The different types of firewalls can be divided into categories based on their structure and method of operation. There are pros and cons to each firewall type, which we’ll also touch on in this section. 

Hardware firewalls

Hardware firewalls come in the form of a dedicated physical appliance. This firewall type is excellent at maintaining perimeter security, which keeps out any malicious traffic that might be trying to break into your network. 

These firewalls are similar to a traffic router that protects your network by intercepting data packets and traffic requests prior to connecting to your servers. 



Software firewalls

Software firewalls are installed on a local device and run on existing workstations and/or servers rather than on a dedicated hardware piece. 



Cloud firewalls

Cloud firewalls are delivered via the cloud. It’s also sometimes known as firewall-as-a-service (FaaS). Because of the nature of the cloud, these firewall types are easy to scale with your business. 

Technically, there are two types of cloud firewalls: those that protect your infrastructure and servers (Type A) and those that protect your business’s network and users (Type B). The “type A and B” terminology is just something we created to differentiate cloud firewall types. 

Type A firewalls are designed to use your business’s servers to run a virtual data center as an infrastructure-as-a-service (Iaas) model. The actual firewall application runs on the virtual server to protect in-and-out traffic between the cloud applications. 

Type B firewalls, in contrast, often come as stand-alone products or services that aim to protect your network and users. It’s similar to having a local firewall appliance, except it’s run on the cloud. This is the type that’s frequently known as FaaS. 


Our Managed Security Services is ready to provide your business with the technologies, insight, and oversight that your organization needs to stay ahead in the modern business landscape.