Use Firewall
A firewall is considered the first line of defense against any cyber-attack. It is so because it acts as the boundary between the incoming and outgoing traffic of a particular network. So, whatever bug intends to attack the network, the firewall identifies it at first hand and thus do not let that bug enter the protected network. In this way, the network remains protected from harmful and unwanted traffic, thereby increasing the security of the network.
There are multiple ways in which a firewall can be installed in a particular network. It is also possible to install multiple firewalls within a single network. So, it is up to the IT administrators how many firewalls do they deem appropriate. However, the general rule says that firewalls are most effective at the network perimeter. By definition, a network perimeter is basically a boundary between an internal network (which is protected) and a public network (which is an untrusted one). Putting up a network firewall at this location bestows a lot of advantages, as all of the incoming and outgoing traffic will pass through this point. So, the firewall would be in a much better position to keep the network safe at the very earliest. Recent developments have paved ways for next-generation firewalls where they will be equipped to include Unified Security Management (USM), which allows them to integrate the system’s security information into a single console. This integration will improve cybersecurity manifolds as currently there is a shortage of skilled workforce in this domain.