Posted on 2004-03-28
I offer psybncs and shell access and all that, and my server recently was hit by DDOS. I have recently blocked any ICMP packets, and blocked any incoming UDP packets except port 53 (for DNS). I tried to ddos myself, and succeeded in preventing any PING ddos but when i UDP'ed myself my server was still hit. Where have I gone wrong? I also want to prevent TCP syn packet DDOSing, and i read somewhere that by filtering incoming TCP syn requests to drop any packets after a certain number of packet/sec is possible, but I am fairly new to this and I need some help in configuring my firewall. Can anyone give some examples on how to prevent DDOS attacks, or at least minimize them?