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IPSEC_SPIGRP(5)                                                IPSEC_SPIGRP(5)



NAME
       ipsec_spigrp - list IPSEC Security Association groupings

SYNOPSIS
       ipsec spigrp
              cat/proc/net/ipsec_spigrp



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


DESCRIPTION
       /proc/net/ipsec_spigrp  is  a read-only file that lists groups of IPSEC
       Security Associations (SAs).


       An entry in the IPSEC extended routing table can  only  point  (via  an
       SAID)  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 proto-
       cols, and grouping them with ipsec_spigrp(8).


       The SA groups are listed, one line per connection/group, as a  sequence
       of  SAs to be applied (or that should have been applied, in the case of
       an incoming packet) from inside to outside the packet. An SA is identi-
       fied  by  its  SAID, which consists of protocol ("ah", "esp", "comp" or
       "tun"), SPI (with '.' for IPv4 or ':'  for  IPv6  prefixed  hexadecimal
       number ) and destination address (IPv4 dotted quad or IPv6 coloned hex)
       prefixed by '@', in the format <proto><af><spi>@<dest>.


EXAMPLES
       tun.3d0@192.168.2.110
              comp.3d0@192.168.2.110                esp.187a101b@192.168.2.110
              ah.187a101a@192.168.2.110


       is  a  group  of 3 SAs, destined for 192.168.2.110 with an IPv4-in-IPv4
       tunnel SA applied first with an SPI of 3d0 in hexadecimal, followed  by
       a  Deflate compression header to compress the packet with CPI of 3d0 in
       hexadecimal, followed by an Encapsulating Security  Payload  header  to
       encrypt the packet with SPI 187a101b in hexadecimal, followed by an Au-
       thentication Header to authenticate the packet  with  SPI  187a101a  in
       hexadecimal,  applied  from inside to outside the packet. This could be
       an incoming or outgoing group, depending on the address  of  the  local
       machine.


       tun:3d0@3049:1::2
              comp:3d0@3049:1::2                        esp:187a101b@3049:1::2
              ah:187a101a@3049:1::2


       is a group of 3 SAs, destined for 3049:1::2 with an IPv6-in-IPv6 tunnel
       SA  applied  first with an SPI of 3d0 in hexadecimal, followed by a De-
       flate compression header to compress the packet  with  CPI  of  3d0  in
       hexadecimal,  followed  by  an Encapsulating Security Payload header to
       encrypt the packet with SPI 187a101b in hexadecimal, followed by an Au-
       thentication  Header  to  authenticate  the packet with SPI 187a101a in
       hexadecimal, applied from inside to outside the packet. This  could  be
       an  incoming  or  outgoing group, depending on the address of the local
       machine.


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


SEE ALSO
       ipsec(8),     ipsec_manual(8),     ipsec_tncfg(5),     ipsec_eroute(5),
       ipsec_spi(5),  ipsec_klipsdebug(5),  ipsec_spigrp(8), ipsec_version(5),
       ipsec_pf_key(5)


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


BUGS
       :-)




                                                               IPSEC_SPIGRP(5)