Category: Firewalls

A network-based firewall controls traffic going in and out of a network. It does this by filtering traffic based on firewall rules and allows only authorized traffic to pass through it. Most organizations include at least one network-based firewall at the boundary between their internal network and the Internet. The network-based firewall is usually a […]

Host-Based Firewalls A host-based firewall monitors traffic going in and out of a single host, such as a server or a workstation. It monitors traffic passing through the NIC and can prevent intrusions into the computer via the NIC. Many operating systems include software-based firewalls used as host-based firewalls. For example, Microsoft has included a […]

A firewall is a network security system, either hardware or software-based, that controls incoming and outgoing network traffic based on a set of rules. A firewall physically sits between your network and the Internet and hides your network from others on the Internet. At its most basic level, a firewall is an Internet router that […]