Hi,
Does anyone know how to get the MAC address from the users
NIC card?
It's not part of the environment variables, is it?
Thanks,
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Hi,
Does anyone know how to get the MAC address from the users
NIC card?
It's not part of the environment variables, is it?
Thanks,
Here is how you can get MAC address for NIC card .But this code should be executed on the computer where the card is installed.
Code:Private Const NCBASTAT As Long = &H33
Private Const NCBNAMSZ As Long = 16
Private Const HEAP_ZERO_MEMORY As Long = &H8
Private Const HEAP_GENERATE_EXCEPTIONS As Long = &H4
Private Const NCBRESET As Long = &H32
Private Type NET_CONTROL_BLOCK
ncb_command As Byte
ncb_retcode As Byte
ncb_lsn As Byte
ncb_num As Byte
ncb_buffer As Long
ncb_length As Integer
ncb_callname As String * NCBNAMSZ
ncb_name As String * NCBNAMSZ
ncb_rto As Byte
ncb_sto As Byte
ncb_post As Long
ncb_lana_num As Byte
ncb_cmd_cplt As Byte
ncb_reserve(9) As Byte
ncb_event As Long
End Type
Private Type ADAPTER_STATUS
adapter_address(5) As Byte
rev_major As Byte
reserved0 As Byte
adapter_type As Byte
rev_minor As Byte
duration As Integer
frmr_recv As Integer
frmr_xmit As Integer
iframe_recv_err As Integer
xmit_aborts As Integer
xmit_success As Long
recv_success As Long
iframe_xmit_err As Integer
recv_buff_unavail As Integer
t1_timeouts As Integer
ti_timeouts As Integer
Reserved1 As Long
free_ncbs As Integer
max_cfg_ncbs As Integer
max_ncbs As Integer
xmit_buf_unavail As Integer
max_dgram_size As Integer
pending_sess As Integer
max_cfg_sess As Integer
max_sess As Integer
max_sess_pkt_size As Integer
name_count As Integer
End Type
Private Type NAME_BUFFER
name As String * NCBNAMSZ
name_num As Integer
name_flags As Integer
End Type
Private Type ASTAT
adapt As ADAPTER_STATUS
NameBuff(30) As NAME_BUFFER
End Type
Private Declare Function Netbios Lib "netapi32.dll" (pncb As NET_CONTROL_BLOCK) As Byte
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Private Declare Function GetProcessHeap Lib "kernel32" () As Long
Private Declare Function HeapAlloc Lib "kernel32" (ByVal hHeap As Long, ByVal dwFlags As Long, ByVal dwBytes As Long) As Long
Private Declare Function HeapFree Lib "kernel32" (ByVal hHeap As Long, ByVal dwFlags As Long, lpMem As Any) As Long
Private Function GetAddressMAC() As String
Dim strBuffer As String
Dim lngASTAT As Long
Dim NCB As NET_CONTROL_BLOCK
Dim AST As ASTAT
NCB.ncb_command = NCBRESET
Call Netbios(NCB)
NCB.ncb_callname = "* "
NCB.ncb_command = NCBASTAT
NCB.ncb_lana_num = 0
NCB.ncb_length = Len(AST)
lngASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS _
Or HEAP_ZERO_MEMORY, NCB.ncb_length)
If lngASTAT = 0 Then
MsgBox "memory allocation failed!"
Exit Function
End If
NCB.ncb_buffer = lngASTAT
Call Netbios(NCB)
CopyMemory AST, NCB.ncb_buffer, Len(AST)
strBuffer = Format(Hex(AST.adapt.adapter_address(0)), "00") & " " & _
Format(Hex(AST.adapt.adapter_address(1)), "00") & " " & _
Format(Hex(AST.adapt.adapter_address(2)), "00") & " " & _
Format(Hex(AST.adapt.adapter_address(3)), "00") & " " & _
Format(Hex(AST.adapt.adapter_address(4)), "00") & " " & _
Format(Hex(AST.adapt.adapter_address(5)), "00")
HeapFree GetProcessHeap(), 0, lngASTAT
GetAddressMAC = strBuffer
End Function
Wow Serge, Thanks!!
Suppose a user came to my website, is it possible
to grab the MAC address that way?
Thanks,
CG
Since you can't use APIs with VBScript, you probably would have to create an ActiveX control which will have this code
and then use this control on your ASP page. I'm already
doing something similar on one of mine asp pages.
Basically, I stick control on the page, which will grab
some info from the client, then I refresh the page from the
client side scripting passing needed information as a query string.
Also, bare in mind that if you use ActiveX control on your page, then you have to be sure that all clients are using Internet Explorer
Regards,
Hi Serge,
This URL is for a website called Shields UP! A Internet Connection Security for Windows Users.
https://grc.com/x/ne.dll?bh0bkyd2
There is a button labeled "Test My Shields", if you click
that button, the next page will show you your IP address, your computer's name etc.
About half way down the page it will show you your MAC address on your NIC card. It doesn't download anything for
that to happen.
I think that would be a great feature to know how to use. Some of our app's where I work are going to be ASP delivered and I think that would be a great feature to build
into some of them.
Thanks,
CG
I've checked that site and it failed to determine my MAC address and computer name. All it did was idetified my IP address, which is really easy to do with ASP. Also, if you look at the address bar for that page you would notice that the url they use is
http://grc.com/x/ne.dll?rh1ck2l2
So apparently, they use DLL with functionality similar to what I've shown you. You still have to understand that they have to push their stuff (DLL) to your machine in order for them to do that, unless they use a Windows DLL of some kind.
Regards,
You're absolutely right about the DLL...
Anyway, Serge, thanks for your insight!
CG
I found the site mentioned above very interesting.