website attack

still new at this but so far what ive got is:
when you attack a site. you need to first scan it for open ports to see which are open for attack via http flooding.
after that you just need to find the a port that will be the most annoying when flooded and flood it.
so far ive tried flooding a website. and was flooding its ftp port. but it for sumreason only had a max for 50 connections at a time.
the server also had its port 80 closed or hidden or something. when i tried to scan it didnt pick it up and when i tried flooding it nothing happened.

anyone got any of thier experiences and want to share or have and ideas or suggestions post away.

btw i didnt notice any rules sticky or anything. so i guess anything related to section goes?

and another thing this is purely for educational purposes and i do not approve of any illegal activity and can not be held liable for any illegal activity you do after reading this as this is purely for educational purposes nothing else.