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What Is a Firewall and Do you Need One?

Adam Levin

A firewall is a network security device or program designed to prevent unauthorized and malicious internet traffic from entering a private network or device. Firewalls filter incoming network traffic at a computer’s entry points, or ports, where information is exchanged between the computer network and external devices. Probably not.

Firewall 298
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Attackers exploit recently disclosed Palo Alto Networks PAN-OS firewalls bug

Security Affairs

Threat actors are exploiting a recently disclosed vulnerability, tracked as CVE-2025-0108, inPalo Alto Networks PAN-OS firewalls. Researchers warn that threat actors are exploiting a recently disclosed vulnerability, tracked as CVE-2025-0108, in Palo Alto Networks PAN-OS firewalls. ” states GreyNoise. h4 >= 11.2.4-h4

Firewall 100
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Zero-Trust DNS

Schneier on Security

ZTDNS aims to solve this decades-old problem by integrating the Windows DNS engine with the Windows Filtering Platform—the core component of the Windows Firewall—directly into client devices. ” By default, the firewall will deny resolutions to all domains except those enumerated in allow lists. .” ”

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Palo Alto Networks fixed a high-severity PAN-OS flaw

Security Affairs

Palo Alto Networks addressed a high-severity flaw, tracked as CVE-2024-3393 (CVSS score: 8.7), in PAN-OS software that could cause a denial-of-service (DoS) condition. An unauthenticated attacker can exploit this vulnerability to reboot the firewall by sending a malicious packet through its data plane. ” reads the advisory.

DNS 110
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Introducing Secure Firewall version 7.3

Cisco Security

Introduction to Cisco Secure Firewall 7.3. Cisco’s latest release of Secure Firewall operating system, Secure Firewall Threat Defence Version 7.3, addresses key concerns for today’s firewall customers. allows for the fingerprinting of traffic that is using the QUIC Protocol in Secure Firewall 7.3. Reduced TCO.

Firewall 145
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New Security Vulnerabilities Uncovered in pfSense Firewall Software - Patch Now

The Hacker News

Multiple security vulnerabilities have been discovered in the open-source Netgate pfSense firewall solution called pfSense that could be chained by an attacker to execute arbitrary commands on susceptible appliances.

Firewall 144
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Malware Hidden in Call of Duty Cheating Software

Schneier on Security

“Guides for cheats will typically ask users to disable or uninstall antivirus software and host firewalls, disable kernel code signing, etc.” . “It is common practice when configuring a cheat program to run it the with the highest system privileges,” the report notes. ” Detailed report.

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