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author | rebortg <github@ghlr.de> | 2020-11-29 21:52:28 +0100 |
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committer | rebortg <github@ghlr.de> | 2020-11-29 21:52:28 +0100 |
commit | 4abded8025a47990e58cd0a5fe9b96e38f4a3715 (patch) | |
tree | 2a6ebaa9dcf96a10e95577ae446c3897b0938fd4 /docs/interfaces/macsec.rst | |
parent | e7f01e6efc8578603592ff86c031d46f1f1f9d82 (diff) | |
download | vyos-documentation-4abded8025a47990e58cd0a5fe9b96e38f4a3715.tar.gz vyos-documentation-4abded8025a47990e58cd0a5fe9b96e38f4a3715.zip |
arrange: interfaces
Diffstat (limited to 'docs/interfaces/macsec.rst')
-rw-r--r-- | docs/interfaces/macsec.rst | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/docs/interfaces/macsec.rst b/docs/interfaces/macsec.rst deleted file mode 100644 index ebc8f151..00000000 --- a/docs/interfaces/macsec.rst +++ /dev/null @@ -1,191 +0,0 @@ -.. _macsec-interface: - -###### -MACsec -###### - -MACsec is an IEEE standard (IEEE 802.1AE) for MAC security, introduced in 2006. -It defines a way to establish a protocol independent connection between two -hosts with data confidentiality, authenticity and/or integrity, using -GCM-AES-128. MACsec operates on the Ethernet layer and as such is a layer 2 -protocol, which means it's designed to secure traffic within a layer 2 network, -including DHCP or ARP requests. It does not compete with other security -solutions such as IPsec (layer 3) or TLS (layer 4), as all those solutions are -used for their own specific use cases. - -************* -Configuration -************* - -Common interface configuration -============================== - -.. cmdinclude:: ../_include/interface-common-with-dhcp.txt - :var0: macsec - :var1: macsec0 - -MACsec options -============== - -.. cfgcmd:: set interfaces macsec <interface> security cipher [gcm-aes-128] - - Select cipher suite used for cryptographic operations. This setting is - mandatory. - - .. note:: gcm-aes-256 support planned once iproute2 package is updated to - version >=5.2. - -.. cfgcmd:: set interfaces macsec <interface> security encrypt - - MACsec only provides authentication by default, encryption is optional. This - command will enable encryption for all outgoing packets. - -.. cfgcmd:: set interfaces macsec <interface> source-interface <physical-source> - - A physical interface is required to connect this MACsec instance to. Traffic - leaving this interfac will now be authenticated/encrypted. - -Key Management --------------- - -:abbr:`MKA (MACsec Key Agreement protocol)` is used to synchronize keys between -individual peers. - -.. cfgcmd:: set interfaces macsec <interface> security mka cak <key> - - IEEE 802.1X/MACsec pre-shared key mode. This allows to configure MACsec with - a pre-shared key using a (CAK,CKN) pair. - -.. cfgcmd:: set interfaces macsec <interface> security mka ckn <key> - - CAK Name - -.. cfgcmd:: set interfaces macsec <interface> security mka priority <priority> - - The peer with lower priority will become the key server and start - distributing SAKs. - -Replay protection ------------------ - -.. cfgcmd:: set interfaces macsec <interface> security replay-window <window> - - IEEE 802.1X/MACsec replay protection window. This determines a window in which - replay is tolerated, to allow receipt of frames that have been misordered by - the network. - - - ``0``: No replay window, strict check - - ``1-4294967295``: Number of packets that could be misordered - -********* -Operation -********* - -.. opcmd:: run generate macsec mka-cak - - Generate :abbr:`MKA (MACsec Key Agreement protocol)` CAK key - - .. code-block:: none - - vyos@vyos:~$ generate macsec mka-cak - 20693b6e08bfa482703a563898c9e3ad - - -.. opcmd:: run generate macsec mka-ckn - - Generate :abbr:`MKA (MACsec Key Agreement protocol)` CAK key - - .. code-block:: none - - vyos@vyos:~$ generate macsec mka-ckn - 88737efef314ee319b2cbf30210a5f164957d884672c143aefdc0f5f6bc49eb2 - -.. opcmd:: show interfaces macsec - - List all MACsec interfaces - - .. code-block:: none - - vyos@vyos:~$ show interfaces macsec - 17: macsec1: protect on validate strict sc off sa off encrypt on send_sci on end_station off scb off replay off - cipher suite: GCM-AES-128, using ICV length 16 - TXSC: 005056bfefaa0001 on SA 0 - 20: macsec0: protect on validate strict sc off sa off encrypt off send_sci on end_station off scb off replay off - cipher suite: GCM-AES-128, using ICV length 16 - TXSC: 005056bfefaa0001 on SA 0 - -.. opcmd:: show interfaces macsec <interface> - - Show specific MACsec interface information - - .. code-block:: none - - vyos@vyos:~$ show interfaces macsec macsec1 - 17: macsec1: protect on validate strict sc off sa off encrypt on send_sci on end_station off scb off replay off - cipher suite: GCM-AES-128, using ICV length 16 - TXSC: 005056bfefaa0001 on SA 0 - -******** -Examples -******** - -* Two routers connected both via eth1 through an untrusted switch -* R1 has 192.0.2.1/24 & 2001:db8::1/64 -* R2 has 192.0.2.2/24 & 2001:db8::2/64 - -**R1** - -.. code-block:: none - - set interfaces macsec macsec1 address '192.0.2.1/24' - set interfaces macsec macsec1 address '2001:db8::1/64' - set interfaces macsec macsec1 security cipher 'gcm-aes-128' - set interfaces macsec macsec1 security encrypt - set interfaces macsec macsec1 security mka cak '232e44b7fda6f8e2d88a07bf78a7aff4' - set interfaces macsec macsec1 security mka ckn '40916f4b23e3d548ad27eedd2d10c6f98c2d21684699647d63d41b500dfe8836' - set interfaces macsec macsec1 source-interface 'eth1' - -**R2** - -.. code-block:: none - - set interfaces macsec macsec1 address '192.0.2.2/24' - set interfaces macsec macsec1 address '2001:db8::2/64' - set interfaces macsec macsec1 security cipher 'gcm-aes-128' - set interfaces macsec macsec1 security encrypt - set interfaces macsec macsec1 security mka cak '232e44b7fda6f8e2d88a07bf78a7aff4' - set interfaces macsec macsec1 security mka ckn '40916f4b23e3d548ad27eedd2d10c6f98c2d21684699647d63d41b500dfe8836' - set interfaces macsec macsec1 source-interface 'eth1' - -Pinging (IPv6) the other host and intercepting the traffic in ``eth1`` will -show you the content is encrypted. - -.. code-block:: none - - 17:35:44.586668 00:50:56:bf:ef:aa > 00:50:56:b3:ad:d6, ethertype Unknown (0x88e5), length 150: - 0x0000: 2c00 0000 000a 0050 56bf efaa 0001 d9fb ,......PV....... - 0x0010: 920a 8b8d 68ed 9609 29dd e767 25a4 4466 ....h...)..g%.Df - 0x0020: 5293 487b 9990 8517 3b15 22c7 ea5c ac83 R.H{....;."..\.. - 0x0030: 4c6e 13cf 0743 f917 2c4e 694e 87d1 0f09 Ln...C..,NiN.... - 0x0040: 0f77 5d53 ed75 cfe1 54df 0e5a c766 93cb .w]S.u..T..Z.f.. - 0x0050: c4f2 6e23 f200 6dfe 3216 c858 dcaa a73b ..n#..m.2..X...; - 0x0060: 4dd1 9358 d9e4 ed0e 072f 1acc 31c4 f669 M..X...../..1..i - 0x0070: e93a 9f38 8a62 17c6 2857 6ac5 ec11 8b0e .:.8.b..(Wj..... - 0x0080: 6b30 92a5 7ccc 720b k0..|.r. - -Disabling the encryption on the link by removing ``security encrypt`` will show -the unencrypted but authenticated content. - -.. code-block:: none - - 17:37:00.746155 00:50:56:bf:ef:aa > 00:50:56:b3:ad:d6, ethertype Unknown (0x88e5), length 150: - 0x0000: 2000 0000 0009 0050 56bf efaa 0001 86dd .......PV....... - 0x0010: 6009 86f3 0040 3a40 2001 0db8 0000 0000 `....@:@........ - 0x0020: 0000 0000 0000 0001 2001 0db8 0000 0000 ................ - 0x0030: 0000 0000 0000 0002 8100 d977 0f30 0003 ...........w.0.. - 0x0040: 1ca0 c65e 0000 0000 8d93 0b00 0000 0000 ...^............ - 0x0050: 1011 1213 1415 1617 1819 1a1b 1c1d 1e1f ................ - 0x0060: 2021 2223 2425 2627 2829 2a2b 2c2d 2e2f .!"#$%&'()*+,-./ - 0x0070: 3031 3233 3435 3637 87d5 eed3 3a39 d52b 01234567....:9.+ - 0x0080: a282 c842 5254 ef28 ...BRT.( - |