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T971 Document the use of ssh key options

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While adding " support in T971, I noticed that `options` weren't
documented at all. This commit adds documentation for ssh options,
including the use of "

(cherry picked from commit 1b93c11014125863c1f5baa2e929893c9195a7a5)
This commit is contained in:
Paul Lettington 2021-09-05 21:30:26 +01:00 committed by Christian Poessinger
parent 7479329761
commit a0ddc0459e
1 changed files with 11 additions and 1 deletions
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12
docs/configuration/system/login.rst
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@ -74,6 +74,14 @@ The third part is simply an identifier, and is for your own reference.
.. note:: You can assign multiple keys to the same user by using a unique
identifier per SSH key.
.. cfgcmd:: set system login user <username> authentication public-keys
<identifier> options <options>
Set the options for this public key. See the ssh ``authorized_keys`` man page
for details of what you can specify here. To place a ``"`` character in the
options field, use ``&quot;``, for example ``from=&quot;10.0.0.0/24&quot;``
to restrict where the user may connect from when using this key.
.. cfgcmd:: loadkey <username> <location>
SSH keys can not only be specified on the command-line but also loaded for
@ -92,12 +100,14 @@ Example
-------
In the following example, both `User1` and `User2` will be able to SSH into
VyOS as user ``vyos`` using their very own keys.
VyOS as user ``vyos`` using their very own keys. `User1` is restricted to only
be able to connect from a single IP address.
.. code-block:: none
set system login user vyos authentication public-keys 'User1' key "AAAAB3Nz...KwEW"
set system login user vyos authentication public-keys 'User1' type ssh-rsa
set system login user vyos authentication public-keys 'User1' options "from=&quot;192.168.0.100&quot;"
set system login user vyos authentication public-keys 'User2' key "AAAAQ39x...fbV3"
set system login user vyos authentication public-keys 'User2' type ssh-rsa