Flood from comcast.net how do I protect myself?

comcast.net is flooding my server.
I added a range bans plugin and banned the hostname but they still connect, enter the game, and then being kicked = fillin out the slots and making major lagg.

I am surprised there's still nto an answer.

I don't believe I am the only one that god flooded.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

If you have linux: http://www.cyberciti.biz/faq/how-do-i-block-an-ip-on-my-linux-server/

To block an entire ip range, go here: http://ip2cidr.com/ (line prefix none)

The command should look something like this:

Code:

iptables -A INPUT -s 65.55.44.0/24 -p tcp --destination-port 25565 -j DROP

if http://ip2cidr.com/ gives multiple ranges, execute the command multiple times:

Code:

iptables -A INPUT -s 65.55.44.127/32 -p tcp --destination-port 25565 -j DROP
iptables -A INPUT -s 65.55.44.128/25 -p tcp --destination-port 25565 -j DROP

 

The host machine is on Win7.