Login attacks

[Kostas Sfakiotakis]

Greetings,

Jeff Kinz wrote:
> On Tue, Dec 07, 2004 at 08:47:02PM -0600, Mike Klinke wrote:
> 
>>On Tuesday 07 December 2004 20:04, Rick Stevens wrote:
>>
>>>Whoa, buddy.  The entire 64.0.0.0/8 is NOT a spam source.  We
>>>have a /19 in that space and we're not spammers.
>>
>> 
>>Rick, note he said /24 (256 nodes) not /8 (16+ million nodes)
> 
> 
> Ah snarf. and I did the same thing. 

Even , if it is the 256 nodes and not the 16+ million i think there is
a question that needs an answer .  How far can someone go , without
actually blocking normal traffic ?
All  i mean is that if someone just start's blocking  entire ranges , then
he might very well end up unable to surf half the Internet or even more .
Is there a way to block for example the range from
64.0.0.1 to 64.0.0.25 leaving the other IP's free ?



Kind Regards,
   Kostas