CSF DDOS
csf ddos protection - CSF firewall ddos configuration
How Configure DDOS Prevention Settings in CSF firewall ?



DDOS

Before discussing how to control DDoS attack using CSF, let me explain what is DDOS attack and how it affects the smooth functioning of a server. DDoS stands for Distributed Denial of Service. It is an attempt to make an online service unavailable by traffic flooding from multiple sources. This makes it impossible to stop the attack by blocking a single IP and also it is difficult to find out the legitimate user from the traffic.


Controlling DDoS attack using CSF

Most of the cPanel servers will use Config Server Firewall(CSF) settings to prevent their servers. Here, I am going to provide some steps to manage a DDoS attack by tweaking the features in the CSF settings.
To check server is under DDoS attack:

You can run the below commands to check whether the server is under attack or not.
To show the number of connections and IP address,

:
netstat -alpn | grep :80 | awk '{print $4}' |awk -F: '{print $(NF-1)}' |sort | uniq -c | sort -n

DoS DDoS .
PORTFLOOD SYNFLOOD CSF DDOS. SYNFLOOD .

SYNFLOOD .

1- WHM
WWW.YOURSITE.COM:2086
YOURSITE

2- Plugins



3- ConfigServer Security & Firewall



4- Firewall configuration



5- Port Flood Settings
:
SYNFLOOD = "ON"

SYNFLOOD_RATE = "30/s"

SYNFLOOD_BURST = "10"

SYNFLOOD_RATE: SYN IP .

SYNFLOOD_BURST: IP CSF.



6- PORTFLOOD :
: UDP Flood Protection
:
UDPFLOOD = "ON"
UDPFLOOD_LIMIT = "100/s"
UDPFLOOD_BURST = "500"



7- change



8- CSF




:
https://www.interserver.net/tips/kb/...-csf-firewall/
https://www.supportsages.com/configu...-ddos-attacks/