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)