Try to block a single internal IP… but it doesn't work

[adrienb]

Hi guys,
I'm trying to block an internal IP address (just to name it : 192.168.0.121 but we don't realy care)
To do that I create a block rule but to no effect as the IP is still able to consume most of my bandwith
here is the rule that I have created, please tell me what's I'm doing wrong :
action = block
interface = LAN
Protocol = TCP (I also tried all, to no effect)
Source = nothing set
Destination
  Type = single host or alias
  Address = 192.168.0.121

Thank you !

[johnpoz]

And where did you put the rule?  Below the allow any any..

Rules are top down..  First rule that matches wins.

If you don;t want 192.168.0.121 to use the internet.  That would be the source not the destination, destination would be any.

[adrienb]

Yep you're right, I put it at the last position.
I moved it up and change destination for source
thank you !