[DanLore]

If it's a UDP flood you can definitely use IPtables to limit the effects, and let OVH take care of the larger attacks.

You could enter these rules via your command line...

PHP код:

-A udp-flood -p udp -m limit --limit 5/sec -j RETURN 
-A udp-flood -j LOG --log-prefix "UDP-flood attempt: " 
-A udp-flood -j DROP 


Then use

PHP код:

iptables save 


If any IP attempts to make more than 5 connections in a second, this will drop the connection. Works wonders on my server. Also logs the attempt, should you like to review attacks.