What is the role of network firewall

In general, the goal of information security is to ensure confidentiality and integrity, and the industrial network can only be put into operation after multiple encryptions. So what is the role of the network industrial firewall ?


1. Strong pertinence

A firewall is software or hardware that restricts access between systems or networks according to specific security policies. Network segment division and virtual local area network can make the division of security domains more detailed, so as to better deploy firewalls.



2. Safety

The firewall acts as a gatekeeper between different security domains. The function of the firewall is to isolate different security domains, monitor the communication data of the network, and provide a trusted path for legitimate users and legitimate devices only when the relevant rules are effectively configured. channel of letter.



3. All-round protection

Firewalls include two categories: host firewalls and network firewalls. The main form of host firewall is multi-homed host, which is only suitable for terminal equipment, not suitable for digital workshop industrial control network. Therefore, the network firewall is mainly used in the industrial control network for the digital workshop, and it is the network firewall used in the industrial field.





like:


What is a firewall? what's the effect?

What is the main function of a firewall


What are the advantages and benefits of using a firewall



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