A network firewall is a security tool within an organization that controls data that can enter or leave a network. A firewall checks the data at certain points based on specific rules and decides what to allow or block. It monitors and filters the data passing through a network to ensure proper safety and privacy.ย
In this article, we will discuss firewall networks in detail, including their types and benefits. Letโs have a look!
How Network Firewalls Work?
Network firewalls are placed at the entry and exit points of a network. They monitor and control incoming and outgoing traffic to keep a network secure. Firewalls work by checking the packet header and looking for details like data route. Moreover, advanced firewalls like the Next-Generation Firewalls use more strict protocols and check the packet headers more deeply. They also use more advanced tools and apps to improve network security.ย
The most advanced firewalls can even check encrypted data traffic for hidden threats. They use deep inspection methods to analyze the incoming and outgoing traffic and then decide which data packets should be allowed to pass.ย
Types of Network Firewalls
Letโs have a look at some important types of a network firewall:ย
Packet Filtering: This basic firewall checks the packet header, including an IP address, and follows the security rules to allow or block data.
Stateful Inspection: These firewalls track ongoing connections and block any data that does not fit the expected data pattern.ย
Proxy Services: Proxy firewalls hide a systemโs identity by making all traffic appear to come from the proxy.
NGFWs: Next-generation firewalls provide advanced protection with deep packet inspection and tools.ย
Benefits of Network Firewalls?
Here are some important benefits of using a network firewall:
Better Security
A firewall improves network security by checking the traffic or data that enters or leaves a network. It deeply checks the data packets for threats and ensures that the network is free from potential security risks. If a firewall finds something dangerous for the network, it immediately blocks it.ย
Traffic Control
A firewall also provides great control over network traffic. It monitors each incoming and outgoing data packet and decides what type of traffic is allowed on your network. This not only provides control over network traffic but also prevents unauthorized access.ย
Network Segmentation
Firewalls are also used to divide a companyโs network into smaller sections. This prevents hackers from moving freely across the network, limiting the spread of attacks.ย
Last Updated on by Icy Tales Team
