Hello, i'm an expert IT with more 15 years of experience in IT industry . i'm certified Cisco networking professional 300-100 and 300-115 and Linux professional lpi 101, 102 and RHCSA and VCP 4, 5,5.5 and Data Center and MSCA/MSCE ranging from 2003 to 2012 . if you use linux we can configure fail2ban to block ip and make same role in firewall to block ddos attack , sync attck , brute ssh attaqu ping me for me informations