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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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Top 12 Firewall Best Practices to Optimize Network Security

eSecurity Planet

Firewalls monitor and control incoming and outgoing traffic while also preventing unauthorized access. Examine the rationale behind present rules, considering previous security concerns and revisions. Overlapping rules may impair firewall efficiency or expose flaws that allow attackers to circumvent regulations.

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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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GUEST ESSAY: A roadmap to achieve a better balance of network security and performance

The Last Watchdog

Why do so many businesses struggle to balance network security and user experience? Even before COVID, enterprises saw huge increases in people working outside the traditional corporate firewall. Your network security simulations should do the same. Trends like: • More distributed users and applications.

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PAN-OS Firewall Vulnerability Under Active Exploitation – IoCs Released

The Hacker News

Palo Alto Networks has released new indicators of compromise (IoCs) a day after the network security vendor confirmed that a new zero-day vulnerability impacting its PAN-OS firewall management interface has been actively exploited in the wild.

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SonicWall Issues Urgent Patch for Critical Firewall Vulnerability (CVE-2024-40766)

Penetration Testing

SonicWall, a prominent network security provider, has released a security advisory warning users of a critical vulnerability (CVE-2024-40766) affecting their SonicOS operating system.

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Back to the Future of Firewall

Cisco Security

As a network and workload security strategy leader, I spend a lot of time thinking about the future of the good old network firewall. Spoiler alert: I’m not going to join the cool club of pronouncing the firewall dead. Insert Your Firewall Here. How this insertion happens is changing quite rapidly, though.

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