-
1. What Is a Firewall? - Cisco
Link: https://www.cisco.com/c/en/us/products/security/firewalls/what-is-a-firewall.html
Description: WebA firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. Firewalls have been a first line of defense in network security for over 25 years.
-
2. What Is a Firewall? Definition and Types of Firewall | Fortinet
Link: https://www.fortinet.com/resources/cyberglossary/firewall
Description: WebA firewall in a computer network provides security at the perimeter by monitoring incoming and outgoing data packets in network traffic for malware and anomalies. A firewall filters traffic as it attempts to enter and exit your network as opposed to antivirus software that scans devices and storage systems on the network for threats that have ...
-
3. Firewall & network protection in Windows Security - Microsoft …
Link: https://support.microsoft.com/en-us/windows/firewall-network-protection-in-windows-security-aef9838b-d081-fd75-3b1b-e5fa794c003b
Description: WebFirewall & network protection in Windows Security lets you view the status of Microsoft Defender Firewall and see what networks your device is connected to. You can turn Microsoft Defender Firewall on or off and access advanced Microsoft Defender Firewall options for the following network types:
-
4. What is a firewall? | Network firewalls | Cloudflare
Link: https://www.cloudflare.com/learning/security/what-is-a-firewall/
Description: WebWhat is a firewall? A firewall is a security system that monitors and controls network traffic based on a set of security rules. Firewalls usually sit between a trusted network and an untrusted network; oftentimes the untrusted network is the Internet. For example, office networks often use a firewall to protect their network from online threats.
-
5. What Is a Firewall? (Definition, Types, Examples) | Built In
Link: https://builtin.com/articles/firewall
Description: WebMar 28, 2023 · A firewall is a network security device that monitors and controls incoming and outgoing traffic from a computer network. By allowing only authorized traffic and blocking unwanted traffic, firewalls protect against unauthorized access, malware and other security threats.
-
6. What Is a Network Firewall? - Palo Alto Networks
Link: https://www.paloaltonetworks.com/cyberpedia/what-is-a-network-firewall
Description: WebA network firewall is a security device that filters traffic between a trusted internal network and untrusted external networks. Network firewalls operate by inspecting incoming and outgoing data packets against a set of security rules and permitting or denying passage.
-
7. What Does a Firewall Do? | Fortinet
Link: https://www.fortinet.com/resources/cyberglossary/what-does-a-firewall-do
Description: WebA firewall is a security system designed to prevent unauthorized access into or out of a computer network. Firewalls are often used to make sure internet users without access are not able to interface with private networks, or intranets, connected to the internet.
-
8. What is a Firewall? | Firewall Definition - Palo Alto Networks
Link: https://www.paloaltonetworks.com/cyberpedia/what-is-a-firewall
Description: WebA firewall is a network security solution that regulates traffic based on specific security rules. It scrutinizes data packets, deciding whether to allow, block, or drop them based on established criteria. The primary purpose is to protect network devices by monitoring traffic flow and blocking potential threats.
-
9. How Does a Firewall Work? | Fortinet
Link: https://www.fortinet.com/resources/cyberglossary/how-does-a-firewall-work
Description: WebA firewall is either a hardware device or a software application that helps protect your network from attackers. The firewall shields your network by acting as a 24/7 filter, scanning the data that attempts to enter your network and preventing anything that looks suspicious from getting through.
-
10. What Is Network Security? - Cisco
Link: https://www.cisco.com/c/en/us/products/security/what-is-network-security.html
Description: WebA firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. Cisco offers both threat-focused firewalls and unified threat management (UTM) devices. Explore Cisco Secure Firewall. Intrusion prevention systems.
