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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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Firewall Rule Bloat: The Problem and How AI can Solve it

Security Boulevard

Long lists of firewall rules can lead to misaligned and inconsistent policies, creating gaps in your security perimeter for threat actors to exploit. The post Firewall Rule Bloat: The Problem and How AI can Solve it appeared first on Security Boulevard.

Firewall 116
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Simplify Network Security with Cisco Secure Firewall-as-a-service (FWaaS) on AWS

Cisco Security

With traditional firewalls, network security teams are charged with the heavy lifting of deploying new solutions. To become more agile, organizations are increasingly moving towards deploying SaaS-based security offerings hosted directly by vendors. What does this mean for Cisco Secure Firewall customers?

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Can Your Firewall Be Hacked? Severe Flaws Found in pfSense

Penetration Testing

Security researcher Navy Titanium have released a technical deep-dive uncovering three severe vulnerabilities affecting pfSense, the popular open-source The post Can Your Firewall Be Hacked? Severe Flaws Found in pfSense appeared first on Daily CyberSecurity.

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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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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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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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