Manpages - ip-macsec.8

ip-macsec - MACsec device configuration

ip link add link */DEVICE/ name NAME type macsec * [ [ address*/ <lladdr>/ ] *port*/ PORT/ | *sci*/ <u64>/ ] [ *cipher { default | gcm-aes-128 | gcm-aes-256“}*]*[“ icvlen*/ ICVLEN/ ] [ *encrypt { on | off } ] [ send_sci { on | off } ] [ end_station { on

replay { on | off } ] [ window*/ WINDOW/ ] [ *validate { strict | check | disabled } ] [ encodingsa*/ SA/ ] [ *offload { off | phy | mac } ]

ip macsec add */DEV/ tx sa* { 0..3 } [ OPTS ] key*/ ID KEY/
*ip macsec set */DEV/ tx sa* { 0..3 } [ OPTS ]
ip macsec del */DEV/ tx sa* { 0..3 }

ip macsec add */DEV/ rx SCI [ on | off ]
*ip macsec set */DEV/ rx SCI [ on | off ]
*ip macsec del */DEV/ rx */SCI/

ip macsec add */DEV/ rx SCI sa* { 0..3 } [ OPTS ] *key*/ ID KEY/
ip macsec set */DEV/ rx SCI sa* { 0..3 } [ OPTS ]
ip macsec del */DEV/ rx SCI sa* { 0..3 }

ip macsec offload */DEV/ { *off | phy | mac }

ip macsec show [/ DEV /]

OPTS := [ pn { 1..2^32-1 } ] [ on | off ]
SCI := { sci <u64> | port PORT *address*/ <lladdr> / }
PORT := { 1..2^16-1 }

The ip macsec commands are used to configure transmit secure associations and receive secure channels and their secure associations on a MACsec device created with the ip link add command using the macsec type.

This tool can be used to configure the 802.1AE keys of the interface. Note that 802.1AE uses GCM-AES with a initialization vector (IV) derived from the packet number. The same key must not be used with the same IV more than once. Instead, keys must be frequently regenerated and distributed. This tool is thus mostly for debugging and testing, or in combination with a user-space application that reconfigures the keys. It is wrong to just configure the keys statically and assume them to work indefinitely. The suggested and standardized way for key management is 802.1X-2010, which is implemented by wpa_supplicant.

*ip-link*(8) *wpa_supplicant*(8)

Sabrina Dubroca <sd@queasysnail.net>