NetCIDR 0.1 Released

networking :: python :: programming

As part of the on-going work with
CoyoteMonitoring,
NetCIDR
was written to allow for a clean and logical approach when analyzing
NetFlow
captures. Primarily, it's use is for determining whether a given IP
address is in a given netblock or a collection of netblocks. Here are
some quick example usages from the wiki and doctests:

     >>> CIDR('10.4.1.2')
     10.4.1.2
     >>> CIDR('10.4.1.x')
     10.4.1.0/24
     >>> CIDR('10.*.*.*')
     10.0.0.0/8
     >>> CIDR('172.16.4.28/27')
     172.16.4.28/27
     >>> CIDR('172.16.4.28/27').getHostCount()
     32

Here's how you create a collection of networks:

     >>> net_cidr = CIDR('192.168.4.0/24')
     >>> corp_cidr = CIDR('10.5.0.0/16')
     >>> vpn_cidr = CIDR('172.16.9.5/27')
     >>> mynets = Networks([net_cidr, corp_cidr])
     >>> mynets.append(vpn_cidr)

And now, you can check for the presence of hosts in various networks
and/or collections of networks:

     >>> home_router = CIDR('192.168.4.1')
     >>> laptop1 = CIDR('192.168.4.100')
     >>> webserver = CIDR('10.5.10.10')
     >>> laptop2 = CIDR('172.16.9.17')
     >>> laptop3 = CIDR('172.16.5.17')
     >>> google = CIDR('64.233.187.99')
     >>> home_router in mynets
     True
     >>> laptop1 in mynets
     True
     >>> webserver in mynets
     True
     >>> laptop2 in mynets
     True
     >>> laptop3 in mynets
     False
     >>> google in mynets
     False