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.
1
This file documents the next steps to take after installation of the
2
Debian package, and also contain some notes specific to the Debian
3
packaging which are not also in the manual.
23
5
* Adding a Client Password to the Server
38
20
is possible to verify that the correct password will be received by
39
21
this client by running the command, on the client:
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/usr/lib/mandos/plugins.d/mandos-client \
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MANDOSPLUGINHELPERDIR=/usr/lib/$(dpkg-architecture \
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-qDEB_HOST_MULTIARCH)/mandos/plugin-helpers \
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/usr/lib/$(dpkg-architecture -qDEB_HOST_MULTIARCH \
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)/mandos/plugins.d/mandos-client \
42
27
--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
45
32
This command should retrieve the password from the server, decrypt
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33
it, and output it to standard output. There it can be verified to
47
34
be the correct password, before rebooting.
38
If it ever should be necessary, the Mandos client can be temporarily
39
prevented from running at startup by passing the parameter
40
"mandos=off" to the kernel.
42
* Specifying a Client Network Interface
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At boot time the network interfaces to use will by default be
45
automatically detected. If this should result in incorrect
46
interfaces, edit the DEVICE setting in the
47
"/etc/initramfs-tools/initramfs.conf" file. (The default setting is
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empty, meaning it will autodetect the interfaces.) *If* the DEVICE
49
setting is changed, it will be necessary to update the initrd image
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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
58
The device can also be overridden at boot time on the Linux kernel
59
command line using the sixth colon-separated field of the "ip="
60
option; for exact syntax, read the documentation in the file
61
"/usr/share/doc/linux-doc-*/Documentation/filesystems/nfs/nfsroot.txt",
62
available in the "linux-doc-*" package.
64
Note that since the network interfaces are used in the initial RAM
65
disk environment, the network interfaces *must* exist at that stage.
66
Thus, an interface can *not* be a pseudo-interface such as "br0" or
67
"tun0"; instead, only real interfaces (such as "enp1s0" or "eth0")
68
can be used. This can be overcome by writing a "network hook"
69
program to create an interface (see mandos-client(8mandos)) and
70
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".
49
74
* User-Supplied Plugins
51
76
Any plugins found in "/etc/mandos/plugins.d" will override and add
52
77
to the normal Mandos plugins. When adding or changing plugins, do
53
not forget to update the initital RAM disk image:
78
not forget to update the initial RAM disk image:
80
(For initramfs-tools:)
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81
update-initramfs -k all -u
84
dpkg-reconfigure dracut
57
86
* Do *NOT* Edit "/etc/crypttab"
62
91
Mandos client will be the new default way for getting a password for
63
92
the root file system when booting.
67
If it ever should be necessary, the Mandos client can be temporarily
68
prevented from running at startup by passing the parameter
69
"mandos=off" to the kernel.
71
94
* Non-local Connection (Not Using ZeroConf)
73
96
If the "ip=" kernel command line option is used to specify a
74
97
complete IP address and device name, as noted above, it then becomes
75
98
possible to specify a specific IP address and port to connect to,
76
99
instead of using ZeroConf. The syntax for doing this is
77
"mandos=connect:<IP_ADDRESS>:<PORT_NUMBER>".
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Warning: this will cause the client to make exactly one attempt at
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connecting, and then fail if it does not succeed.
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For very advanced users, it it possible to specify simply
83
"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".
89
-- Teddy Hogeborn <teddy@fukt.bsnet.se>, Sun, 26 Sep 2010 20:08:05 +0200
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"mandos=connect:<IP_ADDRESS>:<PORT_NUMBER>" on the kernel command
103
For very advanced users, it is possible to specify "mandos=connect"
104
on the kernel command line to make the system only set up the
105
network (using the data in the "ip=" option) and not pass any extra
106
"--connect" options to mandos-client at boot. For this to work,
107
"--options-for=mandos-client:--connect=<ADDRESS>:<PORT>" needs to be
108
manually added to the file "/etc/mandos/plugin-runner.conf" or, if
109
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
111
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,
117
/etc/keys/mandos/dhparams.pem, will be generated and automatically
118
installed into the initial RAM disk image and also used by the
119
Mandos Client on boot. If different parameters are needed for
120
policy or other reasons, simply replace the existing dhparams.pem
121
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
added
removed
debian/mandos-client.README.Debian
