question

@JosephSundarRajPaulraj-7178 , Apologies for the delay in response. Looks like the Az Firewall network rule collection group commands were still under preview and under development.

This looks similar to this GitHub issue where on giving resourceID we see null.

Please do reach us at azcommunity@microsoft.com for further help on this PS module. Meanwhile, we will work with the respective PG team and will get back to you.

Please do not forget to "Accept the answer" wherever the information provided helps you to help others in the community.

Hi there,

Use the Get-NetFirewallRule cmdlet to get the entire list, and then filter on the Enabled and Direction properties:

Get-NetFirewallRule | Where { $.Enabled –eq ‘True’ –and $.Direction –eq ‘Inbound’ }

The Get-NetFirewallRule cmdlet returns the instances of firewall rules that match the search parameters from the user.

This cmdlet returns one or more firewall rules by specifying the Name parameter (default), the DisplayName parameter, rule properties, or by associated filters or objects. The queried rules can be placed into variables and piped to other cmdlets for further modifications or monitoring.

Here are some articles as well to help you out https://docs.microsoft.com/en-us/powershell/module/netsecurity/get-netfirewallrule?view=windowsserver2019-ps

https://devblogs.microsoft.com/scripting/powertip-use-powershell-to-list-firewall-rules/

--If the reply is helpful, please Upvote and Accept it as an answer--

Hey,

Following code should work,

     # Get the config of the current Azure Firewall Policy
     $azFwPol = Get-AzFirewallPolicy -Name $fwPol -ResourceGroupName $resourceGroupName
        
     # Get RCGs IDs (didn't found a command that retrieve directly the RCGs Names)
     $rcgsIds = $azFwPol.RuleCollectionGroups
    
     # Get RCGs Names from RCGs IDs
     $rcgsNames =  foreach($rcgId in $rcgsIds) {
         $rcgId.Id.Substring($rcgId.Id.LastIndexOf("/")+1)
     }
    
     # For each RCG 
     foreach($rcgName in $rcgsNames) {
         # Get Azure RCG object
         $rcg = Get-AzFirewallPolicyRuleCollectionGroup -Name $rcgName -AzureFirewallPolicyName $fwPol -ResourceGroupName $resourceGroupName