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Internet service providers do typically keep a detailed record of which dynamic IP address is assigned to which customer at any given time. However, in general they will only give out this information to law enforcement if they receive a court order, to protect privacy. As for MAC address, the ISP probably also knows the MAC address of the home router used ...


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The DHCP server logs will have a record of what MAC address was issued with what IP address in the past. I do this in my own corporate network to look for anomalies. But your question is about public IP addresses. The same principle applies, and this data is not public information: you'd have to get access to the logs of the networking devices. So, for the ...


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The only real reason to prevent a network from being routable through a firewall is to make sure it's isolated both from external and internal unauthorized access. It's impossible for someone to hack into a system if there is no physical path for electrons to travel from their position to the target system's position. By unplugging any cables linking the ...



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