Signature Lookup Confusion

[Josh Bitto <jbitto () onlineschool ca>]

I'm having a bit of a problem fully grasping how to search up rules that have been fired.....

2013-05-07T10:14:05-07:00 firewall snort[62223]: [120:8:1] (http_inspect) INVALID CONTENT-LENGTH OR CHUNK SIZE 
[Classification: Unknown Traffic] [Priority: 3] {TCP} 209.97.200.53:32459 -> 216.178.47.38:80


Ok so what I understand from the log is that rule 120 fired. Either I need some caffeine or it's a horrible Tuesday for 
me to comprehend this, but I'm just not getting it. The instructions on how to search for the group id and the sid for 
some reason are not sticking. Can someone dumb this down for me....I'm gonna run out and get a pop and hopefully come 
back to someone who has awesomely helped me out.


Basically I want to be able to search for explanations on whatever event happens so I can determine if I need to take 
action or not.



Josh

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