Cidr

CIDR Calculator was designed out of a desire to streamline CIDR calculations by creating a simple, easy to use tool for performing CIDR network block math and network masks with complete confidence.?? A cornerstone of worldwide IPv4 network com Platforms: Mac

grepcidr can filter IP addresses matching IPv4 CIDR/network specification. grepcidr can be used to filter a list of IP addresses against one or more Classless Inter-Domain Routing (CIDR) specifications, or arbitrary networks specified by an address range. As with grep, there are options to... Platforms: *nix

aggregate is a tool for aggregating CIDR networks. Input is read from stdin and output is written to stdout. It undestands IPv4 networks represented as network/prefix, network/netmask and start_address - end_addres. It is able to read input in any one of these formats and output in the same or a... Platforms: *nix

Free Subnet Calculator from Solarwinds generates all subnets with real-time DNS, PING and CIDR tests.This networking tool performs DNS resolution, address translation, supports CIDR and Address Class information. It calculates subnets based on Subnet Mask, Mask Bits, Host Bits, Number of Subnets... Platforms: Windows

IPlib is a Python module to convert between many different IP address notations and to manage netmask/address pairs in the CIDR notation. Some example scripts ("ipconv", "nmconv", and "cidrinfo") are included.. Platforms: *nix

Subnet calculator for Microsoft Windows with support for CIDR (Classless Internet Domain Routing) and wildcard masks. Platforms: Windows

The Advanced IP Address Calculator is a freeware Windows 95/98/NT/2000/XP utility that lets you to calculate every aspect of your subnet configuration in a few mouse clicks! It was designed for any network engineer who needs a fast way to determine subnets. Platforms: Windows

Net::IPv4Addr is a Perl extension for manipulating IPv4 addresses. SYNOPSIS use Net::IPv4Addr qw( :all ); my ($ip,$cidr) = ipv4_parse( "127.0.0.1/24" ); my ($ip,$cidr) = ipv4_parse( "192.168.100.10 / 255.255.255.0" ); my ($net,$msk) = ipv4_network( "192.168.100.30" ); my $broadcast =... Platforms: *nix

Tableutil is a utility for converting, aggregating and performing operations (currently unions, differences, complements and intersections) on lists of IP-addresses. Tableutils primary use is to convert files into a format pfctl(8) can read, but if you find another use for it Id really like to... Platforms: *nix

jwhois provides an Internet Whois client with support for Whois, Rwhois, and HTTP. jwhois is an Internet Whois client that contains an extensible configuration file, which defines its operation. The client supports queries to foreign hosts, either through the RFC 954 - NICNAME/WHOIS protocol,... Platforms: *nix

ipcalc project takes an IP address and netmask and calculates the resulting broadcast, network, Cisco wildcard mask, and host range. By giving a second netmask, you can design subnets and supernets. It is also intended to be a teaching tool and presents the subnetting results as... Platforms: *nix

Thresh is an application for Snort that manages alert thresholding and suppression. It was designed to assist the administrator with tuning one or more Snort sensors. The project was designed to run under Red Hat flavors of Linux. It summarizes Snort Alerts by alert count, allows creation and... Platforms: *nix

NetAddr::IP::UtilPP is a Perl module with pure Perl functions for NetAddr::IP::Util. SYNOPSIS use NetAddr::IP::UtilPP qw( hasbits isIPv4 shiftleft addconst add128 sub128 notcontiguous ipv4to6 mask4to6 ipanyto6 maskanyto6 ipv6to4 bin2bcd bcd2bin ); use NetAddr::IP::UtilPP... Platforms: *nix

Net::Connection::Sniffer::Util are netaddr utilities. SYNOPSIS use Net::Connection::Sniffer::Util; my $ip = newcidr24 Net::Connection::Sniffer::Util($netaddr); my $ipcopy = $ip->copy; if ($someip->within($ip)) { do something... if ($ip->contains($someip)) { do something... if... Platforms: *nix

Parallel Network Scanner provides a fast network services scanner. pnscan is a scanner for TCP network services. It uses multithreading to increase its speed. pnscan tries to be smart as to how many threads to start - it will dynamically start only as many as is needed to make progress in the... Platforms: *nix

network jack is an Internet troubleshooting and information gathering tool. It provides a Web interface to several common command-line tools, including ping, traceroute, dig, and whois, as well as a subnet mask and CIDR block calculator. Current Modules which you can find in the application:... Platforms: *nix

Xealous Nets is a set of programs that let you perform network calculations. Network calculations are useful and handy for the typical network administrator as they allow classful calculations and classless (CIDR) calculations, combining the functionality given by several online similar... Platforms: *nix

moltiblock is a user-space plugin to netfilter for blocking lots of nets. No need to recompile kernel or patch other sources. To install just type make. Then copy the binary to /usr/local/sbin or wherever. Put one CIDR per line in /etc/moltiblock/cidr.deny, like so: -- snip --... Platforms: *nix

Whatmask provides a subnet info utility. Whatmask is a small C program that helps with network settings. Notations supported are CIDR (e.g. /24), Netmask (e.g. 255.255.255.0), and Wilcard Bits (e.g. 0.0.0.255). These notations are all identical. CIDR notation commonly has a "/" in front of... Platforms: *nix

A small utility for calculating IPv4 addresses and subnet masks. It is particularly useful when designing hierarchical addressing plans. Also warns when non-CIDR address and mask combinations are attempted. - Adds option to invert (complement) critical values. Useful for determining masks. Platforms: Mac