Autor: Adam D. Barratt Data: Para: exim-users Assunto: Re: [Exim] question about ACL
Sean Witham wrote, Friday, December 12, 2003 12:40 PM
> Adam D. Barratt wrote:
>
> > Matthias Lewandowski wrote, Friday, December 12, 2003 10:32 AM
> > [...]
> >
> >>/24 is marking the number of adresses matching.
> >>It's the same as the netmask 255.255.255.0 (class-c)
> >
> >
> > Well, aside from the fact that only a limited subset of /24s are Class Cs... > > (given that there are 256 /24s and only 32 Class Cs). :-) > err, no, there potentially 2^21 class C addresses, i.e. 192.0.0.0 -
> 223.255.255.255.
<pedant>223.255.255.0</pedant> (the network, not the hosts)
I knew what I meant. ;-p
Either way, there isn't a one-to-one correspondence between /24s and Class
Cs, which was the point I was trying to make (given that, for instance,
10.10.10.0/24 /isn't/ a Class C).