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False SNORT alerts and making sence of the data


Posted by amd599 on March 23, 2005 14:05:47

Is there any indepth guides on how to make sence of all this data? And what is the best way to capture the most attacks (what is the syntax/options I should be using) I'm new to SNORT and I'm using BASE as the front-end. I am having trouble making out what all of the data means. I've had it up and running for 2 days and have recived 668 alerts, obv. not all of these are actually attacks of any sort.

How do I
interpret what is an "actual" threat or what is a false alarm. I've had
it up for 2 days now and it works great, but in those 2 days I have
about 600 alerts. There are also a lot of SNMP Public access UDP alerts,
is that normal? I mean out of 600 alerts about 450 are those SNMP
occurances. Is there any formal documentation on how to interpret this
data so I can show my company that it is doing what it is supposed to?

Posted by novowels on March 26, 2005 12:26:23

get the syngress book "Snort 2.1 Intrusion Detection" or take the SANS class.

http://www.snort.org/external/?url=http://www.amazon.com/exec/obidos/tg/detail/-/1931836043/