developer-roadmap/content/roadmaps/102-devops/content/104-setting-up-x/104-firewall.md

# Firewall

Firewall is a **network security device** that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies. It is a barrier that sits between a private internal network and the public Internet. A firewall’s main purpose is to allow non-threatening traffic in and to keep dangerous traffic out.

<ResourceGroupTitle>Free Content</ResourceGroupTitle>
<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.checkpoint.com/cyber-hub/network-security/what-is-firewall/'>What is Firewall?</BadgeLink>
<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.cisco.com/c/en_in/products/security/firewalls/what-is-a-firewall.html'>Types of Firewall</BadgeLink>
Add firewall content 2 years ago			`# Firewall`

			`Firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies. It is a barrier that sits between a private internal network and the public Internet. A firewall’s main purpose is to allow non-threatening traffic in and to keep dangerous traffic out.`

			`<ResourceGroupTitle>Free Content</ResourceGroupTitle>`
			`<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.checkpoint.com/cyber-hub/network-security/what-is-firewall/'>What is Firewall?</BadgeLink>`
			`<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.cisco.com/c/en_in/products/security/firewalls/what-is-a-firewall.html'>Types of Firewall</BadgeLink>`