Snort mailing list archives
Completely unscientific snort db performance test
From: Derek Glidden <dglidden () illusionary com>
Date: 18 Feb 2003 16:07:06 -0500
With all the recent discussion about "appropriate" databases to use with snort, here are some very unscientific results I've come to with some of the work I've been doing at work: http://www.illusionary.com/snort_db.html -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #!/usr/bin/perl -w $_='while(read+STDIN,$_,2048){$a=29;$b=73;$c=142;$t=255;@t=map {$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110; $t^=(72,@z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0,@z) [$_%8]}(16..271);if((@a=unx"C*",$_)[20]&48){$h=5;$_=unxb24,join "",@b=map{xB8,unxb8,chr($_^$a[--$h+84])}@ARGV;s/...$/1$&/;$d= unxV,xb25,$_;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=$t&($d
12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*
8^$q<<6))<<9,$_=$t[$_]^(($h>>=8)+=$f+(~$g&$t))for@a[128..$#a]}
print+x"C*",@a}';s/x/pack+/g;eval
usage: qrpff 153 2 8 105 225 < /mnt/dvd/VOB_FILENAME \
| extract_mpeg2 | mpeg2dec -
http://www.cs.cmu.edu/~dst/DeCSS/Gallery/
http://www.eff.org/ http://www.anti-dmca.org/
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Current thread:
- Completely unscientific snort db performance test Derek Glidden (Feb 18)
- Re: Completely unscientific snort db performance test Dirk Geschke (Feb 19)
