Re: How can I run a Shell Command when Rate Limiting is activated ?

Hi Patrick,

there are multiple methods how you can run external command using Modsecurity:
  -  
https://github.com/SpiderLabs/ModSecurity/wiki/Reference-Manual-%28v2.x%29#inspectFile (read the docs about security  
warning!)
  -  
https://github.com/SpiderLabs/ModSecurity/wiki/Reference-Manual-%28v2.x%29#SecRuleScript


Anyway, i would not allow my web server to run external commands only  
because of alerting. There are other, maybe better and definitely much  
safer ways - for example, replace action 'nolog' with action 'log' in  
your rule with ID 102. Then process web server logs using, for  
example, fail2ban.

azurit




Citát Patrick Rynhart <[email protected]>:

> Hi all,
>
> I’ve got the following snippet from our Apache configuration which  
> successfully provides rate limiting protection against a PHP resource.
> How can I run a shell command when this rule kicks in so that we are  
> alerted that rate limiting protection has been activated (preferably  
> without it being run hundreds of times) ?
>
> Scenario is that I would like to know when this rule kicks in –  
> we’ve got a busy production environment and would refer a script to  
> be run (rather than trying to process the HTTPD logs after the fact).
>
> <LocationMatch "^/course/view.php.*">
>   SecRule REQUEST_HEADERS:X-Forwarded-For "@unconditionalMatch"  
> "phase:2,initcol:ip=%{MATCHED_VAR},pass,nolog,id:100"
>   SecRule IP:ACCESS_COUNT "@gt 1"  
> "phase:2,pause:300,deny,status:429,setenv:RATELIMITED,skip:1,nolog,id:102"
>   SecAction "phase:2,setvar:ip.access_count=+1,pass,nolog,id:103"
>   SecAction  
> "phase:5,ctl:auditEngine=On,deprecatevar:ip.access_count=1/1,pass,nolog,id:104"
>   Header always set Retry-After "10" env=RATELIMITED
> </LocationMatch>
> ErrorDocument 429 "Rate Limited"
>
> With Thanks,
>
> Patrick Rynhart





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