get remote mac address using c#

[sherry]

How do I get remote mac address using c#, does anybody know the code for this?

[jak0bk]

Simple Answer: You can't.

Complex answer: You can, but you need to read the output from "arp -a" command. That might get difficult, depending on how many connections you currently have through your NIC (wireless or wired).

[azcodemonkey]

  jak0bk said:

Simple Answer: You can't.

Complex answer: You can, but you need to read the output from "arp -a" command. That might get difficult, depending on how many connections you currently have through your NIC (wireless or wired).

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Simpler answer: yes, you can.

You can use WMI to query a remote computer for its MAC.

https://www.neowin.net/forum/index.php?showtopic=342321&st=0

[nonsence]

shouldn't you just be able to use the arp protocol itself to broadcast out an arp reply for getting a mac address from an ip address? i mean, that's what the protocol is there for. also there is r-arp. which gets you the ip address from the mac address.

and i'm nto talking about specific programs that come with an os. i mean the actual protocol that is part of the tcp/ip suite. you should read up on network level programming for this. i know of it, but dont know how to do it myself so i can't help you more then just to point you in the general direction....

[azcodemonkey]

  nonsence said:

shouldn't you just be able to use the arp protocol itself to broadcast out an arp reply for getting a mac address from an ip address? i mean, that's what the protocol is there for. also there is r-arp. which gets you the ip address from the mac address.

and i'm nto talking about specific programs that come with an os. i mean the actual protocol that is part of the tcp/ip suite. you should read up on network level programming for this. i know of it, but dont know how to do it myself so i can't help you more then just to point you in the general direction....

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Yes, you can do it that way, however, what if you want to store only the MAC someplace? If you shell out, you redirect the entire output to a file. With WMI, you can be more selective.

[jak0bk]

That is only if you have a login on that computer. WMI requires admin privileges to run any sort of WMI query on a computer, regardless of the scope that you are querying.

I could be wrong. If so, correct me.

[nonsence]

WMI is supposed to be what Microsofts answer to SNMP is. and yes you do need certain priviledges to get information. and i think it will only work for Windows based systems that run the WMI services, which aren't installed by default.

i think if you wanna do this right, you should stick to the tcp/ip standards and figure out how to use to arp protocol to quiry remote systems. I know of packet sniffers that can do this, and programs that build a list of computers on the network, and list their info based on ip, dns/netbios and mac addess. but i dont know the programming behind how they do it.

[azcodemonkey]

  nonsence said:

WMI is supposed to be what Microsofts answer to SNMP is. and yes you do need certain priviledges to get information. and i think it will only work for Windows based systems that run the WMI services, which aren't installed by default.

i think if you wanna do this right, you should stick to the tcp/ip standards and figure out how to use to arp protocol to quiry remote systems. I know of packet sniffers that can do this, and programs that build a list of computers on the network, and list their info based on ip, dns/netbios and mac addess. but i dont know the programming behind how they do it.

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I'm pretty sure WMI is installed by default starting with 2000. It's a simple way. But, yeah, using TCP/IP would be better for a mixed environment.

Here: http://www.c-sharpcorner.com/Code/2003/Jun...cketSniffer.asp

[sherry]

  weenur said:

I'm pretty sure WMI is installed by default starting with 2000. It's a simple way. But, yeah, using TCP/IP would be better for a mixed environment.

Here: http://www.c-sharpcorner.com/Code/2003/Jun...cketSniffer.asp

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Thanks guys for all your help, but I'm looking for the c# code to get a remote mac address without using WMI.

Anyone any ideas?

[azcodemonkey]

Hey, sherry.

I should have pointed out that the link I posted was a link to a C# wrapper for a lib for WinPCap, a very nice packet sniffing tool. The library has a good amount of the protocols used with TCP/IP, including ARP.