Securing networks and protecting them is vital to protect a company's assets. We use different zones and topologies, network separation and segmentation, and install firewalls to prevent unauthorized access to the network. First of all, let's look at different zones and topologies. There are three main zones - LAN, WAN, and DMZ:
- Local Area Network (LAN): A secure network with very fast links and a web server, called the intranet, that holds internal-only information, such as classified data, manufacturing price lists, or the internal forms library.
- Demilitarized Zone (DMZ): A boundary layer between the LAN and the WAN that holds information that companies may want people from the internet to access. You may put your email server in the DMZ but never a domain controller. The web server inside the DMZ is called the extranet, which...
