IP-XFRM(8) Linux 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-win-
dow SIZE ] [ replay-seq SEQ ] [ replay-oseq SEQ ] [ replay-seq-
hi SEQ ] [ replay-oseq-hi SEQ ] [ flag FLAG-LIST ] [ sel SELEC-
TOR ] [ LIMIT-LIST ] [ encap ENCAP ] [ coa ADDR[/PLEN] ] [ ctx
CTX ] [ extra-flag EXTRA-FLAG-LIST ]
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 } ALGO-NAME ALGO-KEYMAT |
auth-trunc ALGO-NAME ALGO-KEYMAT ALGO-TRUNC-LEN |
aead ALGO-NAME ALGO-KEYMAT ALGO-ICV-LEN |
comp ALGO-NAME
MODE := transport | tunnel | beet | ro | in_trigger
FLAG-LIST := [ FLAG-LIST ] FLAG
FLAG := noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec |
align4 | esn
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 } SEC-
ONDS |
{ byte-soft | byte-hard } SIZE |
{ packet-soft | packet-hard } COUNT
ENCAP := { espinudp | espinudp-nonike } SPORT DPORT OADDR
EXTRA-FLAG-LIST := [ EXTRA-FLAG-LIST ] EXTRA-FLAG
EXTRA-FLAG := dont-encap-dscp
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 ]
[ flag FLAG-LIST]
ip xfrm policy flush [ ptype PTYPE ]
ip xfrm policy count
ip xfrm policy set [ hthresh4 LBITS RBITS ] [ hthresh6 LBITS RBITS ]
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 } SEC-
ONDS |
{ 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 | beet | ro | in_trigger
LEVEL := required | use
ip xfrm monitor [ all-nsid ] [ all
| LISTofXFRM-OBJECTS ]
LISTofXFRM-OBJECTS := [ LISTofXFRM-OBJECTS ] XFRM-OBJECT
XFRM-OBJECT := acquire | expire | SA | policy | aevent | report
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 Data-
base). It is also used for the IP Payload Compression Protocol and fea-
tures 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. (For
IP Payload Compression, the Compression Parameter Index or CPI
is used for SPI.)
XFRM-PROTO
specifies a transform protocol: IPsec Encapsulating Security
Payload (esp), IPsec Authentication Header (ah), IP Payload Com-
pression (comp), Mobile IPv6 Type 2 Routing Header (route2), or
Mobile IPv6 Home Address Option (hao).
ALGO-LIST
contains one or more algorithms to use. Each algorithm ALGO is
specified by:
o the algorithm type: encryption (enc), authentication
(auth or auth-trunc), authenticated encryption with asso-
ciated data (aead), or compression (comp)
o the algorithm name ALGO-NAME (see below)
o (for all except comp) the keying material ALGO-KEYMAT,
which may include both a key and a salt or nonce value;
refer to the corresponding RFC
o (for auth-trunc only) the truncation length ALGO-TRUNC-
LEN in bits
o (for aead only) the Integrity Check Value length ALGO-
ICV-LEN in bits
Encryption algorithms include ecb(cipher_null), cbc(des),
cbc(des3_ede), cbc(cast5), cbc(blowfish), cbc(aes),
cbc(serpent), cbc(camellia), cbc(twofish), and
rfc3686(ctr(aes)).
Authentication algorithms include digest_null, hmac(md5),
hmac(sha1), hmac(sha256), hmac(sha384), hmac(sha512),
hmac(rmd160), and xcbc(aes).
Authenticated encryption with associated data (AEAD) algorithms
include rfc4106(gcm(aes)), rfc4309(ccm(aes)), and
rfc4543(gcm(aes)).
Compression algorithms include deflate, lzs, and lzjh.
MODE specifies a mode of operation for the transform protocol. IPsec
and IP Payload Compression modes are transport, tunnel, and (for
IPsec ESP only) Bound End-to-End Tunnel (beet). Mobile IPv6
modes are route optimization (ro) and inbound trigger (in_trig-
ger).
FLAG-LIST
contains one or more of the following optional flags: noecn, de-
cap-dscp, nopmtudisc, wildrecv, icmp, af-unspec, align4, or esn.
SELECTOR
selects the traffic that will be controlled by the policy, based
on the source address, the destination address, the network de-
vice, 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 proto-
cols, 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
SELECTOR
selects the traffic that will be controlled by the policy, based
on the source address, the destination address, the network de-
vice, 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 proto-
cols, 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 LEV-
EL.
ID is specified by a source address, destination address, transform
protocol XFRM-PROTO, and/or Security Parameter Index SPI. (For
IP Payload Compression, the Compression Parameter Index or CPI
is used for SPI.)
XFRM-PROTO
specifies a transform protocol: IPsec Encapsulating Security
Payload (esp), IPsec Authentication Header (ah), IP Payload Com-
pression (comp), Mobile IPv6 Type 2 Routing Header (route2), or
Mobile IPv6 Home Address Option (hao).
MODE specifies a mode of operation for the transform protocol. IPsec
and IP Payload Compression modes are transport, tunnel, and (for
IPsec ESP only) Bound End-to-End Tunnel (beet). Mobile IPv6
modes are route optimization (ro) and inbound trigger (in_trig-
ger).
LEVEL can be required (default) or use.
ip xfrm policy count count existing policies
Use one or more -s options to display more details, including policy
hash table information.
ip xfrm policy set configure the policy hash table
Security policies whose address prefix lengths are greater than or
equal policy hash table thresholds are hashed. Others are stored in the
policy_inexact chained list.
LBITS specifies the minimum local address prefix length of policies
that are stored in the Security Policy Database hash table.
RBITS specifies the minimum remote address prefix length of policies
that are stored in the Security Policy Database hash table.
ip xfrm monitor state monitoring for xfrm objects
The xfrm objects to monitor can be optionally specified.
If the all-nsid option is set, the program listens to all network
namespaces that have a nsid assigned into the network namespace were
the program is running. A prefix is displayed to show the network
namespace where the message originates. Example:
[nsid 1]Flushed state proto 0
AUTHOR
Manpage revised by David Ward <david.ward AT ll.edu>
Manpage revised by Christophe Gouault <christophe.gouault AT 6wind.com>
Manpage revised by Nicolas Dichtel <nicolas.dichtel AT 6wind.com>
iproute2 20 Dec 2011 IP-XFRM(8)
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