Firewall

Very simple firewall

Installation

Add this line to your application's Gemfile:

gem 'firewall'

And then execute:

$ bundle

Or install it yourself as:

$ gem install firewall

Basic usage

• Create a firewall instance

fw = Firewall::Firewall.new(false) # reject by default

• Add some rules

r = Firewall::Rule.new("192.168.1.0/24", true) # allow network
fw.add_rule(r)

• Let's check

fw.allowed?("192.168.1.15") # true
fw.allowed?("127.0.0.1") # false

Advanced rules

Lets assume you have an object that can do some checks

class Deletest

  def complex_check
    true
  end

end

delegate = Deletest.new

fw = Firewall::Firewall.new(false)
r = Firewall::ComplexRule.new("192.168.1.1", true, {delegate: delegate, method: :complex_check})
fw.add_rule(r)

fw.allowed?("192.168.1.1", true) # true
fw.allowed?("192.168.1.1", false) # false

or

fw = Firewall::Firewall.new(false)
r = Firewall::ComplexRule.new("192.168.1.1", true, {value: true})
fw.add_rule(r)

fw.allowed?("192.168.1.1", true) # true
fw.allowed?("192.168.1.1", false) # false

Contributing

1. Fork it ( https://github.com/davidterranova/firewall/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request