Awesome, I'll give that a shot. Thanks. 

On Thursday, February 25, 2016 at 1:57:06 PM UTC-5, dan (ddpbsd) wrote:
>
> On Thu, Feb 25, 2016 at 1:50 PM, thak <tha.k...@gmail.com <javascript:>> 
> wrote: 
> > I've seen similar topics, so apologies if this has been answered several 
> > times but I want to make sure I get guidance for the most recent 
> version! 
> > 
> > Loving OSSEC so far having set it up in our environment a few days ago. 
> > However, rule 1002 is particularly chatty given our Apache error logs. 
> > Basically, our application's identity API has a ping function that runs 
> > every 5 seconds to check for an authenticated session. It will do this 
> even 
> > once the user's session has timed out, so long as that browser or tab is 
> > open. We have a lot of customers who time out but don't close the tab 
> > (understandably). So when the ping.json function runs, it generates a 
> few 
> > log entries with the term "error", specifically 
> > https://app-identity.thak.com/idm/error/... 
> > 
> > In our application this is obviously expected, and we can purge 
> error_log 
> > when it gets too big filling with this stuff, but OSSEC is piling up 
> alerts 
> > multiple times per minute, and from our security perspective it's really 
> > just noise. 
> > 
> > Can I set up a local rule to 
> > <match>https://app-identity.thak.com/idm/error/</match> without an 
> email 
> > alert that will trump the default "Unknown problem somewhere in the 
> system" 
> > alert for logs containing "error" terminology? I'm really new to writing 
> > custom rules but it seems like that wouldn't be too difficult, and 
> throwing 
> > that local rules file on our proxies would solve this problem. 
> > 
>
> Depending on the actual log, that should work. Add an 
> "<if_sid>1002</if_sid>" to your custom rule to make sure it over rides 
> the 1002 alerts. 
> So something like this: 
> <rule id="9999999" level="0"> 
>   <if_sid>1002</if_sid> 
>   <match>https://app-identity.thak.com/idm/error/</match> 
>   <description>Ignore blah blah</description> 
> </rule> 
>
> Put that in place and use ossec-logtest to make sure it works. 
>
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