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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.

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How to Block a Program in a Firewall (Windows & Mac)

eSecurity Planet

Blocking a program in a firewall is a security measure that protects systems from unwanted access. This process monitors resource consumption, limits internet access, blocks inbound access from malicious sources, and prevents outbound access from installed apps. Block it if it’s not confirmed or if you’re not sure of its legitimacy.

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Over 178,000 SonicWall next-generation firewalls (NGFW) online exposed to hack

Security Affairs

Researchers from Bishop Fox found over 178,000 SonicWall next-generation firewalls (NGFW) publicly exploitable. Researchers from Bishop Fox used BinaryEdge source data to find SonicWall firewalls with management interfaces exposed to the internet. ” reads the advisory published by Bishop Fox.

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Zyxel 0day Affects its Firewall Products, Too

Krebs on Security

Today, Zyxel acknowledged the same flaw is present in many of its firewall products. “We’ve now completed the investigation of all Zyxel products and found that firewall products running specific firmware versions are also vulnerable,” Zyxel wrote in an email to KrebsOnSecurity. Patch 0 through ZLD V4.35

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Nearly 12,000 Juniper Firewalls Found Vulnerable to Recently Disclosed RCE Vulnerability

The Hacker News

New research has found that close to 12,000 internet-exposed Juniper firewall devices are vulnerable to a recently disclosed remote code execution flaw.

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Safer Internet Day, or why Brad Pitt needed an internet bodyguard

Malwarebytes

February 6, 2024 is Safer Internet Day. When I was asked to write about the topic, I misunderstood the question and heard: “can you cover save the internet” and we all agreed that it might be too late for that. The internet has been around for quite some time now, and most of us wouldn’t know what to do without it.

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VulnRecap 1/16/24 – Major Firewall Issues Persist

eSecurity Planet

Keep an eye out for security announcements from your firewall vendors; it’s possible additional similar vulnerabilities will come to light. The problem: Juniper Networks released a bulletin about a remote code execution vulnerability in its SRX firewalls and EX switches. This vulnerability is tracked as CVE-2024-21591.

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