On 2003/03/11 02:12:12PM -0600, Tue, Bill wrote: > Hello Debian, > > I want to block all ip's ending in 224 to 255 but not 220 and others > searching the net I found I need to add "/27" to end of the ip. > I understand /8 /16 /24 /32 somewhat but... > > My question: what makes /27 significant > X.Y.Z.224 - X.Y.Z.255 > deny from 63.148.99.224/27 > apt-get install gipsc gipsc will do all the math for you /27 is cidr notation for a 255.255.255.224 netmask, meaning 63.148.99.224-255
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