Как узнать MAC-адрес

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Chris (2003-05-25 18:32) [0]

Как узнать MAC-адрес другой машины, зная ее IP-адрес?

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Verg (2003-05-26 13:21) [1]

В Win2K это можно сделать функцией SendArp:
function SendARP(DestIP, SrcIP : TIpAddr; pMacAddr, PhyAddrLen :PULONG):DWORD; stdcall; {Parameters DestIP [in] Destination IP address. The ARP request attempts to obtain the physical address that corresponds to this IP address. SrcIP [in] IP address of the sender. This parameter is optional. The caller may specify zero for the parameter. pMacAddr [out] Pointer to an array of ULONG variables. The first six bytes of this array receive the physical address that corresponds to the IP address specified by DestIP. PhyAddrLen [in, out] On input, specifies the maximum buffer size the user has set aside at pMacAddr to receive the MAC address, in bytes. On output, specifies the number of bytes written to pMacAddr. Return Values If the function succeeds, the return value is NO_ERROR. If the function fails, use FormatMessage to obtain the message string for the returned error. } implementation function SendARP; external "IPHLPAPI.DLL" name "SendARP";

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