To accomplish all of the following, you'll need administrator rights. Call the startup window programs by a combination Win+R or select Run from the menu "start". Enter the command cmd.
In the command window write ping or ping IP_comp name_comp where IP_comp and name_comp – IP address or network name of another computer. After an exchange of packages, enter the command arp – a. In the line "Physical address" displays the MAC address of the network card you are interested in computer. Arp is a Protocol for determining the MAC address for a given IPaddress. A preliminary exchange of packets is required because the arp utility retrieves information about the network node from the cache.
There is another way. In a command prompt enter nbtstat –a or nbtstat name_comp –A IP_comp. This command displays table names NetBIOS remote computer.. In the line "Address Board" command returns the network ID of the network node.
To receive information about the ID of the network card of the computer, located in any segment of the network using the Windows utility getmac. Write in command line getmac /s IP_comp. The system will probably require you to enter a password the network administrator. If the password you don't know what "punch" the ID of the computer from a different segment you will not succeed.
To obtain information about the remote computer, you can use third party programs – for example, free network scanner LanSpy. You can download it on the developer's site http://lantricks.ru/lanspy/
The program displays the domain name of the computer, MAC address, information about connected users, security settings, open files and ports and many other useful information. However, if you try to scan with it using the office network, the administrator may not approve your initiative.