IP-XFRM(8)

NAME
ip xfrm - transform configuration

SYNOPSIS

ip [ OPTIONS ] xfrm { COMMAND | help }

ip xfrm XFRM-OBJECT { COMMAND | help }

XFRM-OBJECT := state | policy | monitor

ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ] [ mark MARK [ mask MASK ] ] [ reqid REQID ] [ seq SEQ ] [ replay-window SIZE ] [ replay-seq SEQ ] [ replay-oseq SEQ ] [ flag FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ] [ encap ENCAP ] [ coa ADDR[/PLEN] ] [ ctx CTX ]

ip xfrm state allocspi ID [ mode MODE ] [ mark MARK [ mask MASK ] ] [ reqid REQID ] [ seq SEQ ] [ min SPI max SPI ]

ip xfrm state { delete | get } ID [ mark MARK [ mask MASK ] ]

ip xfrm state { deleteall | list } [ ID ] [ mode MODE ] [ reqid REQID ] [ flag FLAG-LIST ]

ip xfrm state flush [ proto XFRM-PROTO ]

ip xfrm state count

ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]

XFRM-PROTO := esp | ah | comp | route2 | hao

ALGO-LIST := [ ALGO-LIST ] ALGO

ALGO := { enc | auth | comp } ALGO-NAME ALGO-KEY |
aead ALGO-NAME ALGO-KEY ALGO-ICV-LEN |
auth-trunc ALGO-NAME ALGO-KEY ALGO-TRUNC-LEN

MODE := transport | tunnel | ro | in_trigger | beet

FLAG-LIST := [ FLAG-LIST ] FLAG

FLAG := noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4

SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ]
[ UPSPEC ]

UPSPEC := proto { PROTO |
{ tcp | udp | sctp | dccp } [ sport PORT ] [ dport PORT ] |
{ icmp | ipv6-icmp | mobility-header } [ type NUMBER ] [ code NUMBER ] |
gre [ key { DOTTED-QUAD | NUMBER } ] }

LIMIT-LIST := [ LIMIT-LIST ] limit LIMIT

LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |
{ byte-soft | byte-hard } SIZE |
{ packet-soft | packet-hard } COUNT

ENCAP := { espinudp | espinudp-nonike } SPORT DPORT OADDR

ip xfrm policy { add | update } SELECTOR dir DIR [ ctx CTX ] [ mark MARK [ mask MASK ] ] [ index INDEX ] [ ptype PTYPE ] [ action ACTION ] [ priority PRIORITY ] [ flag FLAG-LIST ] [ LIMIT-LIST ] [ TMPL-LIST ]

ip xfrm policy { delete | get } { SELECTOR | index INDEX } dir DIR [ ctx CTX ] [ mark MARK [ mask MASK ] ] [ ptype PTYPE ]

ip xfrm policy { deleteall | list } [ SELECTOR ] [ dir DIR ] [ index INDEX ] [ ptype PTYPE ] [ action ACTION ] [ priority PRIORITY ]

ip xfrm policy flush [ ptype PTYPE ]

ip xfrm policy count

SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ] [ UPSPEC ]

UPSPEC := proto { PROTO |
{ tcp | udp | sctp | dccp } [ sport PORT ] [ dport PORT ] |
{ icmp | ipv6-icmp | mobility-header } [ type NUMBER ] [ code NUMBER ] |
gre [ key { DOTTED-QUAD | NUMBER } ] }

DIR := in | out | fwd

PTYPE := main | sub

ACTION := allow | block

FLAG-LIST := [ FLAG-LIST ] FLAG

FLAG := localok | icmp

LIMIT-LIST := [ LIMIT-LIST ] limit LIMIT

LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |
{ byte-soft | byte-hard } SIZE |
{ packet-soft | packet-hard } COUNT

TMPL-LIST := [ TMPL-LIST ] tmpl TMPL

TMPL := ID [ mode MODE ] [ reqid REQID ] [ level LEVEL ]

ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]

XFRM-PROTO := esp | ah | comp | route2 | hao

MODE := transport | tunnel | ro | in_trigger | beet

LEVEL := required | use

ip xfrm monitor [ all | LISTofXFRM-OBJECTS ]

DESCRIPTION

xfrm is an IP framework for transforming packets (such as encrypting their payloads). This framework is used to implement the IPsec protocol suite (with the state object operating on the Security Association Database, and the policy object operating on the Security Policy Database). It is also used for the IP Payload Compression Protocol and features of Mobile IPv6.

  ip xfrm state add - add new state into xfrm

  ip xfrm state update - update existing state in xfrm

  ip xfrm state allocspi - allocate an SPI value

  ip xfrm state delete - delete existing state in xfrm

  ip xfrm state get - get existing state in xfrm

  ip xfrm state deleteall - delete all existing state in xfrm

  ip xfrm state list - print out the list of existing state in xfrm

  ip xfrm state flush - flush all state in xfrm

  ip xfrm state count - count all existing state in xfrm

ID  is specified by a source address, destination address, transform protocol XFRM-PROTO, and/or Security Parameter Index SPI.

XFRM-PROTO
    specifies a transform protocol: IPsec Encapsulating Security Payload (esp), IPsec Authentication Header (ah), IP Payload Compression (comp), Mobile IPv6 Type 2 Routing Header (route2), or Mobile IPv6 Home Address Option (hao).

ALGO-LIST
    specifies one or more algorithms ALGO to use. Algorithm types include encryption (enc), authentication (auth), authentication with a specified truncation length (auth-trunc), authenticated encryption with associated data (aead), and compression (comp). For each algorithm used, the algorithm type, the algorithm name ALGO-NAME, and the key ALGO-KEY must be specified. For aead, the Integrity Check Value length ALGO-ICV-LEN must additionally be specified. For auth-trunc, the signature truncation length ALGO-TRUNC-LEN must additionally be specified.

MODE
    specifies a mode of operation: IPsec transport mode (transport), IPsec tunnel mode (tunnel), Mobile IPv6 route optimization mode (ro), Mobile IPv6 inbound trigger mode (in_trigger), or IPsec ESP Bound End-to-End Tunnel Mode (beet).

FLAG-LIST
    contains one or more of the following optional flags: noecn, decap-dscp, nopmtudisc, wildrecv, icmp, af-unspec, or align4.

SELECTOR
    selects the traffic that will be controlled by the policy, based on the source address, the destination address, the network device, and/or UPSPEC.

UPSPEC
    selects traffic by protocol. For the tcp, udp, sctp, or dccp protocols, the source and destination port can optionally be specified. For the icmp, ipv6-icmp, or mobility-header protocols, the type and code numbers can optionally be specified. For the gre protocol, the key can optionally be specified as a dotted-quad or number. Other protocols can be selected by name or number PROTO.

LIMIT-LIST
    sets limits in seconds, bytes, or numbers of packets.

ENCAP
    encapsulates packets with protocol espinudp or espinudp-nonike, using source port SPORT, destination port DPORT , and original address OADDR.

  ip xfrm policy add - add a new policy

  ip xfrm policy update - update an existing policy

  ip xfrm policy delete - delete an existing policy

  ip xfrm policy get - get an existing policy

  ip xfrm policy deleteall - delete all existing xfrm policies

  ip xfrm policy list - print out the list of xfrm policies

  ip xfrm policy flush - flush policies

  ip xfrm policy count - count existing policies

SELECTOR
    selects the traffic that will be controlled by the policy, based on the source address, the destination address, the network device, and/or UPSPEC.

UPSPEC
    selects traffic by protocol. For the tcp, udp, sctp, or dccp protocols, the source and destination port can optionally be specified. For the icmp, ipv6-icmp, or mobility-header protocols, the type and code numbers can optionally be specified. For the gre protocol, the key can optionally be specified as a dotted-quad or number. Other protocols can be selected by name or number PROTO.

DIR selects the policy direction as in, out, or fwd.

CTX sets the security context.

PTYPE
    can be main (default) or sub.

ACTION
    can be allow (default) or block.

PRIORITY
    is a number that defaults to zero.

FLAG-LIST
    contains one or both of the following optional flags: local or icmp.

LIMIT-LIST
    sets limits in seconds, bytes, or numbers of packets.

TMPL-LIST
    is a template list specified using ID, MODE, REQID, and/or LEVEL.

ID  is specified by a source address, destination address, transform protocol XFRM-PROTO, and/or Security Parameter Index SPI.

XFRM-PROTO
    specifies a transform protocol: IPsec Encapsulating Security Payload (esp), IPsec Authentication Header (ah), IP Payload Compression (comp), Mobile IPv6 Type 2 Routing Header (route2), or Mobile IPv6 Home Address Option (hao).

MODE
    specifies a mode of operation: IPsec transport mode (transport), IPsec tunnel mode (tunnel), Mobile IPv6 route optimization mode (ro), Mobile IPv6 inbound trigger mode (in_trigger), or IPsec ESP Bound End-to-End Tunnel Mode (beet).

LEVEL
    can be required (default) or use.

  ip xfrm monitor - state monitoring for xfrm objects
The xfrm objects to monitor can be optionally specified.

AUTHOR
Manpage by David Ward