Hi @Bmark 

Thanks for posting in our business forum.

You may use the label and tag to filter the existing guides and solutions for your ACL situation.

A glance at the screenshot doesn't provide any insights into the problem.

You should at least specify what group you have created and verify if you created them correctly.

Group creation involves the knowledge of CIDR and subnet. Make sure you know what you are doing before making a judgment that the ACL does not work.

It looks pretty easy to set up the ACL but it requires a way clearer mind of logic to configure them and understand how it works with some examples.

Hi @Bmark 

Thanks for posting in our business forum.

Bmark wrote

Hi  @Clive_A ,
thank for your help. I literally passed the last two days searching for every topic, guide, tutorial, i was not able to solve this.
I show you how i created the IP groups:
For example "Computer_Luca" is a range that covers from 192.168.1.1 to 192.168.1.19. 
"NAS" is just 192.168.1.20.


 

Every machine in the "Computer_Luca" range can reach the nas.

As you can see i created other groups with other devices, to test them.
I tried with other ranges, pc's, printers.
I am doing something wrong for sure but it is not easy to understand what.
If i try to block access within two networks it works fine, within two IP ranges i see no result.

Thank you again, hope to hear you back soon 

 

OK. Diagram of your network with IP specified.

Would be strange. Judging from the setup, it looks okay. It should be effective.