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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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Network Security Automation using Cisco Secure Firewall and Hashicorp’s Consul

Cisco Security

Let’s assume that an access rule configured on the Cisco Secure Firewall allows traffic from one service to another based on their IP addresses. It is effective as long as the setup does not change but if the destination node goes down or becomes inaccessible, another node will spin up in its place making the access rule ineffective.

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Cisco Secure Firewall named Best Next Generation Firewall in SE Labs 2021 Annual Report

Cisco Security

Cisco is proud to be the only vendor recognized by SE Labs as Best Next Generation Firewall (NGFW) in their 2021 Annual Report. We’re honored to receive industry recognition for excellence in the network firewall market and for making security less complex, more agile, and better able to defend against today’s and tomorrow’s threats.

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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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