Maybe I'm too paranoid, but...

This is a discussion on Maybe I'm too paranoid, but... within the Linux Security forums, part of the System Security and Security Related category; I find it *very* strange that this morning I did not receive mail, as I do on a daily basis, ...


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  #1 (permalink)  
Old 12-10-2004
Gaétan Martineau
 
Posts: n/a
Default Maybe I'm too paranoid, but...

I find it *very* strange that this morning I did not receive mail, as I
do on a daily basis, from my router/firewall status. You see, my
crontab show, among other:

00 05 * * * (/root/bin/chkrootkit_check)
00 05 * * * (/root/bin/tripwire_check)
00 05 * * * (/root/bin/netstat_check)
00 05 * * * (/root/bin/mail_ip_address)

These scripts perform various security checks and do mail the result to
me (below edited as: myaddress@mydomain) The time is set right and
/var/log/maillog shows (below) that the messages have been sent.
However, I do not see any traces of it, wheter in spam folder or anywhere.


Why could I not receive these messages?

I changed the time to 9h00 in the crontab and then I received the
messages. Why not at 05h00...? ???

I guess a message can be lost. But this, to me would be very unusual.
Opinions and ideas are welcome.

Gaetan



Dec 10 05:00:03 chouette sendmail[26367]: iBAA02j26367: from=root,
size=151, class=0, nrcpts=1,
msgid=<200412101000.iBAA02j26367@localhost.localdo main>,
relay=root@localhost
Dec 10 05:00:03 chouette sendmail[26373]: iBAA03226373: from=root,
size=64, class=0, nrcpts=1,
msgid=<200412101000.iBAA03226373@localhost.localdo main>,
relay=root@localhost
Dec 10 05:00:09 chouette sendmail[26397]: iBAA03226373:
to=myaddress@mydomain, ctladdr=root (0/0), delay=00:00:06,
xdelay=00:00:05, mailer=esmtp, pri=30064, relay=mail.mediom.qc.ca.
[199.243.212.197], dsn=2.0.0, stat=Sent (iBA9wHGa003272 Message accepted
for delivery)
Dec 10 05:00:09 chouette sendmail[26396]: iBAA02j26367:
to=myaddress@mydomain, ctladdr=root (0/0), delay=00:00:07,
xdelay=00:00:05, mailer=esmtp, pri=30151, relay=mail.mediom.qc.ca.
[199.243.212.197], dsn=2.0.0, stat=Sent (iBA9wHGa003271 Message accepted
for delivery)
Dec 10 05:01:54 chouette sendmail[27231]: iBAA1rx27231: from=root,
size=3719, class=0, nrcpts=1,
msgid=<200412101001.iBAA1rx27231@localhost.localdo main>,
relay=root@localhost
Dec 10 05:02:00 chouette sendmail[27234]: iBAA1rx27231:
to=myaddress@mydomain, ctladdr=root (0/0), delay=00:00:07,
xdelay=00:00:06, mailer=esmtp, pri=33719, relay=mail.mediom.qc.ca.
[199.243.212.197], dsn=2.0.0, stat=Sent (iBAA07Ga003658 Message accepted
for delivery)
Dec 10 05:08:32 chouette sendmail[27242]: iBAA8WP27242: from=root,
size=4999, class=0, nrcpts=1,
msgid=<200412101008.iBAA8WP27242@localhost.localdo main>,
relay=root@localhost
Dec 10 05:08:33 chouette sendmail[27237]: iBAA70L27237: from=root,
size=541, class=0, nrcpts=1,
msgid=<200412101007.iBAA70L27237@localhost.localdo main>,
relay=root@localhost
Dec 10 05:08:34 chouette sendmail[27237]: iBAA70L27237: to=root,
ctladdr=root (0/0), delay=00:01:34, xdelay=00:00:01, mailer=local,
pri=30541, dsn=2.0.0, stat=Sent
Dec 10 05:08:38 chouette sendmail[27245]: iBAA8WP27242:
to=myaddress@mydomain, ctladdr=root (0/0), delay=00:00:06,
xdelay=00:00:05, mailer=esmtp, pri=34999, relay=mail.mediom.qc.ca.
[199.243.212.197], dsn=2.0.0, stat=Sent (iBAA6kGa005081 Message accepted
for delivery)
Dec 10 07:29:37 chouette sendmail[27525]: iBACTbx27525: from=root,
size=5006, class=0, nrcpts=1,
msgid=<200412101229.iBACTbx27525@localhost.localdo main>,
relay=root@localhost
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  #2 (permalink)  
Old 12-10-2004
Mike
 
Posts: n/a
Default Re: Maybe I'm too paranoid, but...

Gaétan Martineau <gmarti@pasdespammediom.qc.ca> wrote in news:O5iud.39171
$dC3.1234033@news20.bellglobal.com:

> Why could I not receive these messages?
>


Only 2 questions:
a) was the server up at 5am? (Power shortage does happen ;-)
b) do you have anacron running to catch up in case the above is true?

If the server was up OR it was down but you have anacron, it smells
fishy...
Cheers,

--
Nekromancer
PUF (FAQ) del grupo:
http://usuarios.lycos.es/n3kr0m4nc3r/
Apuntes de seguridad:
http://www.pclandia.net/nekromancer/

"El nivel de conocimientos adquiridos es
inversamente proporcional a la temperatura del cafe"
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  #3 (permalink)  
Old 12-11-2004
Hue-Bond
 
Posts: n/a
Default Re: Maybe I'm too paranoid, but...

Mike, vie20041210@17:59:51(CET):
>
> a) was the server up at 5am? (Power shortage does happen ;-)


Of course it was. Did you see the logs the OP showed us? ;^)


--
David Serrano
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  #4 (permalink)  
Old 12-13-2004
Mike
 
Posts: n/a
Default Re: Maybe I'm too paranoid, but...

Hue-Bond <responder_solo_en_el_grupo@yahoo.es> wrote in
news:slrncrmi1m.260.responder_solo_en_el_grupo@gen us.hue-bond.com:

> Of course it was. Did you see the logs the OP showed us? ;^)
>


Nope, I stopped at the signature ;-)

--
Nekromancer
PUF (FAQ) del grupo:
http://usuarios.lycos.es/n3kr0m4nc3r/
Apuntes de seguridad:
http://www.pclandia.net/nekromancer/

"El nivel de conocimientos adquiridos es
inversamente proporcional a la temperatura del cafe"
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