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Full Discussion: TCP stream rebuild
Special Forums IP Networking TCP stream rebuild Post 19531 by Perderabo on Friday 12th of April 2002 08:02:30 AM
Old 04-12-2002
I have never used snort, but according to the Snort FAQ:
Quote:
Stream4 is an entirely new preprocessor that preforms two functions:

1) Stateful inspection of TCP sessions
2) TCP stream reassembly
Click on that FAQ link for more info about stream4.
 

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PRADS2SNORT(1)							    networking							    PRADS2SNORT(1)

NAME
prads2snort - Snort autotuning of Frag3 and Stream5 SYNOPSIS
prads2snort -i /var/log/prads-asset.log -o /etc/snort/host_attributes.xml -d linux -v DESCRIPTION
PRADS is a Passive Real-time Asset Detection System. It passively listen to network traffic and gathers information on hosts and services it sees on the network. This information can be used to map your network, letting you know what services and hosts are alive/used, or can be used together with your favorite IDS/IPS setup for "event to host/service" correlation. Gathering info about your hosts in real-time, will also let you detect assets that are just connected to the network for a short period of time, where a active network scan (nmap etc.) would take long time, and not common to run continually, hence missing the asset. The initial goal of implementing PRADS, was to make the host_attribute_table.xml for Snort (automatically). PRADS2SNORT is the tool that does this! OPTIONS
-i,--infile <file> file to feed prads2snort.pl -o,--outfile <file> file to write host_attribute data to (host_attribute.xml) -d,--default <os> set Default OS if unknown (linux,bsd,macos,windows) -v, --verbose prints out OS, frag, stream and confidence of asset -h, --help this help message --version show prads2snort.pl version PROBLEMS
1. Better mapping of less used apps to their correct snort attributes or drop them. SEE ALSO
o PRADS <http://prads.projects.linpro.no/> o p0f <http://lcamtuf.coredump.cx/p0f.shtml> o PADS <http://passive.sourceforge.net/> o Snort <http://snort.org> o Sguil <http://sguil.net> o Hogger <http://code.google.com/p/hogger/> BUGS
Report bugs here: o http://github.com/gamelinux/prads/issues For general questions: o http://projects.linpro.no/mailman/listinfo/prads-devel o http://projects.linpro.no/mailman/listinfo/prads-users AUTHOR
edwardfjellskaal@gmail.com COPYRIGHT
GPL 0.2 2010-06-21 PRADS2SNORT(1)
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