A firewall is a network device which prevents unauthorized access from internet to private network. The Firewall filters the data packets which flow into your network through a public or private network. (Based on firewall configuration which we have implemented and configured by the network engineer). The devices which are connected to the internet, or a single PC, or domain network computers can be vulnerable if advance network security is not present/ implemented in the network
Types of firewall filtering mechanisms used for the networks:
- Packets is the Data which consist of important information. Firewall examines and filters packets which are harmful to the network and drops this kind of harmful packets from pass through the network.
- Firewall inspects and examines each data packets which are incoming or outgoing in the network depending on the configuration.
Next Generation Firewall (NGFW)
An NGFW is introduced for big enterprise and high-performance network security devices that give much better performance for the bigger networks through is features like Application control and SSL Decryption/inspection and advances content filtering
Intrusion prevention system is used in computer network security. It Creates policies and rules for network with the intrusion detection system and provides Alert system or network administrators to Harmful traffic, an IPS to a combination of IDS and an application layer firewall for protection.
Application controls system can control the data relating to each computer-based application system. It will provide the access- permit or denied as configured by the network administrator.
Stateful inspection is a firewall mechanism that monitors the active connections and uses information to determine which network packets should be allowed through the firewall. It’s also known as dynamic packet filtering.
About the Author
Shaik Parveez is a Technical Support Engineer dedicated to System and network administration working with our Enterprise Team. He has handled many Networking projects across Dubai.
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