这段C#代码用于检测长途计算机的3389端口是否措置惩罚惩罚打开状态，可以按照实际需要设置其它端口

using System; using System.Collections.Generic; using System.Text; using System.Net.NetworkInformation; namespace test { class Program { static void Main(string[] args) { GetTcpConnections(); } public static void GetTcpConnections() { IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties(); TcpConnectionInformation[] connections = properties.GetActiveTcpConnections(); foreach (TcpConnectionInformation t in connections) { Console.Write("Local endpoint: {0} ", t.LocalEndPoint.ToString()); Console.Write("Remote endpoint: {0} ", t.RemoteEndPoint.ToString()); Console.WriteLine("{0}", t.State); } Console.WriteLine(); Console.ReadLine(); } } }

运行功效如下：

Local endpoint: 127.0.0.1:1025 Remote endpoint: 127.0.0.1:1026 Established Local endpoint: 127.0.0.1:1026 Remote endpoint: 127.0.0.1:1025 Established Local endpoint: 127.0.0.1:1028 Remote endpoint: 127.0.0.1:16992 CloseWait Local endpoint: 127.0.0.1:1110 Remote endpoint: 127.0.0.1:4900 Established Local endpoint: 127.0.0.1:2754 Remote endpoint: 127.0.0.1:1110 CloseWait Local endpoint: 127.0.0.1:2762 Remote endpoint: 127.0.0.1:1110 CloseWait Local endpoint: 127.0.0.1:2773 Remote endpoint: 127.0.0.1:1110 CloseWait Local endpoint: 127.0.0.1:2913 Remote endpoint: 127.0.0.1:1110 CloseWait Local endpoint: 127.0.0.1:3014 Remote endpoint: 127.0.0.1:1110 CloseWait Local endpoint: 127.0.0.1:3531 Remote endpoint: 127.0.0.1:1110 CloseWait Local endpoint: 127.0.0.1:4012 Remote endpoint: 127.0.0.1:1110 CloseWait Local endpoint: 127.0.0.1:4900 Remote endpoint: 127.0.0.1:1110 Established