[RE] CIDR Explanation

[Lonely Wolf <thelonelywolf () gmail com>]

> but I don't want to use it right now due
> to my lack of knowledge which can cause security issues

Hi,
CIDR is not so strange and difficult, have a look to these link and
i'm sure u'll setting up your snort box without problem.

http://compnetworking.about.com/library/weekly/aa021003a.htm
"
What is CIDR?

CIDR stands for Classless Inter-Domain Routing. CIDR was developed in
the 1990s as a standard scheme for routing IP addresses...CIDR allows
a more flexible way to associate groups of IP addresses without
relying on the original class system....

CIDR Notation

CIDR specifies an IP address range by the combination of an IP address
and its associated network mask. CIDR notation uses the following
format -
xxx.xxx.xxx.xxx/n 
where n is the number of (leftmost) '1' bits in the mask. For example, 
192.168.12.0/23 
applies the network mask 255.255.254.0 to the 192.168 network,
starting at 192.168.12.0. This notation represents the address range
192.168.12.0 - 192.168.13.255. Compared to traditional class-based
networking, 192.168.12.0/23 represents an aggregation of the two Class
C networks 192.168.12.0 and 192.168.13.0 each using the default
network mask 255.255.255.0. ...."


http://www.faqs.org/rfcs/rfc1519.html
http://www.faqs.org/rfcs/rfc1817.html


http://public.pacbell.net/dedicated/cidr.html
"What Is CIDR?
CIDR is a new addressing scheme for the Internet which allows for more
efficient allocation of IP addresses than the old Class A, B, and C
address scheme...."

http://www.freesoft.org/CIE/Course/Subnet/
http://www.ralphb.net/IPSubnet/cidr.html


i hope this could help you

Greetings From Italy

.::.Lonely Wolf.::.

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