Question

我设法获得计算机中的所有NetworkInterface，然后我拒绝ipv6，环回，然后我最终有2个接口，一个是我想要使用的真正以太网，一个是我已经开放工作的VPN使用一些我不想使用的远程服务器。

C＃中是否有任何方法可以识别它们？两者都为AddressFamily回答“InterNetwork”，并且都为NetworkingInterfaceType说“Ethernet”

有任何线索吗？

{
"items": [{
    "id": 12345,
    "name": "cool name",
    "title": "title of the object",
    "vendor": "vendor name"
}

这些是我最终拥有的两个接口：

Answer 1

您可以找到连接到PCI总线的接口并从那里开始。这里有一些代码只返回PCI总线上的接口。

using System.Collections.Generic;
using System.Linq;
using System.Management; // Add a reference to System.Management for the project
using System.Net.NetworkInformation;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            HashSet<string> physicalMacAddresses = new HashSet<string>(GetMacAddressesOnPciBus());

            var ifaces = NetworkInterface.GetAllNetworkInterfaces();
            var physicalAddresses = ifaces
                .Where(x => x.NetworkInterfaceType == NetworkInterfaceType.Ethernet
                && physicalMacAddresses.Contains(x.GetPhysicalAddress().ToString().Trim('{').Trim('}')));

        }

        private static IEnumerable<string> GetMacAddressesOnPciBus()
        {
            ManagementObjectSearcher searcher = new ManagementObjectSearcher
    ("Select MACAddress,PNPDeviceID FROM Win32_NetworkAdapter WHERE MACAddress IS NOT NULL AND PNPDeviceID IS NOT NULL");
            ManagementObjectCollection mObject = searcher.Get();

            foreach (ManagementObject obj in mObject)
            {
                string pnp = obj["PNPDeviceID"].ToString();
                if (pnp.Contains("PCI\\"))
                {
                    string mac = obj["MACAddress"].ToString();
                    mac = mac.Replace(":", string.Empty);
                    yield return mac;
                }
            }
        }
    }
}

查找MAC地址的技术来自此处how-to-determine-mac-address-of-the-actual-physical-network-card-not-virtual。

Answer 2

List<IPAddress> localIPs = new List<IPAddress>();

var ifaces = NetworkInterface.GetAllNetworkInterfaces();

//I'm working on unity and it does not allow me to do .ToList().. for some reason.
List<NetworkInterface> IfacesList = new List<NetworkInterface>();
foreach (var i in ifaces)
    IfacesList.Add(i);

var selected = IfacesList.FindAll(x => x.NetworkInterfaceType == NetworkInterfaceType.Ethernet);

if (selected.Count == 1)
{
    var addresses = selected[0].GetIPProperties().UnicastAddresses;

    //once again, cannot use .toList()
    List<UnicastIPAddressInformation> addressesList = new List<UnicastIPAddressInformation>();
    foreach (var address in addresses)
        addressesList.Add(address);

    var ip = addressesList.Find(x => x.Address.AddressFamily == AddressFamily.InterNetwork).Address;
    //return new IPEndPoint(ip, 1);
}
else
{
    //HERE I need to differentiate my IP from VPN IP
    var addresses = selected[1].GetIPProperties().UnicastAddresses;
    IPAddress ip = addresses[0].Address;
    var ipAddress = ip.ToString();


}

区分C＃中的VPN地址和本地地址

2 个答案: