m0n0wall Forum - Does "Not" also apply to ports ?

Hi Folks,

I finally set up my dedicated P2P machine (http://forum.m0n0.ch/index.php/topic,976.0.html). Therefore i updated my trafic shapers rule and everything that comes in/goes out this machine will be put into m_hated download and m_hated upload. Since i sometimes want to update the antivirus on this machine or download windows updates i excluded port 80 and 443.
For example for the download rule i set it up with destination "any" and destination port HTTP and i checked the "not" box. The source host is my P2P machine. Every packet handled by this rule will get into the m_hated download queue.

My question is : Does this work the way i figured it out ? I.e.: Putting every trafic from the P2P machine into the m_hated download queue except trafic going to port 80 on remote hosts ?