1
* Choose the Client Network Interface
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Please make sure that the correct network interface is specified in
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the DEVICE setting in the "/etc/initramfs-tools/initramfs.conf"
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file. If the setting is empty, the interface will be autodetected
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at boot time, which may not be correct. *If* the DEVICE setting is
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changed, it will be necessary to update the initrd image by running
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update-initramfs -k all -u
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The device can 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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option; for exact syntax, read the documentation in the file
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"/usr/share/doc/linux-doc-*/Documentation/filesystems/nfsroot.txt",
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available in the "linux-doc-*" package.
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Note that since this network interface is used in the initial RAM
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disk environment, the network interface *must* exist at that stage.
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Thus, the interface can *not* be a pseudo-interface such as "br0" or
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"tun0"; instead, a real interface (such as "eth0") must be used.
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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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boot time. This password must be a one which can be used to unlock
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the root file system device. On the *client*, run this command:
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mandos-keygen --password
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It will prompt for a password and output a config file section.
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This output should be copied to the Mandos server and added to the
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file "/etc/mandos/clients.conf" there.
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* Testing that it Works (Without Rebooting)
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After the server has been started with this client's key added, it
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is possible to verify that the correct password will be received by
3
A client key has been automatically created in /etc/keys/mandos.
4
The next step is to run "mandos-keygen --password" to get a config
5
file section. This should be appended to /etc/mandos/clients.conf
8
* Use the Correct Network Interface
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If some other network interface than "eth0" is used, it will be
11
necessary to edit /etc/mandos/plugin-runner.conf to uncomment and
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change the line there. If this is done, it will be necessary to
13
update the initrd image by doing "update-initramfs -k all -u".
17
After the server has been started and this client's key added, it is
18
possible to verify that the correct password will be received by
39
19
this client by running the command, on the client:
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/usr/lib/mandos/plugins.d/mandos-client \
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# /usr/lib/mandos/plugins.d/mandos-client \
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22
--pubkey=/etc/keys/mandos/pubkey.txt \
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23
--seckey=/etc/keys/mandos/seckey.txt; echo
45
25
This command should retrieve the password from the server, decrypt
46
it, and output it to standard output. There it can be verified to
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be the correct password, before rebooting.
26
it, and output it to standard output. It is now possible to verify
27
the correctness of the password before rebooting.
49
29
* 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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update-initramfs -k all -u
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* Do *NOT* Edit "/etc/crypttab"
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It is NOT necessary to edit "/etc/crypttab" to specify
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"/usr/lib/mandos/plugin-runner" as a keyscript for the root file
31
Any plugins found in /etc/mandos/plugins.d will override and add to
32
the normal Mandos plugins. When adding or changing plugins, do not
33
forget to update the initital RAM disk image:
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# update-initramfs -k all -u
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* Do *NOT* Edit /etc/crypttab
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It is NOT necessary to edit /etc/crypttab to specify
40
/usr/lib/mandos/plugin-runner as a keyscript for the root file
61
41
system; if no keyscript is given for the root file system, the
62
42
Mandos client will be the new default way for getting a password for
63
43
the root file system when booting.
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If it ever should be necessary, the Mandos client can be temporarily
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prevented from running at startup by passing the parameter
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"mandos=off" to the kernel.
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* Non-local Connection (Not Using ZeroConf)
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If the "ip=" kernel command line option is used to specify a
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complete IP address and device name, as noted above, it then becomes
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possible to specify a specific IP address and port to connect to,
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instead of using ZeroConf. The syntax for doing this is
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"mandos=connect:<IP_ADDRESS>:<PORT_NUMBER>".
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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@fukt.bsnet.se>, Mon, 27 Sep 2010 19:53:21 +0200
45
-- Teddy Hogeborn <teddy@fukt.bsnet.se>, Sun, 5 Oct 2008 19:04:26 +0200
added
removed
debian/mandos-client.README.Debian
