What a firewall is used for

Businesses are the number one target for cybercriminals today, suffering daily from various types of attacks that can have disastrous consequences for their operations, such as theft of important or personal data, system crashes that interrupt services and business activities, or malfunctioning tools and equipment. Having a good IT maintenance service for businesses is the best solution to ensure the highest protection and performance of IT resources, implementing protection systems like antivirus software, firewalls, or automatic software update systems. Below, we will discuss firewalls, what a firewall is used for, and why it is essential in professional, industrial, or business environments.

What is a Firewall

A firewall is a cybersecurity system that blocks unauthorized access to a network or computer while allowing authorized services or connections. These protections date back to the 1980s when the rise of the internet highlighted the need to protect systems from unauthorized access and malicious attacks.

Types of Firewalls

We can differentiate two types of firewalls that are used to block access within a network or to a computer or information system.

• Software Firewall. This is a program that is installed on a device or system and monitors all network traffic, automatically applying a set of rules to control access.
• Hardware Firewall. This refers to physical devices specifically designed and configured to act as an intermediary protective layer between the network, devices, and internet access, controlling all data exchanges and access attempts.

How Does a Firewall Work

The firewall operates by staying in a listening or monitoring mode, keeping track of everything happening on the network, including controlling all data transfers and access requests both internally and externally (via the internet).

For the firewall to efficiently manage network access, it is necessary to properly configure it, which can be a complex process due to the multiple options available and the need to avoid affecting authorized services or access.

Efficient configuration of the firewall’s options and filters allows it to work automatically and independently, ensuring that the business network is protected from unauthorized or malicious third-party access.

Why Use a Firewall

A firewall is a valuable cybersecurity tool for protecting your company and ensuring business continuity. Here are several reasons why implementing a firewall should be a priority to improve your business’s cybersecurity.

Increase Security Levels

A firewall is an indispensable tool for having a solid protection and cybersecurity system in place. It integrates with other tools like antivirus software, security consoles, software updates, and security policies.

Firewalls are also useful in meeting the stringent Spanish and European data protection regulations (LOPD and GDPR), which require businesses to have the best means and tools to ensure the privacy and integrity of the information they handle.

Protect Against Different Types of Attacks

With both hardware and software firewalls, a company can protect itself from most attacks received by cybercriminals (such as Trojans, unauthorized access, DDoS attacks, etc.).

Prevent Unauthorized Access

One of the main cybersecurity risks that businesses face is unauthorized access to systems or devices. The firewall is the ideal tool to monitor the network and prevent anyone or any device without proper permissions from accessing services, files, or applications.

Work Automatically

The difficulty of using a firewall lies in its correct configuration. Once the optimal filters and parameters are set, the firewall will operate automatically and autonomously, monitoring the network, blocking unauthorized and potentially dangerous access, and allowing regular traffic.

Cost-Effective

Acquiring a good firewall does not require a significant financial investment, making it a feasible cybersecurity option for businesses of any size or industry.

While large businesses should use a combination of hardware and software firewalls, a software firewall is often sufficient for most small and medium-sized enterprises (SMEs) to protect their networks and systems (thus avoiding the higher cost of a hardware firewall).

Bandwidth Management

With a good firewall, businesses can efficiently manage their internet bandwidth to ensure that all devices and systems have high performance when accessing the internet.

More Information on Network Status

Firewalls monitor network traffic and status, providing valuable insights into vulnerabilities and cybersecurity hotspots. This information allows businesses to take action to resolve potential issues.

Many firewalls also offer options for generating reports that provide useful data to help make better decisions regarding IT assets and the information managed by the company.

We’ve discussed what a firewall is and how it serves as one of the most important tools for securing a company’s information and systems. If you want to improve your business’s protection, contact Parson Project Solutions, and we will offer a tailored service to meet your company’s needs and characteristics.