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项目作者： bluekeyes

项目描述 ：
Inspect and subtract CIDR blocks
高级语言： Elm
项目地址: git://github.com/bluekeyes/cidrtool.git
创建时间： 2018-03-29T06:03:43Z
项目社区：https://github.com/bluekeyes/cidrtool
开源协议：MIT License
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cidrtool

A simple application and Elm library for inspecting and subtracting CIDR
blocks. Try it out: https://bluekeyes.github.io/cidrtool/

Why?

Two reasons:

  1. Subtracting CIDR blocks seemed like an interesting problem
  2. I wanted to build a thing with Elm

If you find yourself also needing to subtract CIDR blocks, something’s probably
gone wrong already. But one place where it might be useful is when you have an
ALLOW-only firewall (like an EC2 security group) but you really want to DENY a
specific IP range. Take the overall allowed range, subtract out the deny
range(s), and add ALLOW rules for the result.

This will quickly become difficult to maintain and will probably run into
limitations on the number of allowed rules per security group. But until then,
it will (probably) work!

Development

Clone the repository, then run:

  1. npm install
  2. npm run start

You can view the application at http://localhost:8080 and it will live-reload
as changes are made.

To build a production version for distribution, run:

  1. npm run build