Re: BSD display

2004-09-09 Thread Nico Meijer
Hi Steve,
Nothing can stop a hacker who really wants your box, but most of the
annoyances are script kiddies. Script kiddies when things get tough
tend to move on to another system.  So whatever I can to not help
script kiddies is to my advantage.  
This might be true, yes. They might not care and try every trick in 
their toolkit.

One of my 'problems' with this approach lies with the move on to 
another system. So now they're hitting on *my* systems... ;-)

Someone, somewhere has to deal with these creatures and get them 
caught/slapped in the face/buttkicked. I report whenever I can, which is 
all I can do, I guess.

Plus (back to the original topic), if we both upgrade regularly, whose 
box is more secure? Yours or mine? :-)

Bye... Nico
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Re: BSD display

2004-09-09 Thread Geert Hendrickx
On Wed, Sep 08, 2004 at 05:00:48PM +0200, Ruben de Groot wrote:
 On Wed, Sep 08, 2004 at 06:33:03AM -0700, steveb99 typed:
  Thank you that was my motivation is security.  Same as you don't
  display the last name that logged on, it gives a hacker half the info
  they need to crack an account.  Displaying the OS helps a hacker know
  which  approach cracking into a box.
 
 Edit /etc/ssh/sshd_config and change the line:
 
 #VersionAddendum FreeBSD-20030924
 
 to something like:
 
 VersionAddendum GO-AWAY!
 
 than restart sshd.
 
 cheers,
 Ruben

Yes, this seems to work.  Notice that this won't help OpenBSD people, as
they are the only ones who do not have the p (for portable) in their
OpenSSH version number.  You'd still know they are running OpenBSD. :-)  

GH
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Re: BSD display

2004-09-08 Thread Subhro
Harald,

Well I don't want to get into any courtsy controversies or licensing
gimmicks. But what the steve said has a good point. Lets think it that
way that just a casual onlooker cant make out what OS and version is
running on the box. It makes the life of a cracker just a little more
difficult. However more promising guyz and galz can find it out
anyway.

Regards
S.


On Wed, 8 Sep 2004 05:52:30 +0200, Harald Schmalzbauer
[EMAIL PROTECTED] wrote:
 Am Mittwoch, 8. September 2004 05:41 schrieb steveb99:
 
  I don't like the OS name and version displayed with logging to ssh or
 
 Best would be to use anythig else which you like.
 And after that you could read your offending mail again and sitting ashamed in
 the corner for a loong loong time
 
  other areas. Where to I eliminate or change the text of the message
  being displayed?
 
 Nowhere! That's one of the things you have to keep if you're using
 BSD-Licensed code :)
 
 Alternatively you're welcome to contribute youre code!
 
 -Harry
 
 
 
 
  Steve Barnette
 
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-- 
Subhro Sankha Kar
School of Information Technology
Block AQ-13/1 Sector V
ZIP 700091
India
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RE: BSD display

2004-09-08 Thread steveb99
Thank you that was my motivation is security.  Same as you don't
display the last name that logged on, it gives a hacker half the info
they need to crack an account.  Displaying the OS helps a hacker know
which  approach cracking into a box.

Thanks,
Steve Barnette 

 -Original Message-
 From: [EMAIL PROTECTED] 
 [mailto:[EMAIL PROTECTED] On Behalf Of Subhro
 Sent: Wednesday, September 08, 2004 2:58 AM
 To: Harald Schmalzbauer
 Cc: [EMAIL PROTECTED]
 Subject: Re: BSD display
 
 Harald,
 
 Well I don't want to get into any courtsy controversies or 
 licensing gimmicks. But what the steve said has a good point. 
 Lets think it that way that just a casual onlooker cant make 
 out what OS and version is running on the box. It makes the 
 life of a cracker just a little more difficult. However more 
 promising guyz and galz can find it out anyway.
 
 Regards
 S.
 
 
 On Wed, 8 Sep 2004 05:52:30 +0200, Harald Schmalzbauer 
 [EMAIL PROTECTED] wrote:
  Am Mittwoch, 8. September 2004 05:41 schrieb steveb99:
  
   I don't like the OS name and version displayed with 
 logging to ssh 
   or
  
  Best would be to use anythig else which you like.
  And after that you could read your offending mail again and
sitting 
  ashamed in the corner for a loong loong time
  
   other areas. Where to I eliminate or change the text of 
 the message 
   being displayed?
  
  Nowhere! That's one of the things you have to keep if you're using

  BSD-Licensed code :)
  
  Alternatively you're welcome to contribute youre code!
  
  -Harry
  
  
  
  
   Steve Barnette
  
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 --
 Subhro Sankha Kar
 School of Information Technology
 Block AQ-13/1 Sector V
 ZIP 700091
 India
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Re: BSD display

2004-09-08 Thread Ruben de Groot
On Wed, Sep 08, 2004 at 06:33:03AM -0700, steveb99 typed:
 Thank you that was my motivation is security.  Same as you don't
 display the last name that logged on, it gives a hacker half the info
 they need to crack an account.  Displaying the OS helps a hacker know
 which  approach cracking into a box.

Edit /etc/ssh/sshd_config and change the line:

#VersionAddendum FreeBSD-20030924

to something like:

VersionAddendum GO-AWAY!

than restart sshd.

cheers,
Ruben

 Thanks,
 Steve Barnette 
 
  -Original Message-
  From: [EMAIL PROTECTED] 
  [mailto:[EMAIL PROTECTED] On Behalf Of Subhro
  Sent: Wednesday, September 08, 2004 2:58 AM
  To: Harald Schmalzbauer
  Cc: [EMAIL PROTECTED]
  Subject: Re: BSD display
  
  Harald,
  
  Well I don't want to get into any courtsy controversies or 
  licensing gimmicks. But what the steve said has a good point. 
  Lets think it that way that just a casual onlooker cant make 
  out what OS and version is running on the box. It makes the 
  life of a cracker just a little more difficult. However more 
  promising guyz and galz can find it out anyway.
  
  Regards
  S.
  
  
  On Wed, 8 Sep 2004 05:52:30 +0200, Harald Schmalzbauer 
  [EMAIL PROTECTED] wrote:
   Am Mittwoch, 8. September 2004 05:41 schrieb steveb99:
   
I don't like the OS name and version displayed with 
  logging to ssh 
or
   
   Best would be to use anythig else which you like.
   And after that you could read your offending mail again and
 sitting 
   ashamed in the corner for a loong loong time
   
other areas. Where to I eliminate or change the text of 
  the message 
being displayed?
   
   Nowhere! That's one of the things you have to keep if you're using
 
   BSD-Licensed code :)
   
   Alternatively you're welcome to contribute youre code!
   
   -Harry
   
   
   
   
Steve Barnette
   
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  --
  Subhro Sankha Kar
  School of Information Technology
  Block AQ-13/1 Sector V
  ZIP 700091
  India
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Re: BSD display

2004-09-08 Thread Nico Meijer
Hi Steve,
 Displaying the OS helps a hacker know
which  approach cracking into a box.
This may be true. OTOH, not displaying the version of [insert software 
package of the day here] may invite a 'hacker' to pull a full-scale 
all-out number on you, trying every possible exploit he can get his 
hands on. Or simply DDoS you out of this universe. Or launch whatever 
OS-agnostic attack can be performed.

I'm sure there have been long discussions over this 'security by 
obscurity' thing *somewhere*... ;-)

Buhbye... Nico
P.S. I guess nothing beats common sense coupled with regular upgrading.
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RE: BSD display

2004-09-08 Thread steveb99
 

 -Original Message-
 From: [EMAIL PROTECTED] 
 [mailto:[EMAIL PROTECTED] On Behalf Of Nico
Meijer
 Sent: Wednesday, September 08, 2004 8:59 AM
 To: [EMAIL PROTECTED]
 Subject: Re: BSD display
 
 Hi Steve,
 
   Displaying the OS helps a hacker know which  approach 
 cracking into a 
  box.
 
 This may be true. OTOH, not displaying the version of [insert 
 software package of the day here] may invite a 'hacker' to 
 pull a full-scale all-out number on you, trying every 
 possible exploit he can get his hands on. Or simply DDoS you 
 out of this universe. Or launch whatever OS-agnostic attack 
 can be performed.
 
 I'm sure there have been long discussions over this 'security 
 by obscurity' thing *somewhere*... ;-)
 
Nothing can stop a hacker who really wants your box, but most of the
annoyances are script kiddies. Script kiddies when things get tough
tend to move on to another system.  So whatever I can to not help
script kiddies is to my advantage.  

Steve B.

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Re: BSD display

2004-09-07 Thread Harald Schmalzbauer
Am Mittwoch, 8. September 2004 05:41 schrieb steveb99:

 I don't like the OS name and version displayed with logging to ssh or

Best would be to use anythig else which you like.
And after that you could read your offending mail again and sitting ashamed in 
the corner for a loong loong time

 other areas. Where to I eliminate or change the text of the message
 being displayed?

Nowhere! That's one of the things you have to keep if you're using 
BSD-Licensed code :)

Alternatively you're welcome to contribute youre code!

-Harry


 Steve Barnette

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