The growing use of digital tools and the internet greatly increases business security risks. One key measure to control these cyber threats is the firewall, a solution that protects company data and devices by reducing virtual threats and also improves internet availability.
A firewall, which can be a piece of software or a hardware device, filters the connections that enter an organisation’s internal network as well as those going outwards.
These restrictions prevent unauthorised internet users from accessing the company’s network or internal users from connecting to external services for which they have not been previously authorised.
How a firewall works
The firewall acts as a filter that examines all data packets heading towards the corporate network and compares the header information with the predefined rules. If the IP address and port are valid according to those criteria, the packet is delivered; otherwise, it is discarded. The same process is applied to outgoing packets.
Firewalls can also help manage bandwidth and balance network traffic by reducing the amount of data passing through the network — which can be especially useful for businesses with limited data budgets.
In this way, the firewall serves as the first line of defence, performing a series of essential tasks:
- Monitor incoming and outgoing communication between devices connected to the same network or the internet.
- Block network traffic linked to applications that appear suspicious or malicious.
- Alert about connection attempts made from unknown devices and prevent unauthorised users from accessing the internal network.
- Prevent malware from entering.
- Adapt to changes and advances in cyberattack techniques.
An essential element for your company
As we’ve seen, firewalls are a vital part of every organisation’s security system. If you want to protect your company from cyberattacks, stay compliant, and filter harmful content, a firewall is an indispensable tool.
Although there is no such thing as 100% security in the digital world, a firewall, combined with other measures such as antivirus software or VPNs (virtual private networks), greatly enhances the protection of a company’s data and communications.
Firewalls that come pre-installed on many computers, such as Windows Firewall, are quite limited, so the best option is always to use a business-grade firewall, supported by proper technical assistance, since these devices need to be regularly updated and maintained.
If you’re considering strengthening your security and implementing a firewall in your company, Inmove IT Solutions can help you choose the option that best fits your needs. We offer a range of products and services to reinforce your cybersecurity strategy.
