How to increase network speed on CentOS

# ethtool eth0 | grep -i speed
# ethtool -s eth0 speed 100 duplex full
# ethtool -s eth0 autoneg on
# ethtool -r eth0
# wget -O /dev/null http://www.singlehop.com/speedtest/500megabytefile

1) Download the following PHP files from MaxMind: geoipcity.inc, geoip.inc, and geoipregionvars.php – http://geolite.maxmind.com/download/geoip/api/php/

2) Download the latest GeoLite City Binary Format file, which is updated on the 1st of each month, and unzip it

PCI Vulnerability Error – SMTP server use secure authentication – on cPanel

Login into WHM

Select “Exim Configuration Manager” > “Security”

Turn on
Require clients to connect with SSL or issue the STARTTLS command before they are allowed to authenticate with the server.

… It’s done

Installing NGINX for Apache and cPanel/WHM server proxy

1. Install mod_rpaf:

- Since Nginx will be reverse proxy for Apache, we don’t want our log file to record the proxy IP. We want the real IP as usual. This will make sure our

Change pureftp default port from 21 to XXX in cpanel/centos

Edit Pure-ftpd conf file: nano /etc/pure-ftpd.conf

Locate: #Bind 127.0.0.1, 21

Uncomment and change it to: Bind IP Address,Port Number
example: 61.21.42.78, 200

Restart FTP server: /etc/init.d/pure-ftpd restart