can't you just do
> -----Original Message-----
> From: firstname.lastname@example.org
> [mailto:email@example.com]On Behalf Of Matt
> Sent: 29 March 2006 5:41pm
> To: firstname.lastname@example.org
> Subject: Re: hosts.deny
> On Wed, 2006-03-29 at 09:05 -0600, Jack Hale wrote:
> > I am trying to block a whole subnet. (example
> > 100.100.100.0-100.100.100.255).
> > in my /etc/hosts.deny file I have placed this as
> > 100.100.100.0/100.100.100.255.
> > Is this the correct way to do this? I am using Shorewall for the
> > firewall. I am new to this. Sorry for the stupidity.
> > Jack
> hosts (allow|deny) are more of a layer7 packet filter. that
> is, it is at
> the application level.
> firewalls filter at layers 2 and 3 of the OSI model.
> both methods work for restricting access to stuff, but they are
> different, and that is important to understand.
> -matt zagrabelny
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