Network security tools perform two basic functions - detection and prevention.
Detection: Network security tools detect and identify security threats by monitoring network traffic and activity. This includes detecting spam, malware, viruses, and other types of cyber attacks. Detection tools use techniques such as signature-based detection, behavioral analysis, and anomaly detection to identify and alert security personnel to potential threats.
Prevention: Network security tools prevent security threats from entering or impacting the network in the first place. This includes blocking malware, viruses, and other types of cyber attacks as well as implementing access control policies to prevent unauthorized access to sensitive data. Prevention tools use techniques such as firewalls, intrusion prevention systems (IPS), and web filtering to block malicious traffic and protect the network from attack.
Overall, network security tools work together to create a multi-layered security approach that provides comprehensive protection from a variety of cyber threats. These tools are an essential part of any organization's security strategy as they can significantly reduce the risk of data breaches and other security incidents that can disrupt operations and damage a company's reputation.