Basic Security

Changing the Default SSH Port (Linux / CentOS)

SSH is one of the most commonly attacked services as it provides easy access to full control of a dedicated server. Changing the default SSH port...

Changing the Default SSH Port (Linux / Ubuntu / Debian)

SSH is one of the most commonly attacked services as it provides easy access to full control of a dedicated server. Changing the default SSH port will...

Disable Recursive DNS (Linux / Windows)

DNS is used to translate hostnames into IP addresses. When DNS servers are misconfigured, they can be used to conduct DDOS attacks using your dedicated server. We...

Disabling SSDP (Linux / Windows)

SSDP is used by some consumer-level equipment for network discovery. It does not have any real use on public servers and is used for reflection DDoS...

Enabling and basic configuration of the firewall settings (Linux / Ubuntu)

Enabling the firewall will help you protect your dedicated server from unwanted connections to private services that you may want to disable from the public internet. By...

Securing NTP (Linux Only)

NTP is used for ensuring the time on your dedicated server is accurate. Some configurations of this software cause it to be vulnerable to being abused to conduct DDoS...

Securing SNMP (Linux / Windows)

SNMP is used for remote monitoring and configuration of dedicated servers. If you have not changed the default community string of ‘public’ or ‘private’, your server may...

Setup ConfigServer Security and Firewall (CSF) on CentOS 7

ConfigServer Security & Firewall (CSF) is a stateful packet inspection firewall (SPI), login/intrusion detection, and security application for Linux servers. It is a very popular security suite, but...

Securing SSH on Ubuntu 14.04

After you create a new server, there are some configuration tweaks that you should make to harden the security of your server. Create a new...

Use an SSH Key with Non-root Users

Introduction AKLWEB HOST provides a feature that allows you to pre-install SSH keys when creating a new instance, so you can SSH to the instance...

How to Enable or Reinstall SELinux on CentOS

Introduction Security-Enhanced Linux (SELinux) is an enhanced security mechanism at the kernel level. Follow this guide to reinstall SELinux and reset the policy to default...