Firewall and Its Important Characteristics for network security management
The firewall is one of the most effective and important tools for implementing the network immunity and is able to adequately prevent unauthorized access to internal resources from the outside world. A firewall is a system or combination of several tools that imposes a series of restrictions between internal and external networks such as the internet. There are lots of companies using strong firewall to get the best Network Security Management.
Because all traffic passes through the firewall, the firewall is a good place to record activities. As the only access point, the firewall can record what happens between the internal network and the internet. By categorizing this information, good results can be obtained in connection with the use of the network.
What is a firewall?
Firewall is software or hardware that prevents unauthorized access to a person’s computer on a network or the internet and controls incoming and outgoing data. In fact, firewall work is very similar to your office those who are allowed to enter can enter the office, and unlike those who are not allowed to enter the office, they cannot enter.
Firewall filters data and communications as a Security layer. Firewall is one of the most important layers of security in computer networks, and not using it causes hackers and malicious people to enter the network without any restrictions and do their job. Therefore, the existence of a firewall is absolutely necessary for all users who are connected to a network.
Learn more “Firewall & Security Management.“
Important Characteristics of Firewall
The important characteristics of a strong and suitable firewall to create a secure network are:
Recording and Warning Ability
Recording events is one of the most important features of a firewall and it allows network administrators to control the execution of attacks. The network administrator can also use the information recorded to control the traffic generated by authorized users. Also, in addition to recording events, a good firewall should be able to notify the network administrator of incidents and alert him in critical situations.
Visit High Volume of Information Packages
One of the efficiency tests of a firewall is its ability to visit large volumes of information packages without significantly reducing Network performance. The amount of data that a firewall can control varies for different networks, but a firewall should definitely not become a bottleneck for the network under its protection.
Easy to Configure
Simplicity of configuration includes the ability to quickly launch the firewall and quickly see errors and problems. In fact, many of the security issues that plague networks are due to the wrong configuration of the firewall. Therefore, quick and easy configuration of a firewall reduces the possibility of errors.
Security and Redundancy
Firewall security itself is one of the most important things in a secure network. A firewall that fails to secure itself will definitely allow hackers and attackers to enter other parts of the network.
Packet filtering
These filters are much smarter than simple filters. They block almost all incoming traffic. These filters are the main mechanism used to implement firewalls in modern networks and can track different information through the packets that are passing and can detect application layer protocols such as FTP and HTTP.
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