I. Identify that hybrid firewalls combine the elements of other types of firewalls—that is, the elements of packet filtering and proxy services, or of packet filtering and circuit gateways.
II. Propose how, alternately, a hybrid firewall system can consist of two separate firewall devices; each is a separate firewall system, but they are connected so that they work in tandem.
III. Report the most recent generation of firewalls, known as Unified Threat Management (UTM) and the Next Generation Firewall (Next Gen or NGFW). Point out that UTMs are categorized by their ability to perform the work of an SPI firewall, network intrusion detection and prevention system, content filter, spam filter, and malware scanner and filter.
IV. Contrast that smaller organizations may prefer to have an all-in-one firewall approach due to budgetary constraints, whereas larger organizations may have separate firewalls.