Setting up IP ACLs

Hello Netgear community,

It's my first post here, whoever is reading this post, thank you and it's nice to e-meet you!

I need some help setting up IP ACLs in my switch, a XS716T running the official software 7.0.0.24.

I'm kind of following this article  but there are a few differences.

I realize this article wasn't written for my switch model, but I think it's close enough.

The main difference is that I only have two VLANs, the default VLAN (1) and another one (50). I intend to use the latter to have some services available to the outside world for testing purposes.

The goal is that equipment in VLAN 1 can reach VLAN 50, but not the other way around.

Also, since there will be published services, machines on VLAN 50 must be able to reach the Internet and be reachable through the Internet (ports will be redirected in the router).

Note: I'm not sure why the images are not showing up. Please find them here:

https://www.filehosting.org/file/details/973079/screenshots.zip

Below these lines you can find the current VLAN and routing configuration.

As it stands, equipment in both VLANs are able to reach each other as well as the Internet.

I've tried to apply ACLs, but I'm pretty sure the whole problem is that I don't really understand how ACLs work (sorry). So, I'm not able to find the right ones. I always ended up on a situation where both VLANs are isolated from each other.

Any assistance with be greatly appreciated. Also, if I have done something wrong on the routing side of things, please do let me know.

Thank you!