NAME

       ipsec_spigrp - group/ungroup IPSEC Security Associations

SYNOPSIS

       ipsec spigrp
             ipsecspigrp [--label label] af1dst1spi1proto1
             [af2dst2spi2proto2 [af3dst3spi3proto3 [af4dst4spi4proto4]]]
             ipsecspigrp [--label label] --said SA1 [SA2 [SA3 [SA4]]]
             ipsecspigrp --help
             ipsecspigrp --version

OBSOLETE

       Note that spi is only supported on the classic KLIPS stack. It is not supported on any
       other stack and will be completely removed in future versions. A replacement command still
       needs to be designed

DESCRIPTION

       Spigrp groups IPSEC Security Associations (SAs) together or ungroups previously grouped
       SAs. An entry in the IPSEC extended routing table can only point (via a destination
       address, a Security Parameters Index (SPI) and a protocol identifier) to one SA. If more
       than one transform must be applied to a given type of packet, this can be accomplished by
       setting up several SAs with the same destination address but potentially different SPIs
       and protocols, and grouping them with spigrp.

       The SAs to be grouped, specified by destination address (DNS name lookup, IPv4 dotted quad
       or IPv6 coloned hex), SPI (´0x´-prefixed hexadecimal number) and protocol ("ah", "esp",
       "comp" or "tun"), are listed from the inside transform to the outside; in other words, the
       transforms are applied in the order of the command line and removed in the reverse order.
       The resulting SA group is referred to by its first SA (by af1, dst1, spi1 and proto1).

       The --said option indicates that the SA IDs are to be specified as one argument each, in
       the format <proto><af><spi>@<dest>. The SA IDs must all be specified as separate
       parameters without the --said option or all as monolithic parameters after the --said
       option.

       The SAs must already exist and must not already be part of a group.

       If spigrp is invoked with only one SA specification, it ungroups the previously-grouped
       set of SAs containing the SA specified.

       The --label option identifies all responses from that command invocation with a
       user-supplied label, provided as an argument to the label option. This can be helpful for
       debugging one invocation of the command out of a large number.

       The command form with no additional arguments lists the contents of
       /proc/net/ipsec_spigrp. The format of /proc/net/ipsec_spigrp is discussed in
       ipsec_spigrp(5).

EXAMPLES

       ipsec spigrp inet gw2 0x113 tun inet gw2 0x115 esp inet gw2 0x116 ah
           groups 3 SAs together, all destined for gw2, but with an IPv4-in-IPv4 tunnel SA
           applied first with SPI 0x113, then an ESP header to encrypt the packet with SPI 0x115,
           and finally an AH header to authenticate the packet with SPI 0x116.

       ipsec spigrp --said tun.113@gw2 esp.115@gw2 ah.116@gw2
           groups 3 SAs together, all destined for gw2, but with an IPv4-in-IPv4 tunnel SA
           applied first with SPI 0x113, then an ESP header to encrypt the packet with SPI 0x115,
           and finally an AH header to authenticate the packet with SPI 0x116.

       ipsec spigrp --said tun:233@3049:1::1 esp:235@3049:1::1 ah:236@3049:1::1
           groups 3 SAs together, all destined for 3049:1::1, but with an IPv6-in-IPv6 tunnel SA
           applied first with SPI 0x233, then an ESP header to encrypt the packet with SPI 0x235,
           and finally an AH header to authenticate the packet with SPI 0x236.

       ipsec spigrp inet6 3049:1::1 0x233 tun inet6 3049:1::1 0x235 esp inet6 3049:1::1 0x236 ah
           groups 3 SAs together, all destined for 3049:1::1, but with an IPv6-in-IPv6 tunnel SA
           applied first with SPI 0x233, then an ESP header to encrypt the packet with SPI 0x235,
           and finally an AH header to authenticate the packet with SPI 0x236.

FILES

       /proc/net/ipsec_spigrp, /usr/local/bin/ipsec

SEE ALSO

       ipsec(8), ipsec_manual(8), ipsec_tncfg(8), ipsec_eroute(8), ipsec_spi(8),
       ipsec_klipsdebug(8), ipsec_spigrp(5)

HISTORY

       Written for the Linux FreeS/WAN project <http://www.freeswan.org/> by Richard Guy Briggs.

BUGS

       Yes, it really is limited to a maximum of four SAs, although admittedly it´s hard to see
       why you would need more.

[FIXME: source]                             10/06/2010                            IPSEC_SPIGRP(8)