Firewallng 101 - What am I doing wrong?

[riahc3]

This is puzzling my mind and Im starting to think the FW is glitchy....that or Im doing something really wrong.

This is a router with a web GUI interface.

I have this:

Doesn't look that difficult? Now I want to block ONE IP from being able to access the web GUI:

I add this (a local IP for testing). Once I apply it, none of my PCs on the network can access (or for that matter ping) that router's GUI.

Here is setting up a rule:

As you can see, standard, nothing strange:

Mode: Allow or Deny
Incoming Interface: WAN, LAN1, LAN2, and other options that don't apply in this case
Outcoming: Same thing
Source: Any or that rest ask me for a IP and a subnet
Destination: Same thing
Protocol: Any, TCP, UDP o ICMP. If I select TCP or UDP it asks me for a port.

Im problably doing something (stupid) wrong so I apologize for my stupidity and ignorance before hand but I cannot seem for the life of me to get it to work properly. This is just a test but at the end of the day I only want certain static IP addresses (both private and public) to be able to access it

Thank you

 

[KillerBee]

If want to specify one IP use /32 instead of /24 (entire subnet)?

 

[riahc3]

If want to specify one IP use /32 instead of /24 (entire subnet)?

So then:

 

[riahc3]

If want to specify one IP use /32 instead of /24 (entire subnet)?

Correct. I deserve a huge facepalm. Makes sense.