Autorun is VERY bad

2011-02-07 Thread kellyremo
How to disable autorun? Are there any hidden autorun features on a standard 
Debian install??

http://securitytube.net/USB-Autorun-attacks-against-Linux-at-Shmoocon-2011-video.aspx



https is faster on amd64?

2011-02-06 Thread kellyremo

http://devcentral.f5.com/weblogs/macvittie/archive/2011/01/31/dispelling-the-new-ssl-myth.aspx

according to the SSL Performance table it says that the transactions per 
second is 2-3 times better using 64bit kernels opposite to 32bit kernels?

is this true, or i am just misunderstanding something

Thank you!



OpenSSH could be faster...then why don't they path it??

2011-02-06 Thread kellyremo

https://www.psc.edu/networking/projects/hpn-ssh/hpn-v-ssh-tput.jpg
 
 SCP and the underlying SSH2 protocol implementation in OpenSSH is network 
performance limited by statically defined internal flow control buffers. These 
buffers often end up acting as a bottleneck for network throughput of SCP, 
especially on long and high bandwith network links. Modifying the ssh code to 
allow the buffers to be defined at run time eliminates this bottleneck. We have 
created a patch that will remove the bottlenecks in OpenSSH and is fully 
interoperable with other servers and clients. In addition HPN clients will be 
able to download faster from non HPN servers, and HPN servers will be able to 
receive uploads faster from non HPN clients. However, the host receiving the 
data must have a properly tuned TCP/IP stack.
 
 My question is: So Why Does the original OpenSSH has limited statically 
defined internal flow control buffers?? It could be way faster, even 10x!!
 
 With the HPN-SCP path it could be the descendant of FTP! Why aren't there any 
OpenSCP packages? ('normal SCP+HPN-SCP path+no local user needed for 
SCP'ing+chroot by default')
 
 Any opinions?
 
 Thank you!




Re: if the file changes send email about diff

2011-02-06 Thread kellyremo
The file only contains plain MAC addresses, separated with a new line:

Like:
FF:FF:FF:FF:FF:F1
FF:FF:FF:FF:FF:F2

Or:
FF:FF:FF:FF:FF:F2

 On Sun, 06 Feb 2011 06:40:32 -0800 frank thyes lt;fr...@anotheria.netgt; 
wrote  

On Sun, 2011-02-06 at 05:33 -0800, kellyremo wrote: 
 
gt; /dev/shm/dhcpacks-in-last-2min.txt 
 
Could you pastebin this file too? 
 
Frank 
 
 
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How to set GNOME-panel to several columns if needed?

2011-02-03 Thread kellyremo


http://i.imgur.com/rUKeu.png
 
 how could i configure the GNOME-panel to have several columns [if there are 
many applications]?
 
 ~~like this: 
 http://i.imgur.com/ElgAA.jpg
 
 Thank you!




internet connection tester script

2011-01-28 Thread kellyremo

http://pastebin.com/raw.php?i=rykHdvBh

bix.hu and www.yahoo.com are pingable test sites.
127.0.0.1 could not be pinged [firewall drops all icmp]

i have a oneliner that echoes if theres internet connection or no.
$ ping -W 1 -c 2 bix.hu gt;amp; /dev/null amp;amp; ping -W 1 -c 2 
www.yahoo.com gt;amp; /dev/null amp;amp; echo internet connection ok || 
echo no internet connection
internet connection ok
$ ping -W 1 -c 2 127.0.0.1 gt;amp; /dev/null amp;amp; ping -W 1 -c 2 
www.yahoo.com gt;amp; /dev/null amp;amp; echo internet connection ok || 
echo no internet connection
no internet connection
$ ping -W 1 -c 2 127.0.0.1 gt;amp; /dev/null amp;amp; ping -W 1 -c 2 
127.0.0.1 gt;amp; /dev/null amp;amp; echo internet connection ok || echo 
no internet connection
no internet connection
$ ping -W 1 -c 2 bix.hu gt;amp; /dev/null amp;amp; ping -W 1 -c 2 127.0.0.1 
gt;amp; /dev/null amp;amp; echo internet connection ok || echo no 
internet connection
no internet connection
$ ping -W 1 -c 2 bix.hu gt;amp; /dev/null amp;amp; ping -W 1 -c 2 
www.yahoo.com gt;amp; /dev/null amp;amp; echo internet connection ok || 
echo no internet connection
internet connection ok
$

Ok!

But: if i want the oneliner to only go along when theres internet connection:
$ while $TORF; do ping -W 1 -c 1 bix.hu gt;amp; /dev/null amp;amp; ping -W 
1 -c 1 www.yahoo.com gt;amp; /dev/null amp;amp; TORF=false || TORF=true; 
done
$ while $TORF; do ping -W 1 -c 1 127.0.0.1 gt;amp; /dev/null amp;amp; ping 
-W 1 -c 1 www.yahoo.com gt;amp; /dev/null amp;amp; TORF=false || TORF=true; 
done
$ while $TORF; do ping -W 1 -c 1 127.0.0.1 gt;amp; /dev/null amp;amp; ping 
-W 1 -c 1 127.0.0.1 gt;amp; /dev/null amp;amp; TORF=false || TORF=true; done
$ while $TORF; do ping -W 1 -c 1 bix.hu gt;amp; /dev/null amp;amp; ping -W 
1 -c 1 127.0.0.1 gt;amp; /dev/null amp;amp; TORF=false || TORF=true; done
$ while $TORF; do ping -W 1 -c 1 bix.hu gt;amp; /dev/null amp;amp; ping -W 
1 -c 1 www.yahoo.com gt;amp; /dev/null amp;amp; TORF=false || TORF=true; 
done
$ 

It just doesn't work. 

Goal: if theres no internet connection, then the oneliner must loop until there 
is internet connection. if theres internet connection the oneliner ends.

what am i missing?



putting /tmp to memory help

2011-01-23 Thread kellyremo
to memory means: mounting a ~2 GByte filesystem [ tmpfs?, or ramfs? ], and 
put the /tmp on it. [ e.g.: 4 GByte ram in the pc ]. what to write in the 
/etc/fstab?

I would like to collect the [ answers too:P ]:

Advantages:
- Memory is way faster then HDD/SSD, so it could speed things up
- SSD amortization is less

Disadvantages: 
- Security? [ how to set this up to be secure? any clear howtos/links regarding 
it? :O ]

Really thank you for any good help...



NOD32 on Linux

2011-01-23 Thread kellyremo
Anyone using it?

http://beta.eset.com/linux

What are the experiences? Does it slows down the pc? Do we need it?