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SETKEY(8)               FreeBSD System Manager's Manual              SETKEY(8)

     setkey -- manually manipulate the IPsec SA/SP database

     setkey [-dv] -c
     setkey [-dv] -f filename
     setkey [-adPlv] -D
     setkey [-dPv] -F
     setkey [-h] -x

     The setkey utility adds, updates, dumps, or flushes Security Association
     Database (SAD) entries as well as Security Policy Database (SPD) entries
     in the kernel.

     The setkey utility takes a series of operations from the standard input
     (if invoked with -c) or the file named filename (if invoked with -f

     -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      Dead SAD entries are usually not displayed 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 refer-
             enced 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.  -xx makes each timestamps unformatted.

     -h      Add hexadecimal dump on -x mode.

     -l      Loop forever with short output on -D.

     -v      Be verbose.  The program will dump messages exchanged on PF_KEY
             socket, including messages sent from other processes to the ker-

     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.

     deleteall src dst protocol ;
             Remove all SAD entries that match the specification.

     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:

     dst     Source/destination of the secure communication is specified as
             IPv4/v6 address.  The setkey utility does not consult hostname-
             to-address for arguments src and dst.  They must be in numeric

             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 cannot use the set of
             SPI values in the range 0 through 255.  (with 0x attached).

             takes some of the following:
             -m mode     Specify a security protocol mode for use.  mode is
                         one of following: transport, tunnel or any.  The
                         default 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
             -u id       Specify the identifier of the policy entry in SPD.
                         See policy.
             -f pad_option
                         defines the content of the ESP padding.  pad_option
                         is one of following:
                         zero-pad    All of the padding are zero.
                         random-pad  A series of randomized values are set.
                         seq-pad     A series of sequential increasing numbers
                                     started from 1 are set.
             -f nocyclic-seq
                         Don't allow cyclic sequence number.
             -lh time
             -ls time    Specify hard/soft life time duration of the SA.

             -E ealgo key
                         Specify an encryption algorithm.
             -A aalgo key
                         Specify an authentication algorithm.  If -A is used
                         with protocol 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
                         appear on IPComp CPI field on outgoing packets.  spi
                         field needs to be smaller than 0x10000 in this case.

             protocol esp accepts -E and -A.  protocol esp-old accepts -E
             only.  protocol ah and ah-old accept -A only.  protocol ipcomp
             accepts -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.

             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:


             prefixlen and port must be decimal number.  The square bracket
             around port is really necessary.  They are not manpage metachar-

             The setkey utility does not consult hostname-to-address for argu-
             ments src and dst.  They must be in numeric form.

             Upper-layer protocol to be used.  You can use one of words in
             /etc/protocols as upperspec.  Or icmp6, ip4, and any can be spec-
             ified.  any stands for ``any protocol''.  Also you can use the
             protocol number.

             NOTE: upperspec does not work against forwarding case at this
             moment, as it requires extra reassembly at forwarding node (not
             implemented at this moment).  We have many protocols in
             /etc/protocols, but protocols except of TCP, UDP and ICMP may not
             be suitable to use with IPsec.  You have to consider and be care-
             ful to use them.  icmp tcp udp all protocols

     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.
             Either out or in are used.  discard means the packet matching
             indexes 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.  If mode
             is 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.  If mode is transport, both src and dst
             can be omitted.  level is to be one of the following: default,
             use, require or unique.  If the SA is not available in every
             level, the kernel will request getting SA to the key exchange
             daemon.  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 sends a packet matched with the policy.  unique is the
             same to require.  In addition, it allows the policy to bind with
             the unique out-bound SA.  If you use the SA by manual keying, you
             can put the decimal number as the policy identifier after unique
             separated by colon `' like the following; unique:number.  number
             must be between 1 and 32767.  It corresponds to extensions -u.

             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.

     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-

           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
           hmac-sha2-256   256             ah: 96bit ICV (no document)
                           256             ah-old: 128bit ICV (no document)
           hmac-sha2-384   384             ah: 96bit ICV (no document)
                           384             ah-old: 128bit ICV (no document)
           hmac-sha2-512   512             ah: 96bit ICV (no document)
                           512             ah-old: 128bit ICV (no document)

     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

     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 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[21][any] any
                     -P out ipsec esp/tunnel/ ;

     The command exits with 0 on success, and non-zero on errors.

     ipsec_set_policy(3), racoon(8), sysctl(8)

     The setkey utility first appeared in WIDE Hydrangea IPv6 protocol stack
     kit.  The command was completely re-designed in June 1998.

FreeBSD 4.10                   November 20, 2000                  FreeBSD 4.10


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