如何在ASP.NET中识别用户是在我的网络内部还是外部
本文关键字:我的 网络 外部 内部 识别 ASP NET 用户 | 更新日期: 2023-09-27 18:25:17
我必须确定访问是从我的本地网络(我的服务器的同一网络)混合还是从互联网混合。(使用ASP.NET)
我正计划建立一个额外的安全机制。。我的意思是,如果访问是从外部混合的,我将只"允许"特定的用户。
我试着在网上搜索,但一无所获。
提前谢谢。
您可以执行类似的操作(伪代码)
private bool IsInSameSubnet(IPAddress address, IPAddress address2, IPAddress subnetMask) {
bool isInSameSubnet = false;
IPAddress network1 = GetNetworkAddress(address, subnetMask);
IPAddress network2 = GetNetworkAddress(address2, subnetMask);
if (network1 != null && network2 != null) {
isInSameSubnet = network1.Equals(network2);
}
return isInSameSubnet;
}
private IPAddress GetNetworkAddress(IPAddress address, IPAddress subnetMask) {
byte[] ipAdressBytes = address.GetAddressBytes();
byte[] subnetMaskBytes = subnetMask.GetAddressBytes();
if (ipAdressBytes.Length != subnetMaskBytes.Length)
return null;
//throw new ArgumentException("Lengths of IP address and subnet mask do not match.");
byte[] broadcastAddress = new byte[ipAdressBytes.Length];
for (int i = 0; i < broadcastAddress.Length; i++) {
broadcastAddress[i] = (byte)(ipAdressBytes[i] & (subnetMaskBytes[i]));
}
return new IPAddress(broadcastAddress);
}
其中IsInSameSubnet
地址检查它是否在同一网络中
示例:
string computerIP = getIP();
IPAddress ip1 = IPAddress.Parse(computerIP);
IPAddress ip2 = IPAddress.Parse("192.168.0.0");
IPAddress subnetMask = IPAddress.Parse("255.255.0.0");
和CCD_ 2方法
public static string getIP() {
//if user behind proxy this should get it
string ip = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (ip != null && ip.Split(',').Count() > 1) {
//if (ip.Split(',').Count() > 1)
ip = ip.Split(',')[0];
}
//if user not behind proxy this should do it
if (ip == null)
ip = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
return ip;
}