I understood that the firewall was mainly the port control function of the OS.

However, I learned that it sometimes refers to the device or system itself that blocks communication that should not be passed .
In other words, if a router or gateway device in the network is responsible for monitoring ports, packets, and protocols, these are called firewalls to distinguish them.

In the background that came into the spotlight in recent years,

  • A wide variety of cyber attacks have increased, and the security functions required for devices that are gateways to networks have increased.
  • Due to the spread of remote work, there has been a demand for access to the internal network from the outside. (Until now, it should have been denied all access from outside to inside)

Under such circumstances, it seems that network equipment vendors have come to call products that include various security measures functions as “next-generation firewalls (NGFW).”

FortiFate’s product explanation site is easy to understand because the functions that can be done are organized.

If this multi-function can be easily set on the management screen and there is little network delay, I think there is an advantage to introducing it.

However, if you set up the router properly, I think that you can take sufficient security measures without introducing such high-performance products.