#Mac address vendor lookup wireshark mac#
' Returns the MAC address of the first IP enabled network adapter having a gateway. ' Retrieves the MAC address of the local computer as a byte array.
Now, from the list of retrieved MAC addresses, we can filter that one that most likely is the computer's MAC address on the network as it will belong to the NIC having: If LBound(Octets) = 0 And UBound(Octets) = OctetCount - 1 Then If CBool(Len(Replace(CStr(Octets()), vbNullChar, vbNullString))) Then ' IsMacAddress(MacAddressNeutral()) -> False ' IsMacAddress(MacAddressRandom()) -> True ' Returns True if the passed byte array can hold a MAC address, and To verify if a MAC address only holds zero octets (often labeled as the neutral MAC address), a simple function, IsMacAddress, is used: ' Enum for array to hold NIC information. To avoid incomprehensible code, enums are heavily used. Formatting (to a human-readable string) is first done when an address is displayed. This method is used throughout the functions as a convenient method that doesn't require a specific format. You will notice, that the retrieved information of the NICs is collected and returned in an array where the first item, the MAC address, is yet an array - an array of octets. Nics(Index, IpNicInformation.ipNicDescription) = "N/A" Nics(Index, IpNicInformation.ipNicIpAddress) = "" Nics(Index, IpNicInformation.ipNicHasDefaultIpGateway) = False Nics(Index, IpNicInformation.ipNicIpEnabled) = False Nics(Index, IpNicInformation.ipNicMacAddress) = Octets() ' No adapter having a MAC address was found. Nics(Index, IpNicInformation.ipNicDescription) = Adapter.Description Nics(Index, IpNicInformation.ipNicIpAddress) = Adapter.IPAddress(0) Nics(Index, IpNicInformation.ipNicHasDefaultIpGateway) = Not IsNull(Adapter.DefaultIPGateway)
Nics(Index, IpNicInformation.ipNicIpEnabled) = Adapter.IPEnabled Nics(Index, IpNicInformation.ipNicMacAddress) = MacAddressParse(Adapter.MacAddress) ' Loop the network adapters to fill the array. ReDim Nics(0 To AdapterCount - 1, IpNicInformation. NIC has been assigned a default IP gateway ' Retrieve the list of network adapters having a MAC address. PathName = "winmgmts:" & "!\\" & Computer & NameSpace ' Query to list IP enabled network adapters.Ĭonst Sql As String = "Select * From Win32_NetworkAdapterConfiguration Where MACAddress Is Not Null" ' Namespace to access the Win32_NetworkAdapterConfiguration class.Ĭonst NameSpace As String = "\root\cimv2" Public Function GetMacAddresses() As Variant() The NIC has been assigned a default IP gateway
' Retrieves from the local computer an array of the NICs having a MAC address. Thus, the first step is to retrieve the list of MAC addresses of the interface cards, and the function GetMacAddresses does that: Also, if the computer hosts virtual machines, at least one virtual network card exists in addition to the physical network cards. The reason is that a computer may have several other interfaces than the network card (NIC) that connects it to the LAN, be it wired or wireless. This is a typical task that should be simple but surprisingly is not. Note: Here we will deal with IPv4 MAC addresses only.
If that's what you are looking for, a good place to start is here: However, a guide to MAC addresses is outside the scope of this article. The MAC address is the unique identifier of every piece of hardware connected to a network.
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