võrgutuvastus

Võrgutuvastus, also known as network intrusion detection, is a security process that involves monitoring computer networks for malicious activity or policy violations. The primary goal is to identify and alert network administrators about potential security breaches, unauthorized access attempts, or suspicious behavior that could indicate an intrusion.

There are two main approaches to võrgutuvastus: signature-based detection and anomaly-based detection. Signature-based systems rely on a database of known attack patterns or "signatures." When traffic matches a known signature, an alert is triggered. Anomaly-based systems, on the other hand, establish a baseline of normal network behavior and flag any deviations from this baseline as potentially malicious. This can be effective against novel attacks for which no signatures yet exist.

Võrgutuvastus systems can be further categorized into network-based intrusion detection systems (NIDS) and host-based intrusion detection systems (HIDS). NIDS monitor network traffic at strategic points, examining packets for signs of intrusion. HIDS are installed on individual hosts and monitor system logs, file integrity, and other host-specific activities for suspicious events.

The data collected by võrgutuvastus systems is crucial for incident response. Alerts generated by these systems allow security teams to investigate potential threats, mitigate damage, and implement corrective measures to prevent future occurrences. Effective võrgutuvastus is a vital component of a comprehensive cybersecurity strategy for organizations of all sizes.