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 "2009-12-09">
5
<!ENTITY TIMESTAMP "2009-09-10">
6
6
<!ENTITY % common SYSTEM "common.ent">
332
332
checker program, and interval between checks can be configured
333
333
both globally and per client; see <citerefentry>
334
334
<refentrytitle>mandos-clients.conf</refentrytitle>
335
<manvolnum>5</manvolnum></citerefentry>. A client successfully
336
receiving its password will also be treated as a successful
335
<manvolnum>5</manvolnum></citerefentry>.
453
451
backtrace. This could be considered a feature.
456
Currently, if a client is disabled due to having timed out, the
457
server does not record this fact onto permanent storage. This
458
has some security implications, see <xref linkend="clients"/>.
454
Currently, if a client is declared <quote>invalid</quote> due to
455
having timed out, the server does not record this fact onto
456
permanent storage. This has some security implications, see
457
<xref linkend="clients"/>.
461
460
There is currently no way of querying the server of the current
550
549
If a client is compromised, its downtime should be duly noted
551
by the server which would therefore disable the client. But
552
if the server was ever restarted, it would re-read its client
553
list from its configuration file and again regard all clients
554
therein as enabled, and hence eligible to receive their
555
passwords. Therefore, be careful when restarting servers if
556
it is suspected that a client has, in fact, been compromised
557
by parties who may now be running a fake Mandos client with
558
the keys from the non-encrypted initial <acronym>RAM</acronym>
559
image of the client host. What should be done in that case
560
(if restarting the server program really is necessary) is to
561
stop the server program, edit the configuration file to omit
562
any suspect clients, and restart the server program.
550
by the server which would therefore declare the client
551
invalid. But if the server was ever restarted, it would
552
re-read its client list from its configuration file and again
553
regard all clients therein as valid, and hence eligible to
554
receive their passwords. Therefore, be careful when
555
restarting servers if it is suspected that a client has, in
556
fact, been compromised by parties who may now be running a
557
fake Mandos client with the keys from the non-encrypted
558
initial <acronym>RAM</acronym> image of the client host. What
559
should be done in that case (if restarting the server program
560
really is necessary) is to stop the server program, edit the
561
configuration file to omit any suspect clients, and restart
565
565
For more details on client-side security, see