[Snort-users] Switching snort from IDS to IPS mode

James Lay jlay at slave-tothe-box.net
Sat Feb 3 16:11:16 EST 2018

Check here under Deployment Guides: 


In a nutshell you send all your traffic to snort, and then snort decides
what to do with it..usually using NFQUEUE or a box with three interfaces
with a pair of interfaces being your traffic in/out and the third for
management.  Snort will create it's own bridge in the latter case so no
need for bridge utils. 


On 2018-02-03 06:47, Jim Campbell wrote:

> I run the following snippet from a shell script to change the rules from alert to block. I am running snort inline (IPS) under Ubuntu 17.04. 
> echo "Change 'alert' to 'block' for snort.rules ========================"
> sudo awk '{sub("alert","block",$0); print;}' /etc/snort/rules/snort.rules > /etc/snort/rules/snortd.rules 
> On 2/3/2018 6:42 AM, bobby via Snort-users wrote: 
>> I am running Snort inline.  I am running Linux. What would be the easiest way to replace all rules with drop from alert?  Would I have to run a script to modify each rule, or is there an easier way?
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