DoS / DDoS attack on your Web / Home Server - Ubuntu

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// verify HTTP / SYN

netstat -an | grep :80 | sort

// verifiy all TCP / UDP connections

netstat -ntu | grep ESTAB | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -nr

//Bans IP's

//iptables -A INPUT 1 -s IPHERE -j DROP/REJECT

iptables -I INPUT -s 192.168.1.35 -j DROP
iptables -D INPUT -s 192.168.1.35 -j DROP


// Kill && Restart connection

killall -KILL httpd

service httpd start           #For Red Hat systems
/etc/init/d/apache2 restart   #For Debian systems