Blog : Security

firewalls
Most of us have heard of firewalls, but do we understand the concepts that make them work. This week, Host Africa will take a look at some basic firewall concepts and try to make them a bit easier to understand. Types of firewall Traditionally, there are two main types with many variations in-between. These two […]
SSL certificates at HOSTAFRICA.co.za
The assortment of SSL certificates available may be confusing and could result in purchasing more (or less) than we need. Using a few questions, we can quickly arrive at a correct decision. Is your website for personal or business use? This hinges on what you want your website visitor to see. Is a valid HTTPS […]
BASH - file permissions
File permissions in Linux are one of those things that you either spend some time getting to grips with (and then never forget) or you end up having to double check against Google every time you need to change a file permission. Hopefully, this article will assist you in the former and help you avoid […]
Which SSL certificate?
The assortment of SSL certificates available may be confusing and could result in purchasing more (or less) than we need. Using a few questions, we can quickly arrive at a correct decision. Is your website for personal or business use? This hinges on what you want your website visitor to see. Is a valid HTTPS […]
Preventing E-Mail fraud
Email has become the normal communication corridor for most business. As a result, it has been targeted more and more by fraudsters. We are not talking mail scammers here or junk mail. No – we are talking about full-blown mail fraud involving big sums of money. The problem is that we tend to trust email […]
Convert CentOS 7 FirewallD to iptables
How to convert your CentOS 7 firewall from FirewallD to iptables, and fix fail2ban On Centos 7, the default firewall is firewalld. Even though this is just a shell interface to configure iptables, it has its limits when it comes to applying advanced rules and customizing your firewall. You can fix this by getting rid of […]