Re: [Exim] Hi.. Can someone send me a link to a good explana…

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Autor: Philip Hazel
Fecha:  
A: Derrick MacPherson
Cc: exim-users
Asunto: Re: [Exim] Hi.. Can someone send me a link to a good explanation of mask length?
On Tue, 13 Mar 2001, Derrick MacPherson wrote:

> i.e. - 10.10.10.0/12 = what range does the 12 represent?


The 12 most significant bits, i.e. the mask is 255.250.0.0 in your
example (or FFF00000 in hex). So 10.10.10.0/12 would match 10.0.0.0 to
10.15.255.255. (And is confusing, because the simplest way to write it
is 10.0.0.0/12.)

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.