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The man page of ip-macsec and the existance of the tool makes it seem like the user could just configure static keys once, and be done with it. That is not the case. Some form or key management must be done in user space. Add a note about that. Signed-off-by: Thomas Haller <thaller@redhat.com> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
121 lines
3.0 KiB
Groff
121 lines
3.0 KiB
Groff
.TH IP\-MACSEC 8 "07 Mar 2016" "iproute" "Linux"
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.SH NAME
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ip-macsec \- MACsec device configuration
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.SH "SYNOPSIS"
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.BI "ip link add link " DEVICE " name " NAME " type macsec "
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[ [
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.BI address " <lladdr>"
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]
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.BI port " PORT"
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.BI sci " <u64>"
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] [
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.BR cipher " { " default " | " gcm-aes-128 " | "gcm-aes-256" } ] ["
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.BI icvlen " ICVLEN"
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] [
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.BR encrypt " { " on " | " off " } ] ["
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.BR send_sci " { " on " | " off " } ] ["
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.BR end_station " { " on " | " off " } ] ["
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.BR scb " { " on " | " off " } ] ["
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.BR protect " { " on " | " off " } ] ["
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.BR replay " { " on " | " off " } ] ["
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.BI window " WINDOW"
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] [
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.BR validate " { " strict " | " check " | " disabled " } ] ["
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.BI encodingsa " SA"
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]
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.BI "ip macsec add " DEV " tx sa"
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.RI "{ " 0..3 " } [ " OPTS " ]"
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.BI key " ID KEY"
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.br
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.BI "ip macsec set " DEV " tx sa"
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.RI "{ " 0..3 " } [ " OPTS " ]"
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.br
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.BI "ip macsec del " DEV " tx sa"
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.RI "{ " 0..3 " }"
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.BI "ip macsec add " DEV " rx " SCI
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.RB [ " on " | " off " ]
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.br
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.BI "ip macsec set " DEV " rx " SCI
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.RB [ " on " | " off " ]
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.br
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.BI "ip macsec del " DEV " rx " SCI
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.BI "ip macsec add " DEV " rx " SCI " sa"
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.RI "{ " 0..3 " } [ " OPTS " ]"
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.BI key " ID KEY"
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.br
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.BI "ip macsec set " DEV " rx " SCI " sa"
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.RI "{ " 0..3 " } [ " OPTS " ]"
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.br
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.BI "ip macsec del " DEV " rx " SCI " sa"
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.RI "{ " 0..3 " }"
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.B ip macsec show
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.RI [ " DEV " ]
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.IR OPTS " := [ "
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.BR pn " { "
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.IR 1..2^32-1 " } ] ["
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.BR on " | " off " ]"
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.br
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.IR SCI " := { "
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.B sci
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.IR <u64> " | "
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.BI port
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.IR PORT
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.BI address " <lladdr> "
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}
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.br
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.IR PORT " := { " 1..2^16-1 " } "
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.SH DESCRIPTION
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The
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.B ip macsec
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commands are used to configure transmit secure associations and receive secure channels and their secure associations on a MACsec device created with the
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.B ip link add
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command using the
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.I macsec
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type.
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.SH EXAMPLES
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.PP
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.SS Create a MACsec device on link eth0
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.nf
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# ip link add link eth0 macsec0 type macsec port 11 encrypt on
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.PP
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.SS Configure a secure association on that device
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.nf
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# ip macsec add macsec0 tx sa 0 pn 1024 on key 01 81818181818181818181818181818181
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.PP
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.SS Configure a receive channel
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.nf
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# ip macsec add macsec0 rx port 1234 address c6:19:52:8f:e6:a0
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.PP
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.SS Configure a receive association
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.nf
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# ip macsec add macsec0 rx port 1234 address c6:19:52:8f:e6:a0 sa 0 pn 1 on key 00 82828282828282828282828282828282
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.PP
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.SS Display MACsec configuration
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.nf
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# ip macsec show
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.SH NOTES
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This tool can be used to configure the 802.1AE keys of the interface. Note that 802.1AE uses GCM-AES
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with a initialization vector (IV) derived from the packet number. The same key must not be used
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with the same IV more than once. Instead, keys must be frequently regenerated and distibuted.
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This tool is thus mostly for debugging and testing, or in combination with a user-space application
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that reconfigures the keys. It is wrong to just configure the keys statically and assume them to work
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indefinitely. The suggested and standardized way for key management is 802.1X-2010, which is implemented
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by wpa_supplicant.
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.SH SEE ALSO
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.br
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.BR ip-link (8)
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.BR wpa_supplicant (8)
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.SH AUTHOR
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Sabrina Dubroca <sd@queasysnail.net>
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