Re: How can write rule with a range IP?

[CunningPike <cunningpike () gmail com>]

And, generally speaking, the use of variables is preferable to 
hard-coding IP addresses into rules, e.g.:

var $SOME_NET [10.0.0.1,10.0.0.5,10.0.1.0/24]

alert $SOME_NET any -> any any ........

CP

Joel Esler wrote:
> Either seperate the multiple IP's that are in "[ ]" brackets with 
> commas, or if all your IP's are consecutive, you may use CIDR notation.
>
> J
>
> On Jan 27, 2008, at 3:15 AM, bahamin takhtaei wrote:
>
> > Hi,
> > Please tell me How can write a rule in snort with a range IP, e.g.
> > alert  icmp   [10.0.0.21 : 151.43.23.76 , 12.5.6.7] any -> any 
> > (sid:2000000;)
> >
> > I checked this rule and found that snort only checks the first 
> > boundary of  range (10.0.0.21) in  packets!
> >
> > Thanks
> >
> >
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