Network Security Monitoring is a set, analysis, and reporting of signals and alerts on computer networks to detect, analyze, and then respond appropriately to attacks on networked computers. Common network security monitoring tools have various features including:
A variety of malware, spyware, and adware programs are designed to exploit a computer network for their own objectives. Because these malicious programs target common web-based applications (such as chat, email, and instant messaging), network security monitoring is often implemented through processes that require administrator approval, such as intrusion detection, signature matching, or updates. Changes in the state of any file, application, or service can be instantly relayed to an administrator through a network monitoring tool. In order to determine if a file has changed state, network administrators typically log on to their workstations and execute the appropriate commands. Network administrators may also manually key in IP addresses, ports, or domain names to prevent or detect unauthorized access.
Network intrusion detection helps network security monitoring administrators detect any intentional or unintentional intrusion attempts before they result in serious damage. Intrusion detection systems typically employ intrusion detection technology that employs active and passive methods. Some intruders utilize spoofing and proxy servers to conceal their presence. Active detection detects and monitors all attempts to penetrate the firewall, as well as unauthorized access attempts by intruders to system files, folders, and other network resources.
Another benefit of network security monitoring is monitoring of network performance. Network monitoring tools measure response time, bandwidth usage, server response time, and packet data rates. The results of network monitoring can provide an accurate picture of network performance and identify areas of improvement. For example, if network monitoring tools show that network traffic is dominated by unusually long outgoing packets, this could indicate excessive resource use by server applications. However, if bandwidth usage trends show a decrease from past months, this could indicate improved network performance.
Some tools can automatically detect and report intrusion attempts, malicious attacks, and other vulnerabilities detected within the network. Other indicators can provide alerts when attacks occur, letting administrators quickly respond and stop the threat before it can escalate. Some notifications sent by network security monitoring systems are multimedia alarms, which play audio and video files that are pertinent to the attack. These multimedia alarms can notify employees of an upcoming threat, provide information about what caused the threat, and provide instructions on how to respond. In addition, some indicators can generate text notifications to desktop, mobile phone, or email users when vulnerabilities are detected. Check out also the advanced persistent threat.
A network security monitoring tool can be used to perform a number of actions to detect, warn, or notify administrators of intrusions. These tools are designed to perform a variety of actions, including the detection of unauthorized access, malicious attacks, and other vulnerabilities. Some allow administrators to determine which networks or files may be available for malicious or illicit use, while others allow detection and reporting of specific indications. Regardless of the network security monitoring tool used, the primary objective is to prevent penetration and further harm. Ensuring that every network has effective security safeguards in place is one of the most important objectives for businesses.