Simply put, firewalls act as a vital filter between a device and the public Internet. Certain types of data fade and disappear, making online user activity much safer, with different types of firewalls and available filtering options. A firewall can protect device security in a number of ways.
Often the simplest form of firewall is used for personal or home use, with the primary purpose of protecting the personal computer and private network from cyber attacks. Malicious software and viruses such as malware, trojans and ransomware are usually spread through fraudulent email attachments and fraudulent websites – the ultimate goal is to compromise sensitive information.
On the corporate side, firewalls tend to be much more complex because WANs, especially large businesses, require an elite level of protection tailored to their needs. Firewalls are often configured to prevent employees from sending/sending confidential information to the outside world and to limit access to distractions at the workplace, such as social networking sites, on the network. Firewalls can also block external devices from accessing devices on the network.
In addition, in order to improve security, file sharing may be limited to one computer on the network, at the discretion of the company. In most cases in large enterprises, and of course in enterprises of corporate type, there is a dedicated IT team responsible for monitoring data security protocols, while firewall configurations are regularly monitored and changed.