Network security is commonly understood as a set of policies and measures that are used to ensure the operability and fault tolerance of an enterprise’s network infrastructure. Another important function is to protect the network from intruders and unauthorized access to data. Network infrastructure of any scale involves the use of hardware and software solutions to implement network security policies and measures.
There are several important principles of creating a network security:
- Network protection and redundancy of critical equipment. Protection tools usually include both software and hardware solutions, such as antivirus programs and firewalls. Equipment must be fault-tolerant, so reserves are allocated for critical elements and nodes.
- Regular monitoring of the network and traffic channels. Network infrastructure is monitored to detect vulnerabilities and collect detailed information about the operation of each piece of equipment integrated into the network. Network traffic is monitored to detect malicious activities and to balance the load on network nodes and components.
- Organization of parallel infrastructure operation. Network segments must ensure high availability of the infrastructure even in case of accidents, cyberattacks and natural disasters. For this purpose, large companies create parallel infrastructure that duplicates the work of the main infrastructure and is activated in case of incidents in the main system.