Unfortunately, your virtual sites may be closed and your property may be harmed. You can use the free software Firewall to block simple DDOS and SYN attacks ….
DDos Blocking and Blocking SYN Attacks
What we need to do now is to configure Firewall config.
NO_OF_CONNECTIONS=100 >An ip address can make a maximum of 100 connections.
BAN_PERIOD=500 >If the same ip address reaches 150 within 10 minutes, it bans
EMAIL_TOfirstname.lastname@example.org You enter your current active e-mail address and send an e-mail when the attack occurs.
APF_BAN=1 Required if you are using APF 1 if you are not using 0
Software Firewall ready for DDOS And SYN attacks ..