How to block IP range

Adam McDougall mcdouga9 at egr.msu.edu
Mon Oct 27 16:53:32 UTC 2014


On 10/27/2014 12:11, Spenst, Aleksej wrote:
> Hi All,
> 
> Is there any syntax to block a certain IP range?
> For example, I need to block only 100 IPs in the range: 10.0.0.1-10.0.0.100
> I can't use the netmask like "block on eth0 from 10.0.0/24" since this will block 256 addresses.
> I don't want also to write all IPs separated by comma like "block on eth0 from {10.0.0.1,10.0.0.2,.....}" since this will generate 100 separate rules (and this is also a very long rule).
> Are there any other ways?
> 
> Thank you!
> Aleksej.
> 
> 
> 

>From the manpage in 10:

Ranges of addresses are specified by using the ‘-’ operator.  For
instance: “10.1.1.10 - 10.1.1.12” means all addresses from
10.1.1.10 to 10.1.1.12, hence addresses 10.1.1.10, 10.1.1.11, and 10.1.1.12.



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