mod_ratelimit in WHM server

# Setting up mod_ratelimit on cPanel Server
# Provides additional stability on the server by rate limiting bandwidth, thereby slowing down connections and helping to stabilise server
# Useful help: https://usavps.com/blog/13241/
# Useful help: https://httpd.apache.org/docs/2.4/mod/mod_ratelimit.html
# Useful help: https://maj0rmil4d.medium.com/how-to-limit-bandwidth-per-connection-on-apache-ratelimit-d59e8057ca7b

# 1) Check you have installed modules via easyapache; mod_ratelimit and mod_env

# 2) go to WHM > Apach config > include editor > pre-virtual hosts 

# Add the following - if specific vhost, use just their domain e.g. example.com 

#+++++++++++++++++++++++++++++++++++++++++++++++++++++

#check mod rate_limit is up and running
<IfModule mod_ratelimit.c> 
# target yourdomain.com specific domain
# allow burst of up to 1024 mb/s, then slow to 512
    <VirtualHost yourdomain.com:443>
        <Location />
            SetOutputFilter RATE_LIMIT
            SetEnv rate-initial-burst 1024
            SetEnv rate-limit 512
        </Location>
    </VirtualHost>
	
# target all other domains
    <VirtualHost _default_:*>
        <Location />
            SetOutputFilter RATE_LIMIT
            #SetEnv rate-initial-burst 1024
            SetEnv rate-limit 1024
        </Location>
    </VirtualHost>
</IfModule>


#Test the download speed: 
# example:
# root> curl -o /dev/null -w "Transfer speed: %{speed_download} bytes/sn" https://yourdomain.com