What Are The Different Types Of Firewall?

What Are The Different Types Of Firewall?

Enterprise Networking Mag | Wednesday, May 04, 2022

A firewall in a computer is used to protect information by detecting and blocking all unauthorized access attempts.

FREMONT, CA: A firewall is a piece of hardware or software used to protect a private computer or a network of computers. This security is achieved through software, hardware, or both to allow only authorized traffic and prevent unauthorized users from accessing private computers and networks.

A computer firewall is a type of cybersecurity tool. A firewall in a computer is used to protect information by detecting and blocking all unauthorized access attempts. Before proceeding, a beginner must understand the fundamentals of a firewall and how a firewall works. A router in your home is a simple example to answer the question, "What is a Firewall?"

Various Types of Firewalls can be Installed Based on the Users' Needs.

Proxy Firewall: One of this Firewall's features is that it prevents direct connections to a computer from outside networks. This Firewall serves as a gateway from one network to another for specific applications.

Packet Filtering Firewalls: This type of Firewall application is used to create a barrier at the router. The Firewall's operation is limited to checking the source and destination IP addresses without delving into packet details.

Circuit level Gateways: This simple Firewall configuration works by examining the TCP handshake to ensure that the packet is coming from a legitimate source.

Stateful Inspection Firewalls: This Firewall combines the two methods mentioned above to create a more secure configuration.

Next-Generation Firewalls (NGFW): These NGFW types have many high-end capabilities and provide top-tier Firewall benefits to large organizations with a higher risk profile.

Software Firewalls: A software firewall is defined as software installed on a device without using any additional hardware.

Hardware Firewalls: Hardware Firewalls are devices that serve as the first line of defense, filtering data packets before they reach servers. The main disadvantages of hardware-based firewalls are that insider attacks easily bypass them and that the hardware capabilities vary depending on the supplier.

These are some of the types of firewalls. The appropriate type must be selected after careful consideration of all factors, including vulnerabilities.

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