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This file documents the next steps to take after installation of the
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Debian package, and also contain some notes specific to the Debian
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packaging which are not also in the manual.
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* Adding a Client Password to the Server
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The server must be given a password to give back to the client on
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/usr/lib/$(dpkg-architecture -qDEB_HOST_MULTIARCH \
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)/mandos/plugins.d/mandos-client \
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--pubkey=/etc/keys/mandos/pubkey.txt \
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--seckey=/etc/keys/mandos/seckey.txt; echo
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--seckey=/etc/keys/mandos/seckey.txt \
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--tls-privkey=/etc/keys/mandos/tls-privkey.pem \
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--tls-pubkey=/etc/keys/mandos/tls-pubkey.pem; echo
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This command should retrieve the password from the server, decrypt
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it, and output it to standard output. There it can be verified to
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automatically detected. If this should result in incorrect
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interfaces, edit the DEVICE setting in the
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"/etc/initramfs-tools/initramfs.conf" file. (The default setting is
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empty, meaning it will autodetect the interface.) *If* the DEVICE
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empty, meaning it will autodetect the interfaces.) *If* the DEVICE
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setting is changed, it will be necessary to update the initrd image
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by running the command
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by running this command:
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(For initramfs-tools:)
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update-initramfs -k all -u
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dpkg-reconfigure dracut
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The device can also be overridden at boot time on the Linux kernel
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command line using the sixth colon-separated field of the "ip="
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Note that since the network interfaces are used in the initial RAM
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disk environment, the network interfaces *must* exist at that stage.
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Thus, an interface can *not* be a pseudo-interface such as "br0" or
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"tun0"; instead, only real interfaces (such as "eth0") can be used.
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This can be overcome by writing a "network hook" program to create
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an interface (see mandos-client(8mandos)) and placing it in
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"/etc/mandos/network-hooks.d", from where it will be copied into the
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initial RAM disk. Example network hook scripts can be found in
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"/usr/share/doc/mandos-client/examples/network-hooks.d".
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"tun0"; instead, only real interfaces (such as "enp1s0" or "eth0")
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can be used. This can be overcome by writing a "network hook"
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program to create an interface (see mandos-client(8mandos)) and
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placing it in "/etc/mandos/network-hooks.d", from where it will be
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copied into the initial RAM disk. Example network hook scripts can
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be found in "/usr/share/doc/mandos-client/examples/network-hooks.d".
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* User-Supplied Plugins
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Any plugins found in "/etc/mandos/plugins.d" will override and add
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to the normal Mandos plugins. When adding or changing plugins, do
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not forget to update the initital RAM disk image:
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not forget to update the initial RAM disk image:
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(For initramfs-tools:)
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update-initramfs -k all -u
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dpkg-reconfigure dracut
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* Do *NOT* Edit "/etc/crypttab"
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"mandos=connect:<IP_ADDRESS>:<PORT_NUMBER>" on the kernel command
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For very advanced users, it it possible to specify simply
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"mandos=connect" on the kernel command line to make the system only
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set up the network (using the data in the "ip=" option) and not pass
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any extra "--connect" options to mandos-client at boot. For this to
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work, "--options-for=mandos-client:--connect=<ADDRESS>:<PORT>" needs
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to be manually added to the file "/etc/mandos/plugin-runner.conf".
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-- Teddy Hogeborn <teddy@recompile.se>, Mon, 29 Jun 2015 18:17:41 +0200
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For very advanced users, it is possible to specify "mandos=connect"
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on the kernel command line to make the system only set up the
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network (using the data in the "ip=" option) and not pass any extra
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"--connect" options to mandos-client at boot. For this to work,
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"--options-for=mandos-client:--connect=<ADDRESS>:<PORT>" needs to be
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manually added to the file "/etc/mandos/plugin-runner.conf" or, if
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dracut is used with systemd, the "--connect=<ADDRESS>:<PORT>"
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options needs to be added to an environment variable in an override
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file for the "ask-password-mandos" service, as detailed in the file
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"/usr/lib/dracut/modules.d/90mandos/ask-password-mandos.service".
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* Diffie-Hellman Parameters
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On installation, a file with Diffie-Hellman parameters,
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/etc/keys/mandos/dhparams.pem, will be generated and automatically
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installed into the initial RAM disk image and also used by the
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Mandos Client on boot. If different parameters are needed for
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policy or other reasons, simply replace the existing dhparams.pem
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file and update the initial RAM disk image.
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-- Teddy Hogeborn <teddy@recompile.se>, Sun, 8 Sep 2024 02:09:20 +0200
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debian/mandos-client.README.Debian
