Here's some more useful information about frequency:
http://marc.info/?l=ossec-list&m=129736702512080&w=2

On Tue, Feb 22, 2011 at 5:42 PM, jplee3 <[email protected]> wrote:
> Has anybody done much testing with the frequency and timeframe
> parameters in various rulesets?
>
> I'm trying to get it to work with SSH logins and am having issues.
>
> This is in reference to alerts 5712 and 5720 specifically.
>
> The SSH server I'm testing this on is pretty busy - I noticed that the
> rules don't fire very frequently say if I set the frequency to 3 or 4
> and the timeframe to 120. I am definitely failing 3-4 times within the
> 120 seconds but the alerts are not triggering.
>
> I currently have this setup in server-agent mode and previously had it
> working in local mode.
>
> Is there a limitation that the same message must be repeated 3-4 (or
> whatever I set the freq to) times in subsequent order and without
> 'interruption' (i.e. other messages popping up in between) in order to
> trigger? I noticed that if I fired off 4 quick logon failures I was
> able to get 5720 to fire. But I haven't been able to get it to fire
> again thus far. There are a lot of other messages that pop up in
> between. I would assume this shouldn't affect the alert though.
>
> Has anybody else tried/tested this or have it working in similar
> circumstances?
>
>
> TIA

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