public static InterfaceData ReturnInterfaceData()
{
// Grab only the Network Interfaces that are either wireless OR ethernet and have DHCP enabled.
var network = NetworkInterface
.GetAllNetworkInterfaces()
.Where(intf => intf.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 ||
intf.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
.Where(interf => interf.GetIPProperties().GetIPv4Properties().IsDhcpEnabled);
// Loop over all the interfaces to find the one that i'm currently connected to.
foreach (NetworkInterface enterFace in network)
{
var data = enterFace.GetIPProperties();
if (string.IsNullOrEmpty(data.DnsSuffix)) // noticed that the network you're connected to has a DNSSuffix all other interfaces have nothing.
{
continue;
}
//store some data from that interface into an object to be used later.
InterfaceData interfaceData = new InterfaceData()
{
DnsSuffix = data.DnsSuffix,
DnsAddress = data.DnsAddresses,
IpAddressInformation =
data.UnicastAddresses.FirstOrDefault(d => d.Address.AddressFamily == AddressFamily.InterNetwork), //UnicastAddresses has a list of IPAddressInfo. I need just one.
MacAddress = enterFace.GetPhysicalAddress()
};
return(interfaceData);
}
// probably should check if i return null. shouldn't be possible to get null if i'm on the internet though.
return(null);
}
public FrmSmurf()
{
InitializeComponent();
Instantiations++;
deviceInfo = Utils.ReturnInterfaceData();
arpTable = Utils.GetArpTable();
//filter the dictionary to only grab the ip/mac of the clients on the same subnet.
arpTableFiltering();
// write out some data upon initiliazation.
txtDnsSuffix.Text = deviceInfo.DnsSuffix;
txtIp.Text = deviceInfo.IpAddressInformation.Address.ToString();
txtMask.Text = deviceInfo.IpAddressInformation.IPv4Mask.ToString();
txtClass.Text = Utils.IdentifyClass(deviceInfo.IpAddressInformation.Address);
txtMacAddress.Text = MacAddressFormat(deviceInfo.MacAddress);
cboAttackers.Items.AddRange(arpTable.Keys.ToArray());
}