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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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News alert: Knocknoc raises seed funding to scale its just-in-time network access control technology

The Last Watchdog

19, 2025, CyberNewswire — Sydney-based cybersecurity software company Knocknoc has raised a seed round from US-based venture capital firm Decibel Partners with support from CoAct and SomethingReal. Sydney, Australia, Mar. The funding will support go-to-market, new staff, customer onboarding and product development.

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News alert: INE Security shares cyber hygiene guidance for small- and medium-sized businesses

The Last Watchdog

As small businesses increasingly depend on digital technologies to operate and grow, the risks associated with cyber threats also escalate. INE Security advises businesses to secure their network by using firewalls, encrypting data, and regularly updating security software. Cary, NC, Oct.

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Is your firewall stuck in the 80s?

Cisco Security

Modernize your firewall for greater security resilience. Cybersecurity has changed dramatically since the dawn of firewalls in the 1980s. Today’s workers, data, and applications are everywhere, and firewalls must be as well. So, can your firewall grow with you? The firewall is a critical foundation for security.

Firewall 145
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Palo Alto Networks fixed multiple DoS bugs in its firewalls

Security Affairs

Palo Alto Networks fixed several vulnerabilities in its PAN-OS operating system, including 3 issues that can trigger a DoS condition on its firewalls. Repeated attacks can eventually trigger a DoS condition by forcing the firewall into maintenance mode, requiring manual intervention to restore online functionality.

Firewall 136
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P2P Weakness Exposes Millions of IoT Devices

Krebs on Security

A peer-to-peer (P2P) communications technology built into millions of security cameras and other consumer electronics includes several critical security flaws that expose the devices to eavesdropping, credential theft and remote compromise, new research has found. A Webcam made by HiChip that includes the iLnkP2P software.

IoT 278
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NEW TECH: Alcide introduces a “microservices firewall” as a dynamic ‘IaaS’ market takes shape

The Last Watchdog

I recently sat down with Gadi Naor, CTO and co-founder of Alcide , to learn more about the “microservices firewall” this Tel Aviv-based security start-up is pioneering. Then on June 7, 2014, Google released Kubernetes – Greek for helmsman – to the open source software community. And we create a microservice-level perimeter around it.

Marketing 193