What is firewall ? How it's work's? It's types. Use of firewall

 In today's article we are going to talk about "Firewall" like what is Firewall, how does it work and what are the types of Firewall?  No one can deny the fact that this dynamic rise of the Internet has brought the world closer, but at the same time, it has also left us with a variety of security threats.  To ensure the confidentiality and integrity of a network's valuable information from external attacks, we must have some robust mechanisms in place and this is how a "firewall" exists.

 Who does not want security in today's time, but when it comes to our computer and mobile, it becomes even more important because in today's time malicious activity- Virus, Trojans is made so much by hackers that if we use our security  If we give a little disturbance about it, hackers can hack our mobile or computer anytime and we will not even know about it.



 What is Firewall?

 Firewall software or firmware (firmware is programming that is written in nonvolatile memory of a hardware device) that implements a set of rules about which data packets are allowed to enter the network and which  Not to

 Firewall is incorporated into a variety of network devices to filter traffic and reduce the risk of malicious packets on the public internet affecting the security of the private network.  Firewalls can also be purchased as stand-alone software applications.

 Firewalls are tools that can be used to increase the security of computers connected to a network, such as a LAN or the Internet.

 How Firewalls work?

 Firewalls act like a filter between your computer / network and the Internet.  You can program what you want to get out and what you want to get, but nothing else will be allowed.  Firewalls can be used in many ways to add security to your home or business.

 How do firewalls protect Businesses?

 Large corporations often have very complex firewalls to protect their extensive networks. Firewalls can be configured to prevent employers from sending certain types of email or transmitting sensitive data outside the network.  Such as social networking sites) can be programmed to prevent access. There is no limit to the various types of configurations when using firewalls.  Comprehensive configurations are usually handled and maintained by highly trained IT specialists.

 Firewall required for personal use

 For home use, firewalls work very easily. The main goal of a personal firewall is to protect your personal computer and private network from malicious damage. Malware, malicious software, is the primary threat to your home computer.  A virus can be transmitted to your computer via email or the Internet and can cause a lot of damage to your files.  Other malware includes Trojan horse programs and spyware. These malicious programs are usually designed to get your personal information for some kind of identity theft purposes.

  Types of Firewall

 There are three types of firewalls that are used by companies to protect their data and equipment to keep destructive elements out of the network.  Packet Filters, Stateful Inspection and Proxy Server Firewalls.  Let us give you a brief introduction about each of these.

 1.Packet Filters

 Packet Filter Firewall is used to control network access by monitoring outgoing and incoming packets and passing or halt them based on IP addresses, protocols and ports.

 Packet filtering technology is suitable for small networks but becomes complex when applied to large networks.  It should be noted that these types of firewalls cannot prevent all types of attacks.  They can neither deal with attacks that use application layers vulnerabilities nor fight against spoofing attacks.

 2.Stateful inspection

 Stateful Packet Inspection, sometimes called dynamic packet filtering, is a powerful firewall architecture that checks end to end traffic streams.  These smart and fast firewalls use an intelligent way to shut down unauthorized traffic by analyzing packet headers and inspecting the status of packets along with providing proxy services.  These firewalls operate on the network layer in the OSI model and are more secure than basic packet filtering firewalls.

 3.Proxy Server Firewalls

 Also called application level gateways, Proxy Server Firewalls are the most secure type of firewalls that effectively protect network resources by filtering messages at the application layer.

 Proxy firewalls mask your IP address and limit traffic types.  They provide a complete and protocol-aware security analysis for the protocols they support.  The proxy server provides the best Internet experience and improves network performance.

 It is all about basic firewalls that are configured to protect the private network.  No matter which firewall you choose, make sure to have a proper configuration as any flaws can cause more damage to you than a firewall.  Create a secure network and deploy a suitable firewall to limit access to your computer and network.