1
* Adding a Client Password to the Server
3
The server must be given a password to give back to the client on
4
boot time. This password must be a one which can be used to unlock
5
the root file system device. On the *client*, run this command:
7
mandos-keygen --password
9
It will prompt for a password and output a config file section.
10
This output should be copied to the Mandos server and added to the
11
file "/etc/mandos/clients.conf" there.
13
* Testing that it Works (Without Rebooting)
15
After the server has been started with this client's key added, it
16
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
10
Make sure that the correct network interface is specified in the
11
DEVICE setting in the "/etc/initramfs-tools/initramfs.conf" file.
12
If this is changed, it will be necessary to update the initrd image
13
by doing "update-initramfs -k all -u". This setting can be
14
overridden at boot time on the Linux kernel command line using the
15
sixth colon-separated field of the "ip=" option; for exact syntax,
16
see the file "Documentation/nfsroot.txt" in the Linux source tree.
20
After the server has been started and this client's key added, it is
21
possible to verify that the correct password will be received by
17
22
this client by running the command, on the client:
19
MANDOSPLUGINHELPERDIR=/usr/lib/$(dpkg-architecture \
20
-qDEB_HOST_MULTIARCH)/mandos/plugin-helpers \
21
/usr/lib/$(dpkg-architecture -qDEB_HOST_MULTIARCH \
22
)/mandos/plugins.d/mandos-client \
24
# /usr/lib/mandos/plugins.d/mandos-client \
23
25
--pubkey=/etc/keys/mandos/pubkey.txt \
24
26
--seckey=/etc/keys/mandos/seckey.txt; echo
27
29
it, and output it to standard output. There it can be verified to
28
30
be the correct password, before rebooting.
32
* User-Supplied Plugins
34
Any plugins found in /etc/mandos/plugins.d will override and add to
35
the normal Mandos plugins. When adding or changing plugins, do not
36
forget to update the initital RAM disk image:
38
# update-initramfs -k all -u
40
* Do *NOT* Edit /etc/crypttab
42
It is NOT necessary to edit /etc/crypttab to specify
43
/usr/lib/mandos/plugin-runner as a keyscript for the root file
44
system; if no keyscript is given for the root file system, the
45
Mandos client will be the new default way for getting a password for
46
the root file system when booting.
32
50
If it ever should be necessary, the Mandos client can be temporarily
33
51
prevented from running at startup by passing the parameter
34
52
"mandos=off" to the kernel.
36
* Specifying a Client Network Interface
38
At boot time the network interfaces to use will by default be
39
automatically detected. If this should result in incorrect
40
interfaces, edit the DEVICE setting in the
41
"/etc/initramfs-tools/initramfs.conf" file. (The default setting is
42
empty, meaning it will autodetect the interface.) *If* the DEVICE
43
setting is changed, it will be necessary to update the initrd image
44
by running the command
46
update-initramfs -k all -u
48
The device can also be overridden at boot time on the Linux kernel
49
command line using the sixth colon-separated field of the "ip="
50
option; for exact syntax, read the documentation in the file
51
"/usr/share/doc/linux-doc-*/Documentation/filesystems/nfs/nfsroot.txt",
52
available in the "linux-doc-*" package.
54
Note that since the network interfaces are used in the initial RAM
55
disk environment, the network interfaces *must* exist at that stage.
56
Thus, an interface can *not* be a pseudo-interface such as "br0" or
57
"tun0"; instead, only real interfaces (such as "eth0") can be used.
58
This can be overcome by writing a "network hook" program to create
59
an interface (see mandos-client(8mandos)) and placing it in
60
"/etc/mandos/network-hooks.d", from where it will be copied into the
61
initial RAM disk. Example network hook scripts can be found in
62
"/usr/share/doc/mandos-client/examples/network-hooks.d".
64
* User-Supplied Plugins
66
Any plugins found in "/etc/mandos/plugins.d" will override and add
67
to the normal Mandos plugins. When adding or changing plugins, do
68
not forget to update the initital RAM disk image:
70
update-initramfs -k all -u
72
* Do *NOT* Edit "/etc/crypttab"
74
It is NOT necessary to edit "/etc/crypttab" to specify
75
"/usr/lib/mandos/plugin-runner" as a keyscript for the root file
76
system; if no keyscript is given for the root file system, the
77
Mandos client will be the new default way for getting a password for
78
the root file system when booting.
80
54
* Non-local Connection (Not Using ZeroConf)
82
56
If the "ip=" kernel command line option is used to specify a
83
57
complete IP address and device name, as noted above, it then becomes
84
58
possible to specify a specific IP address and port to connect to,
85
59
instead of using ZeroConf. The syntax for doing this is
86
"mandos=connect:<IP_ADDRESS>:<PORT_NUMBER>" on the kernel command
60
"mandos=connect:<IP_ADDRESS>:<PORT_NUMBER>".
62
Warning: this will cause the client to make exactly one attempt at
63
connecting, and then fail if it does not succeed.
89
65
For very advanced users, it it possible to specify simply
90
66
"mandos=connect" on the kernel command line to make the system only
added
removed
debian/mandos-client.README.Debian
