.TH IP\-MACSEC 8 "07 Mar 2016" "iproute" "Linux"

.SH NAME

ip-macsec \- MACsec device configuration

.SH "SYNOPSIS"

.BI "ip link add link " DEVICE " name " NAME " type macsec "

[ [

.BI address " <lladdr>"

]

.BI port " PORT"

|

.BI sci " <u64>"

] [

.BR cipher " { " default " | " gcm-aes-128 " | "gcm-aes-256" } ] ["

.BI icvlen " ICVLEN"

] [

.BR encrypt " { " on " | " off " } ] ["

.BR send_sci " { " on " | " off " } ] ["

.BR end_station " { " on " | " off " } ] ["

.BR scb " { " on " | " off " } ] ["

.BR protect " { " on " | " off " } ] ["

.BR replay " { " on " | " off " } ] ["

.BI window " WINDOW"

] [

.BR validate " { " strict " | " check " | " disabled " } ] ["

.BI encodingsa " SA"

] [

.BR offload " { " off " | " phy " | " mac " }"

]

.BI "ip macsec add " DEV " tx sa"

.RI "{ " 0..3 " } [ " OPTS " ]"

.BI key " ID KEY"

.br

.BI "ip macsec set " DEV " tx sa"

.RI "{ " 0..3 " } [ " OPTS " ]"

.br

.BI "ip macsec del " DEV " tx sa"

.RI "{ " 0..3 " }"

.BI "ip macsec add " DEV " rx " SCI

.RB [ " on " | " off " ]

.br

.BI "ip macsec set " DEV " rx " SCI

.RB [ " on " | " off " ]

.br

.BI "ip macsec del " DEV " rx " SCI

.BI "ip macsec add " DEV " rx " SCI " sa"

.RI "{ " 0..3 " } [ " OPTS " ]"

.BI key " ID KEY"

.br

.BI "ip macsec set " DEV " rx " SCI " sa"

.RI "{ " 0..3 " } [ " OPTS " ]"

.br

.BI "ip macsec del " DEV " rx " SCI " sa"

.RI "{ " 0..3 " }"

.BI "ip macsec offload " DEV

.RB "{ " off " | " phy " | " mac " }"

.B ip macsec show

.RI [ " DEV " ]

.IR OPTS " := [ "

.BR pn " { "

.IR 1..2^32-1 " } ] ["

.BR on " | " off " ]"

.br

.IR SCI " := { "

.B sci

.IR <u64> " | "

.BI port

.IR PORT

.BI address " <lladdr> "

}

.br

.IR PORT " := { " 1..2^16-1 " } "

.SH DESCRIPTION

The

.B 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

.B ip link add

command using the

.I macsec

type.

.SH EXAMPLES

.PP

.SS Create a MACsec device on link eth0 (offload is disabled by default)

.nf

# ip link add link eth0 macsec0 type macsec port 11 encrypt on

.PP

.SS Configure a secure association on that device

.nf

# ip macsec add macsec0 tx sa 0 pn 1024 on key 01 81818181818181818181818181818181

.PP

.SS Configure a receive channel

.nf

# ip macsec add macsec0 rx port 1234 address c6:19:52:8f:e6:a0

.PP

.SS Configure a receive association

.nf

# ip macsec add macsec0 rx port 1234 address c6:19:52:8f:e6:a0 sa 0 pn 1 on key 00 82828282828282828282828282828282

.PP

.SS Display MACsec configuration

.nf

# ip macsec show

.PP

.SS Configure offloading on an interface

.nf

# ip macsec offload macsec0 phy

.PP

.SS Configure offloading upon MACsec device creation

.nf

# ip link add link eth0 macsec0 type macsec port 11 encrypt on offload mac

.SH NOTES

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 distibuted.

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.

.SH SEE ALSO

.br

.BR ip-link (8)

.BR wpa_supplicant (8)

.SH AUTHOR

Sabrina Dubroca <sd@queasysnail.net>