Installing firewall and timeserver

This page describes a few things that will make your server more secure.

Firewall and NTP installation instrucktions##

Instructions for configuring firewall, timeserver and swap file (centOS): https://www.digitalocean.com/community/tutorials/additional-recommended-steps-for-new-centos-7-servers

Instructions for configuring firewall, timeserver and swap file (Ubuntu): https://www.digitalocean.com/community/tutorials/additional-recommended-steps-for-new-ubuntu-14-04-servers

##More information about configuring firewalls##

https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-using-firewalld-on-centos-7

https://www.digitalocean.com/community/tutorials/ufw-essentials-common-firewall-rules-and-commands