ah: rfc2404
160 ah-old: 128bit ICV (no document)
keyed-md5 128 ah: 96bit ICV (no document)
128 ah-old: rfc1828
keyed-sha1 160 ah: 96bit ICV (no document)
160 ah-old: 128bit ICV (no document)
null 0 to 2048 for debugging
Followings are the list of encryption algorithms that can be used as
ealgo in -E ealgo of protocol parameter:
algorithm keylen (bits) comment
des-cbc 64 esp-old: rfc1829, esp: rfc2405
3des-cbc 192 rfc2451
simple 0 to 2048 rfc2410
blowfish-cbc 40 to 448 rfc2451
cast128-cbc 40 to 128 rfc2451
des-deriv 64 ipsec-ciph-des-derived-01 (expired)
3des-deriv 192 no document
rijndael-cbc 128/192/256 draft-ietf-ipsec-ciph-aes-cbc-00
Followings are the list of compression algorithms that can be used as
calgo in -C calgo of protocol parameter:
algorithm comment
deflate rfc2394
lzs rfc2395
EXAMPLES
add 3ffe:501:4819::1 3ffe:501:481d::1 esp 123457
-E des-cbc "ESP SA!!" ;
add 3ffe:501:4819::1 3ffe:501:481d::1 ah 123456
-A hmac-sha1 "AH SA configuration!" ;
add 10.0.11.41 10.0.11.33 esp 0x10001
-E des-cbc "ESP with"
-A hmac-md5 "authentication!!" ;
get 3ffe:501:4819::1 3ffe:501:481d::1 ah 123456 ;
flush ;
dump esp ;
spdadd 10.0.11.41/32[21] 10.0.11.33/32[any] any
-P out ipsec esp/tunnel/192.168.0.1-192.168.1.2/require ;
RETURN VALUES
The command exits with 0 on success, and non-zero on errors.
SEE ALSO
ipsec_set_policy(3), sysctl(8)
HISTORY
The setkey command first appeared in WIDE Hydrangea IPv6 protocol stack
kit. The command was completely re-designed in June 1998.
NetBSD 1.5 May 17, 1998 4
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