mkol5222 / crown

Crown

micro-segmentation rulesets managed from Check Point SmartConsole

Description

Edit policy in Check Point SmartConsole, enforce as Azure NSGs or Kubernetes Pod Network Policies.

Requirements

• Deno - JavaScript/TypeScript runtime - install
• Azure Service Principal - create

Setup

Configure CP Security Management access using .env similar to example:

CPSERVER="yourown-za8upq50.maas.checkpoint.com"
CPTENANT="ccae851f-tttt-4fcf-a0da-c50788f1dde3"
CPAPIKEY="useyourownkey"

Configure Azure access using SP in terraform.tfvars similar to example:

client_secret="ucJ---use-your-own-SP"
client_id="451---use-your-own-SP"
tenant_id="016---use-your-own-SP"
subscription_id="f4a---use-your-own-SP"

Usage

deno task start

Explore NSGs with aztfexport tool

# IMPORTANT!
mkdir tmp; cd tmp
# discover your own NSG in Azure Portal and replace ID below
aztfexport res /subscriptions/f4ad5e85-ec75-4321-8854-ed7eb611f61d/resourceGroups/rg-test-nsg101/providers/Microsoft.Network/networkSecurityGroups/Default
# look at it
code terraform.tfstate

Explore NGSs in TF state with Powershell

# list resources in a terraform state file
gc ./tmp/terraform.tfstate | ConvertFrom-Json | select -ExpandProperty resources

# focus on NSGs
$nsgs = gc ./tmp/terraform.tfstate | ConvertFrom-Json | select -ExpandProperty resources | where {$_.type -eq "azurerm_network_security_group"}
$nsgs

# first one
$nsgs[0].instances[0].attributes

# rules
$nsgs[0].instances[0].attributes.security_rule

Install Policy to NSG

Rulebase in SmartConsole:

Converted to NSG using:

deno task start | Set-Content .\nsg.tf.json

terraform apply

Review generated rulebase with Powershell

# see NSG
gc nsg.tf.json | ConvertFrom-Json | % { $_.resource.azurerm_network_security_group."example-nsg-2"} | fl

# list rules
gc nsg.tf.json | ConvertFrom-Json | % { $_.resource.azurerm_network_security_group."example-nsg-2".security_rule} | ft *

gc nsg.tf.json | ConvertFrom-Json | % { $_.resource.azurerm_network_security_group."example-nsg-2".security_rule} | fl