What is a Personal Firewall? (Personal Firewall vs. Regular Firewall)

Although no two types of malware are alike, the most dangerous ones can allow cyber thieves to obtain your most sensitive data, erase your files, and even harm your machine's hardware. Both Macs and Desktops have built-in firewalls that help safeguard your computer from hostile cyber-attacks. Still, you can buy and install a personal firewall if you want an extra layer of security.

A personal firewall is software that protects internet users from hackers by allowing or disallowing network traffic to and from their computers and alerting them to potential intrusions. It works as a filter between your network and the Internet.

How Does a Personal Firewall Differ from a Conventional Firewall?

A personal firewall is a sort of firewall meant to keep harmful traffic out of a single machine. It varies from standard network firewalls fundamentally: it is also referred to as a host firewall.

  • A single computer's traffic is analyzed and filtered by a personal firewall. On the other hand, a network firewall analyses and censors traffic for an entire network, such as a company's LAN.

  • Personal firewalls constantly monitor all signals in and out of a computer. Network Firewall refers to the methods of securing the Network Infrastructure in Internet Networking. As a result, a network firewall might be software or hardware-based.

  • In terms of scalability, a personal firewall differs significantly from a traditional firewall. In contrast to a standard firewall, which is typically installed on a defined interface among two or more networks, such as a gateway or proxy server, a personal firewall usually protects only the device on which it is installed. A traditional firewall regulates the policy between the networks it connects, whereas personal firewalls enable a specific security protocol for individual machines.

Personal firewalls with a per-computer scope help protect computers moved between networks. A laptop computer, for example, might be used on a trusted intranet at a workplace where a conventional firewall already exists and services that require open ports, such as file and printer sharing, are helpful. The same laptop might be used at open Wi-Fi hotspots, where the level of trust must be determined and firewall settings modified to restrict traffic to and from the device. A firewall can be configured to accept various security policies for each network.

  • Many personal firewalls, unlike network firewalls, can limit network traffic that is allowed to applications on the secured computer.

  • Personal Firewalls may also aid in the prevention of intrusions by allowing the program to deny connectivity when it detects an effort at intrusion is being made.

Why Are Firewalls Important?

Firewalls play a significant role in protecting a network and its assets from dangerous malware. They initially appeared during the early Internet days, when networks needed new security mechanisms to cope with growing complexity. In the client-server model, the central structure of modern computing – firewalls, has since become the foundation of network security. Most devices use firewalls or similar tools to analyze traffic and neutralize dangers.

You can use a personal firewall to protect your computer from various cyber-attacks. Malware attacks, for example, are much less likely to happen if a personal firewall protects your device. The majority of malware comes from the Internet. If you use a computer to browse or otherwise utilize the Internet, it may get potentially compromised. Malware can't get onto your computer if you use a personal firewall.

Access controls are another advantage of utilizing a personal firewall. You could use a personal firewall to create access permissions for specific users.


In addition to a network firewall, you can utilize a personal firewall. To attain a greater level of security, personal firewalls and network firewalls are frequently used in tandem. A firewall will help shield your entire malicious network traffic, while a personal firewall will only protect your computer. When both types of firewalls are used, two walls of protection are created instead of one.