2
2
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3
3
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4
4
<!ENTITY COMMANDNAME "mandos">
5
<!ENTITY TIMESTAMP "2009-02-15">
5
<!ENTITY TIMESTAMP "2010-09-26">
6
6
<!ENTITY % common SYSTEM "common.ent">
327
328
The server will, by default, continually check that the clients
328
329
are still up. If a client has not been confirmed as being up
329
330
for some time, the client is assumed to be compromised and is no
330
longer eligible to receive the encrypted password. The timeout,
331
longer eligible to receive the encrypted password. (Manual
332
intervention is required to re-enable a client.) The timeout,
331
333
checker program, and interval between checks can be configured
332
334
both globally and per client; see <citerefentry>
333
335
<refentrytitle>mandos-clients.conf</refentrytitle>
334
<manvolnum>5</manvolnum></citerefentry>.
336
<manvolnum>5</manvolnum></citerefentry>. A client successfully
337
receiving its password will also be treated as a successful
342
<refsect1 id="approval">
343
<title>APPROVAL</title>
345
The server can be configured to require manual approval for a
346
client before it is sent its secret. The delay to wait for such
347
approval and the default action (approve or deny) can be
348
configured both globally and per client; see <citerefentry>
349
<refentrytitle>mandos-clients.conf</refentrytitle>
350
<manvolnum>5</manvolnum></citerefentry>. By default all clients
351
will be approved immediately without delay.
354
This can be used to deny a client its secret if not manually
355
approved within a specified time. It can also be used to make
356
the server delay before giving a client its secret, allowing
357
optional manual denying of this specific client.
338
362
<refsect1 id="logging">
351
375
The server will by default provide a D-Bus system bus interface.
352
376
This interface will only be accessible by the root user or a
353
Mandos-specific user, if such a user exists.
377
Mandos-specific user, if such a user exists. For documentation
378
of the D-Bus API, see the file <filename>DBUS-API</filename>.
415
439
<term><filename>/var/run/mandos.pid</filename></term>
418
The file containing the process id of
419
<command>&COMMANDNAME;</command>.
442
The file containing the process id of the
443
<command>&COMMANDNAME;</command> process started last.
450
474
backtrace. This could be considered a feature.
453
Currently, if a client is declared <quote>invalid</quote> due to
454
having timed out, the server does not record this fact onto
455
permanent storage. This has some security implications, see
456
<xref linkend="clients"/>.
459
There is currently no way of querying the server of the current
460
status of clients, other than analyzing its <systemitem
461
class="service">syslog</systemitem> output.
477
Currently, if a client is disabled due to having timed out, the
478
server does not record this fact onto permanent storage. This
479
has some security implications, see <xref linkend="clients"/>.
464
482
There is no fine-grained control over logging and debug output.
548
566
If a client is compromised, its downtime should be duly noted
549
by the server which would therefore declare the client
550
invalid. But if the server was ever restarted, it would
551
re-read its client list from its configuration file and again
552
regard all clients therein as valid, and hence eligible to
553
receive their passwords. Therefore, be careful when
554
restarting servers if it is suspected that a client has, in
555
fact, been compromised by parties who may now be running a
556
fake Mandos client with the keys from the non-encrypted
557
initial <acronym>RAM</acronym> image of the client host. What
558
should be done in that case (if restarting the server program
559
really is necessary) is to stop the server program, edit the
560
configuration file to omit any suspect clients, and restart
567
by the server which would therefore disable the client. But
568
if the server was ever restarted, it would re-read its client
569
list from its configuration file and again regard all clients
570
therein as enabled, and hence eligible to receive their
571
passwords. Therefore, be careful when restarting servers if
572
it is suspected that a client has, in fact, been compromised
573
by parties who may now be running a fake Mandos client with
574
the keys from the non-encrypted initial <acronym>RAM</acronym>
575
image of the client host. What should be done in that case
576
(if restarting the server program really is necessary) is to
577
stop the server program, edit the configuration file to omit
578
any suspect clients, and restart the server program.
564
581
For more details on client-side security, see
added
removed
mandos.xml
