Sometimes it becomes necessary to determine which computer is connected to the network. It is enough to find out the IP address, and then you can find the user by finding out his location. If at the moment the computer implements connect or ping, then we can say with complete confidence that it is on the network.
Instructions
Step 1
Find out the user's IP address. Then go to www.ripe.net/fcgi-bin/whois and enter the IP address in the “search for” field. The computer will give information about which country this address belongs to. The message is issued in English. There are special programs that show the user's location and city on a geographic map. Similar programs can be found on the informative website www.geoiptool.com.
Step 2
Send an instant message to the user in the form of a pop-up window by typing the command “net send, IP-address, message” in FAR Manager. In this case, you will receive information about the provider, which has data on the actual location of the user. Please note that he will not provide this data without a special request.
Step 3
Use a special program on PHP online sniffer or http web sniffer (eng), which saves information about any user (IP address, time of visiting the page) in a special file on the server. To find out information about a user from any social network, chat, blog, forum, etc., enter the http web sniffer address on the network as a useful link. Everyone who clicks on it will become known to you. You will be able to find out the IP address of the visitor, the name of the provider (often even the name of the company), the address of the page from which the link was clicked, and the type of operating system. Alternatively, you can paste the link into an email and ask the user to click on it.
Step 4
Use the traceroute or ping utilities. With their help, you will determine the availability of a node, but not the availability of a specific service on it. Connect to any Internet site (search server, sites of large companies, etc.). When calling connection functions, define a programmatic response to various errors, thereby checking the availability of nodes and services.
