Next dc9723 meeting

2011-05-10 Thread amichay p. k.
dc9723 next meeting will be held on 17.5.2011 at the Tel-Aviv University,
Rosenblat Auditorium, at 19:00.
* For directions, please see the Directions page: http://dc9723.org/Meetings
* For the previous meetings, please see the "meetings" page:
http://dc9723.org/Directions
* For video of the talks, visit this page:
http://www.youtube.com/user/dcg9723
 Schedule: * 19:00 - 19:30 - Gathering and opening remarks
* 19:30 - 20:30 - The Turtles Project: Design and Implementation of Nested
Virtualization - Muli Ben-Yehuda.
* 20:30 - 20:40 - Break
* 20:40 - 21:40 - Introduction to Social Engineering (Temporary name) - Roy
Saar.

The Israeli DefCon group is a group designed to serve as a place for
discussion for the growing community of people involved in information
security in Israel.
We meet on the third Tuesday of the month in a central Tel Aviv location,
and have talks and activities.

Our meetings are held at the Tel Aviv University, courtesy of StarTau, the
entrepreneurial center of TAU.

The meetings are open and free, and we try to include content that caters
for both beginners as well as more advanced.

If you are a Hacker / Security practitioner / Just want to expand your
horizons, you're welcome to join us!

For more information about the group, please visit our website at
www.dc9723.org.


-- 
Regards, Amichay.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * *
Web site developer, and an independent security researcher.

My Blog: http://am1chay.blogspot.com/. For permission to read, please
contact me.
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sending mail from the command line

2011-05-10 Thread Dan Shimshoni
I am trying this from a Linux machine which is connected to the
internet via PPPoE ( for the test, no firewall):
 mail -s "test" danshi...@gmail.com < /dev/null

and also this
 mail -s "test" danshi...@gmail.com
enter
add some text
enter
ctrl-d


I don't get any mail in danshi...@gmail.com.

What is wrong here ? what should I do in order to send successfully an
e-mail from the command line with "mail" ?

DS

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Re: sending mail from the command line

2011-05-10 Thread Jonathan Ben Avraham

Hi Dan,
Check the configuration of the email server on the machine on which you 
are working. It might be not configured or it might be misconfigured. In 
this case, it will be happy to accept your email sent using "mail" but 
wont know what to do with it and wont even be able to tell you.


Start by looking at /var/log/maillog (for Sendmail installations) or 
/var/log/mail.log (commonly used in Postfix installations).

Hag Sameach,

 - yba


On Tue, 10 May 2011, Dan Shimshoni wrote:


Date: Tue, 10 May 2011 14:17:15 +0300
From: Dan Shimshoni 
To: linux-il 
Subject: sending mail from the command line

I am trying this from a Linux machine which is connected to the
internet via PPPoE ( for the test, no firewall):
mail -s "test" danshi...@gmail.com < /dev/null

and also this
mail -s "test" danshi...@gmail.com
enter
add some text
enter
ctrl-d


I don't get any mail in danshi...@gmail.com.

What is wrong here ? what should I do in order to send successfully an
e-mail from the command line with "mail" ?

DS

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Re: sending mail from the command line

2011-05-10 Thread Constantine Shulyupin
I use msmtp

with msmtprc:

account default
auth on
tls on
tls_starttls on
tls_trust_file /etc/ssl/certs/ca-certificates.crt
syslog LOG_MAIL
domain .net
from X

account gmail : default
host smtp.gmail.com
port 587
user x...@gmail.com
password 


On Tue, May 10, 2011 at 2:17 PM, Dan Shimshoni  wrote:
> I am trying this from a Linux machine which is connected to the
> internet via PPPoE ( for the test, no firewall):
>  mail -s "test" danshi...@gmail.com < /dev/null
>
> and also this
>  mail -s "test" danshi...@gmail.com
> enter
> add some text
> enter
> ctrl-d
>
>
> I don't get any mail in danshi...@gmail.com.
>
> What is wrong here ? what should I do in order to send successfully an
> e-mail from the command line with "mail" ?
>
> DS
>
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-- 
Constantine Shulyupin
http://www.MakeLinux.co.il/
Embedded Linux Systems,
Device Drivers, TI DaVinci

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Re: sending mail from the command line

2011-05-10 Thread Dan Shimshoni
Thanks!
I use sendmail.
I see this in /var/log/maillog:

 localhost sendmail[4900]: p4AEvbvW004900: to=danshi...@gmail.com,
ctladdr=root (0/0), delay=00:00:01, xdelay=00:00:00, mailer=relay,
pri=30225, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent
(p4AEvcRG004901 Message accepted for delivery)

it says stat=Sent, yet I do not get that mail.
I suppose this is some sendmail conf problem.
Did anyone have tips on sendmail configuration? there seems too much
about it on the web for simple configuration (for me it is enough only
to send mail, don't need to receive with sendmail)


On Tue, May 10, 2011 at 2:29 PM, Jonathan Ben Avraham  wrote:
> Hi Dan,
> Check the configuration of the email server on the machine on which you are
> working. It might be not configured or it might be misconfigured. In this
> case, it will be happy to accept your email sent using "mail" but wont know
> what to do with it and wont even be able to tell you.
>
> Start by looking at /var/log/maillog (for Sendmail installations) or
> /var/log/mail.log (commonly used in Postfix installations).
> Hag Sameach,
>
>  - yba
>
>
> On Tue, 10 May 2011, Dan Shimshoni wrote:
>
>> Date: Tue, 10 May 2011 14:17:15 +0300
>> From: Dan Shimshoni 
>> To: linux-il 
>> Subject: sending mail from the command line
>>
>> I am trying this from a Linux machine which is connected to the
>> internet via PPPoE ( for the test, no firewall):
>> mail -s "test" danshi...@gmail.com < /dev/null
>>
>> and also this
>> mail -s "test" danshi...@gmail.com
>> enter
>> add some text
>> enter
>> ctrl-d
>>
>>
>> I don't get any mail in danshi...@gmail.com.
>>
>> What is wrong here ? what should I do in order to send successfully an
>> e-mail from the command line with "mail" ?
>>
>> DS
>>
>> ___
>> Linux-il mailing list
>> Linux-il@cs.huji.ac.il
>> http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
>>
>
> --
>  EE 77 7F 30 4A 64 2E C5  83 5F E7 49 A6 82 29 BA    ~. .~   Tk Open Systems
> =}ooO--U--Ooo{=
>     - y...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
>

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Re: sending mail from the command line

2011-05-10 Thread Jonathan Ben Avraham

Hi Dan,
Indeed it looks as though your mail did in fact go out to gmail. There is 
a chance that gmail silently dropped your mail in its spam filter.


You could use tcpdump (as in wireshark) on outgoing traffic to destination 
port 25 to examine the traffic between your machine and the receiving 
machine. Alternately you could send to another mail server that has less 
opaque filtering.


Regards,

 - yba


On Tue, 10 May 2011, Dan Shimshoni wrote:


Date: Tue, 10 May 2011 15:02:17 +0300
From: Dan Shimshoni 
To: Jonathan Ben Avraham 
Cc: linux-il 
Subject: Re: sending mail from the command line

Thanks!
I use sendmail.
I see this in /var/log/maillog:

localhost sendmail[4900]: p4AEvbvW004900: to=danshi...@gmail.com,
ctladdr=root (0/0), delay=00:00:01, xdelay=00:00:00, mailer=relay,
pri=30225, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent
(p4AEvcRG004901 Message accepted for delivery)

it says stat=Sent, yet I do not get that mail.
I suppose this is some sendmail conf problem.
Did anyone have tips on sendmail configuration? there seems too much
about it on the web for simple configuration (for me it is enough only
to send mail, don't need to receive with sendmail)


On Tue, May 10, 2011 at 2:29 PM, Jonathan Ben Avraham  wrote:

Hi Dan,
Check the configuration of the email server on the machine on which you are
working. It might be not configured or it might be misconfigured. In this
case, it will be happy to accept your email sent using "mail" but wont know
what to do with it and wont even be able to tell you.

Start by looking at /var/log/maillog (for Sendmail installations) or
/var/log/mail.log (commonly used in Postfix installations).
Hag Sameach,

 - yba


On Tue, 10 May 2011, Dan Shimshoni wrote:


Date: Tue, 10 May 2011 14:17:15 +0300
From: Dan Shimshoni 
To: linux-il 
Subject: sending mail from the command line

I am trying this from a Linux machine which is connected to the
internet via PPPoE ( for the test, no firewall):
mail -s "test" danshi...@gmail.com < /dev/null

and also this
mail -s "test" danshi...@gmail.com
enter
add some text
enter
ctrl-d


I don't get any mail in danshi...@gmail.com.

What is wrong here ? what should I do in order to send successfully an
e-mail from the command line with "mail" ?

DS

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=}ooO--U--Ooo{=
    - y...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -





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Re: sending mail from the command line

2011-05-10 Thread guy keren

according to the logs - the mail was not delivered to an external
machine. check your sendmail's mail queue (using 'mailq') to see if the
message is still there.

it could also be that the mail was delivered to some local mailbox,
instead of to google. the fact that it claims that the relay is
'localhost' implies that your sendmail is not configured properly. you
should configure the relay to be the mail server of your ISP.

--guy

On Tue, 2011-05-10 at 15:02 +0300, Dan Shimshoni wrote:
> Thanks!
> I use sendmail.
> I see this in /var/log/maillog:
> 
>  localhost sendmail[4900]: p4AEvbvW004900: to=danshi...@gmail.com,
> ctladdr=root (0/0), delay=00:00:01, xdelay=00:00:00, mailer=relay,
> pri=30225, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent
> (p4AEvcRG004901 Message accepted for delivery)
> 
> it says stat=Sent, yet I do not get that mail.
> I suppose this is some sendmail conf problem.
> Did anyone have tips on sendmail configuration? there seems too much
> about it on the web for simple configuration (for me it is enough only
> to send mail, don't need to receive with sendmail)
> 
> 
> On Tue, May 10, 2011 at 2:29 PM, Jonathan Ben Avraham  wrote:
> > Hi Dan,
> > Check the configuration of the email server on the machine on which you are
> > working. It might be not configured or it might be misconfigured. In this
> > case, it will be happy to accept your email sent using "mail" but wont know
> > what to do with it and wont even be able to tell you.
> >
> > Start by looking at /var/log/maillog (for Sendmail installations) or
> > /var/log/mail.log (commonly used in Postfix installations).
> > Hag Sameach,
> >
> >  - yba
> >
> >
> > On Tue, 10 May 2011, Dan Shimshoni wrote:
> >
> >> Date: Tue, 10 May 2011 14:17:15 +0300
> >> From: Dan Shimshoni 
> >> To: linux-il 
> >> Subject: sending mail from the command line
> >>
> >> I am trying this from a Linux machine which is connected to the
> >> internet via PPPoE ( for the test, no firewall):
> >> mail -s "test" danshi...@gmail.com < /dev/null
> >>
> >> and also this
> >> mail -s "test" danshi...@gmail.com
> >> enter
> >> add some text
> >> enter
> >> ctrl-d
> >>
> >>
> >> I don't get any mail in danshi...@gmail.com.
> >>
> >> What is wrong here ? what should I do in order to send successfully an
> >> e-mail from the command line with "mail" ?
> >>
> >> DS
> >>
> >> ___
> >> Linux-il mailing list
> >> Linux-il@cs.huji.ac.il
> >> http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
> >>
> >
> > --
> >  EE 77 7F 30 4A 64 2E C5  83 5F E7 49 A6 82 29 BA~. .~   Tk Open Systems
> > =}ooO--U--Ooo{=
> > - y...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
> >
> 
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Re: sending mail from the command line

2011-05-10 Thread is123
On Tue, 10 May 2011 17:37:10 +0300
guy keren  wrote:

> 
> according to the logs - the mail was not delivered to an external
> machine. check your sendmail's mail queue (using 'mailq') to see if the
> message is still there.
> 
> it could also be that the mail was delivered to some local mailbox,
> instead of to google. the fact that it claims that the relay is
> 'localhost' implies that your sendmail is not configured properly. you
> should configure the relay to be the mail server of your ISP.

To this advice I would add, most email providers will not accept mail from
dynamic IPs. You probably got blacklisted the moment you tried it unless
you have static IP and reverse DNS.

Otherwise you will have to configure sendmail to use your ISP's mail server
a relayhost as Guy said, and then send mail out from there. If that is all
you want to do then some mini sendmail replacement is going to be much
easier to live with than full-blown sendmail. Look for ssmtp, msmtp, etc.


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Re: Disk I/O as a bottleneck? [OT]

2011-05-10 Thread Oron Peled
On Sunday, 8 בMay 2011 19:42:55 is...@zahav.net.il wrote:
> On Sun, 08 May 2011 19:19:25 +0300
> guy keren  wrote:
> 
> > and how is all this related to solaris Vs. linux? solaris is *nix, at
> > least was the last time i heard ;)
> 
> Yes, you are right, but for some reason Solaris has the reputation for
> handling multicore better than Linux and BSD.

Repeating this claim does not make it true:
  http://www.nas.nasa.gov/Resources/Systems/columbia.html
  - Smallest node have "only" 512 (Itanium) cores
  - Biggest system have 2048 (Itanium) cores
  - These systems are from ~2006 (5 years ago)
  - They are SSI (single system image), not clusters.

If Solaris was so much better in multicore handling, I'll bet you would
be able to point to similar Solaris systems, now can you?

-- 
Oron Peled Voice: +972-4-8228492
o...@actcom.co.il  http://users.actcom.co.il/~oron
"There are two major products that come from Berkeley:
LSD and UNIX. We don't believe this to be a coincidence."
-- Jeremy S. Anderson

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Re: Disk I/O as a bottleneck? [OT]

2011-05-10 Thread is123
On Tue, 10 May 2011 21:57:53 +0300
Oron Peled  wrote:

> On Sunday, 8 בMay 2011 19:42:55 is...@zahav.net.il wrote:
> > On Sun, 08 May 2011 19:19:25 +0300
> > guy keren  wrote:
> > 
> > > and how is all this related to solaris Vs. linux? solaris is *nix, at
> > > least was the last time i heard ;)
> > 
> > Yes, you are right, but for some reason Solaris has the reputation for
> > handling multicore better than Linux and BSD.
> 
> Repeating this claim does not make it true:

Reading what I wrote might help you a little.

I said "Solaris has the *reputation* for handling multicore better."


>   http://www.nas.nasa.gov/Resources/Systems/columbia.html
>   - Smallest node have "only" 512 (Itanium) cores
>   - Biggest system have 2048 (Itanium) cores
>   - These systems are from ~2006 (5 years ago)
>   - They are SSI (single system image), not clusters.
> 
> If Solaris was so much better in multicore handling, I'll bet you would
> be able to point to similar Solaris systems, now can you?

I'm sure I could if I was an Oracle marketing rep, but I really don't care.
I use Linux, Solaris, and 3 different BSD and they all have their good
and bad points. YMMV.

I didn't bother to look at your link but if you don't like what I wrote,
think of the value of comparing whatever OS you are talking about running
on *Itanium* to running it on x86. That's not exactly a sound basis for
comparison :rolleyes:

I was suggesting to the OP it might be good to try a different OS on *his*
hardware if he has a nice box and isn't happy with the performance. I don't
see the crime in that and sorry some of you found it so offensive.

Maybe you  should just buy him an Itanium farm if you feel so strongly
about it ;-)

Have a nice day.


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MS buys Skype - will it support Linux

2011-05-10 Thread Amos Shapira
In case this haven't hit your newspad yet:
http://blogs.skype.com/en/2011/05/microsoft_will_acquire_skype.html

Any ideas on what it implies for none-Windows platform support?

I guess they aren't daft enough to just drop it but would they shuffle their
feet even more when working on none-Windows platforms (as if they aren't far
enough behind already)?

--Amos
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Re: MS buys Skype - will it support Linux

2011-05-10 Thread Steve G.
Unless they radically changed, their main goal is to force people to use
their OS and Office suit, so the support for any other platform would be
weak at best.

What reliable alternative can one use for VOIP and phone in Linux? Including
land line and cellular calls for low cost. I remember Ekiga, but do not
think it ever got too far off the ground, and last time I tried google voice
was not that great under linux either.

Z.

2011/5/10 Amos Shapira 

> In case this haven't hit your newspad yet:
> http://blogs.skype.com/en/2011/05/microsoft_will_acquire_skype.html
>
> Any ideas on what it implies for none-Windows platform support?
>
> I guess they aren't daft enough to just drop it but would they shuffle
> their feet even more when working on none-Windows platforms (as if they
> aren't far enough behind already)?
>
> --Amos
>
>
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