mystery alerts

["Tony Reusser" <treusser () filertel com>]

A question from a snort n00b:

 

I see lots of alerts in my BASE console that I cannot find a corresponding
rule for.  Some of these alerts are numerous and obvious false positives.
But I can't find any reference to the alert message in any rule file or
gen-msg.map or sid-msg.map files in order to create a suppress rule or
event_filter rule for the gen_id and sig_id numbers.  I'm perplexed.  Alert
examples are below:

 

imap: Unknown IMAP4 command 

imap: Unknown IMAP4 response

http_inspect: MESSAGE WITH INVALID CONTENT-LENGTH OR CHUNK SIZE

 

I realize these are preprocessor rules, but shouldn't I still see a
reference in 'preprocessor.rules' ?

 

Any help or advice would be appreciated.

 

Tony

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