In message <[EMAIL PROTECTED]>,
Fabiano writes:
> What is the best SEC rule to make something like this:
>
> IF ((event1) AND (event2)) OR (event3) email "Attack_X" ??
Umm, well you haven't specified the time dependence between event1 and
event2. So:
type=single
ptype=regexp
pattern=event3
action= shellcmd email --subject "attack X"
and then if event1 must occur before event2 and you will wait forever
for event 2 to occur:
type=pairwithwindow
pattern=event1
pattern2=event2
action=none
action2= shellcmd email --subject "attack X"
window=0
if event1 and event2 can occur in either order but must occur within 1
minute of each other you can use two of the pairwithwindow statements
above with window=60 or a coincidence checking rulegroup like:
type=single
ptype=regexp
pattern=TEST_COINCIDENCE_OF_EVENT1_EVENT2
context = c_event1 && c_event2
action= shellcmd email --subject "attack X"
type=single
ptype=regexp
pattern=event1
action= create c_event1 60;event TEST_COINCIDENCE_OF_EVENT1_EVENT2
type=single
ptype=regexp
pattern=event2
action= create c_event2 60;event TEST_COINCIDENCE_OF_EVENT1_EVENT2
--
-- rouilj
John Rouillard
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