Snort mailing list archives
Using pulled pork to change rule state from alert to drop for a policy type
From: Tony Robinson <deusexmachina667 () gmail com>
Date: Sun, 24 Mar 2013 13:41:01 -0400
Hello Folks, I'm doing some experimentation with snort. I'm trying to document effective ways to transition a passive snort installation into an inline mode installation. Near as far as I can tell, there are a few key things you need to do with a modern snort installation to transition it to inline mode: 1. Configure DAQ for inline mode operation (e.g. afpacket and the interfaces you want to bridge 2. Ensure the interfaces are configured to be up at boot and ready to forward traffic. 3.Test to ensure the interfaces are forwarding traffic as expected. 4. Modify your snort command line to add the -Q option, and your snort.conf with config policy_mode:inline 5. Modify your snort rules to drop traffic in inline mode. My question revolves around 5. I'm well aware that pulled pork, via dropsid.conf, can be used to change alert rules to drop rules. I'm worried about haphazardly changing all the rules in my snort.rules file to DROP ALL THE THINGS. What I would like to do: If I see a rule with policy metadata that recommends the rule be set to drop, I want to change that rule from alert to drop. Let's pick on sid 1:10011 -- SERVER-MAIL Novell NetMail APPEND command buffer overflow attempt, just to illustrate what I'm trying to do. It has the line "metadata:policy security-ips drop" indicating that: "If the user is using a security over connectivity ruleset, this would make a good drop rule in that rule policy configuration." If I am using a given rule policy configuration in pulled pork (balanced, connectivity or security), and I see a rule with metadata that indicates a given rule would make a good drop rule for that policy ruleset (metadata: policy balanced-ips || policy connectivity-ips || policy security-ips) , I want to use pulledpork to change it to a drop rule. Is there an effective way to do this? If there is not, I think this would make for an awesome feature request in PP. -- when does reality end? when does fantasy begin?
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Current thread:
- Using pulled pork to change rule state from alert to drop for a policy type Tony Robinson (Mar 24)
- Re: Using pulled pork to change rule state from alert to drop for a policy type Joel Esler (Mar 24)
- Re: Using pulled pork to change rule state from alert to drop for a policy type Yossi Nachum (Mar 25)
- Re: Using pulled pork to change rule state from alert to drop for a policy type waldo kitty (Mar 25)
- Re: Using pulled pork to change rule state from alert to drop for a policy type Tony Robinson (Mar 27)