Pre alpha development

Please note that orangengine is still considered pre alpha and has not made a public release yet. Soon...

orangengine

Firewall Policy Automation Engine

Orangengine is a netmiko/napalm like library for working with network firewall policy.

Currently we support these platforms:

• Juniper SRX
• Palo Alto Networks - Panorama Device Groups
• VMware NSX DFW (road map)

Orangengine works by connecting to a device and parsing its policy into a common data model. This allows us to interact with the policy in an abstracted, vendor neutral manner. Here is a simple example of a policy representation in orangengine:

my_policy = {
    'source_addresses': ['10.0.0.1/32', '10.20.0.2/32'],
    'destination_addresses': ['10.50.0.1/32'],
    'services': [('tcp', '443'), ('tcp', '22')],
    'action': 'permit'
}

Getting Started

First we will need to define the parameters needed to make a device connection.

device_params = {
    'device_type': 'juniper_srx',
    'ip': '192.168.188.2',
    'username': 'admin',
    'password': 'admin',
}

device_type defines what kind of device we are connecting to so we use the appropriate driver. Generally there is a common set of params among the device drivers such as username, password, etc. Some drivers have support for other parameters, for example you can connect to a Palo Alto Networks device using an api_key.

Now we can dispatch our device connection using our parameter dictionary.

device = orangengine.dispatch(**device_params)

This will return us an instance of our device object using the given driver and by default will open a connection to the device and parse the entire policy base.

At this point with a fully parsed policy, we can do a number things like search the policy base or request a candidate for a new policy or policy addition. Let's look at a simple policy search (called a policy match) example.

Using the policy model described above, lets find all policies that have 10.0.0.1/32 as a destination with an action of permit.

match_criteria = {
    'destination_addresses': ['10.0.0.1/32'],
    'action': 'permit',
}

Now we use the most basic matching function to search the policy base and return a list of matched policies.

matched_policies = device.policy_match(match_criteria, match_containing_networks=False)

As you can see, by default policy_match() will search contianing networks. Meaning in this example, we would have gotten result for polciies containing 10.0.0.0/24 if match_containing_networks was true.

Finally, we can simply print the matched policy names.

for p in matched_policies:
    print p.name