Active Network Scanner
Active network scanners are a type of network scanner used to find active devices on a network. An active network scanner allows a user to discover devices on their own local area network, as well as other networks in the area. This allows administrators to gain access to devices that are not always visible, such as wireless access points, wireless routers, and hosts with a non-routable IP address.
The active network scanner is a tool that assists network and security administrators in performing a network audit. The active network scanner is most commonly used to identify IP addresses, MAC addresses, open ports, and the operating system of a device. This information allows administrators to ensure proper network maintenance and security.
Most active network scanners are available as either desktop applications or web-based platforms. A desktop application will run directly on a local system while a web-based platform can be accessed from any computer with an internet connection.
Active network scanners use different protocols and ports to interact with a target device. By default, most scanners will use TCP port 80 (HTTP), TCP port 21 (FTP), and UDP port 53 (DNS). Administrators can also enable additional protocols and ports to find other active devices.
Once an active network scanner has been configured, administrators can begin discovering devices on their network. It is usually best to start with the local network, as this will yield the most detailed results. Depending on the type of device being scanned, the scanner may attempt to extract additional information such as session keys, encryption keys, and firmware versions.
The active network scanner can also be used to detect network vulnerabilities. Some scanners have the ability to search for known vulnerabilities in target devices. Once these vulnerabilities are found, technicians will be notified, and they can begin to patch them on their own or contact the vendor for patches.
The active network scanner can also be used to investigate suspicious activities on the network. By using active scanning, an administrator can look for strange port configurations or unusual IP addresses that may be an indicator of malicious intent. In addition, active network scanners can provide detailed descriptions of the protocols and services running on a device, which can be used to identify whether the device is being used for nefarious purposes.
Overall, active network scanners are an invaluable tool for administrators and security professionals. They provide detailed information about devices on the network and allow administrators to detect suspicious activity. By taking advantage of this tool, administrators can keep their networks safe from attackers and security threats.
