He could he use a web server to help in identifying the os that is being use to record and examine the communication between the web server and the internet using a programme like Wireshark or Fiddler.
What is nmap?An open-source network discovery tool is called Nmap. Gordon Lyon created the network scanning and security auditing tool known as Network Mapper. Network administrators use it to find out which devices are now using the system and what port they are connected to.Network inventory, service upgrade schedules, host monitoring, and service uptime are all managed by numerous systems and network managers.Nmap is described as a tool that a network administrator can use in their networked system to discover or diagnose services that are operating on an Internet-connected system in order to spot potential security problems. It is utilised to automate duplicate operations, like service monitoringTo learn more about nmap refer to:
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