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SETKEY(8)	       DragonFly 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

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 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 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 timestamp 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- nel. 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: src 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 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 tcp TCP-MD5 based on rfc2385 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). TCP- MD5 associations must use 0x1000 and therefore only have per-host granularity at this time. extensions 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 place. -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. algorithm -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. 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. The setkey utility does not consult hostname-to-address for argu- ments src and dst. They must be in numeric form. upperspec 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.

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 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) tcp-md5 8 to 640 tcp: rfc2385 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 2001:db8:4819::1 2001:db8:481d::1 esp 123457 -E des-cbc "ESP SA!!" ; add 2001:db8:4819::1 2001:db8:481d::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 2001:db8:4819::1 2001:db8:481d::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 ; add 10.1.10.34 10.1.10.36 tcp 0x1000 -A tcp-md5 "TCP-MD5 BGP secret" ;

DIAGNOSTICS

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

SEE ALSO

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

HISTORY

The setkey utility first appeared in WIDE Hydrangea IPv6 protocol stack kit. The command was completely re-designed in June 1998. DragonFly 3.9 November 20, 2000 DragonFly 3.9