Firewalls help protect you company form both internal and external threats. They block attackers from entering your system by protecting your ip addresses and managing what IP addresses are open to the public.

Your employees can also visit bad website (mostly by accident) that can expose your company to the dark web. The dark web is a majority of cyber-crime takes place. Downloading a program form a bad website can lead to malicious program being installed on your network as well as giving criminals access to your data.

Not only does a firewall protect you, it also helps you run a more efficient IT department. Creating secure VPN tunnels form one server to another can make logging into you network much easier. You can also create a VPN connection to hosted environments which can facilitate print to you office from any location.