C#局域网通信--如何打开端口让另一台电脑能够加入并访问该端口呢

Question

问题遇到的现象和发生背景

在做局域网通信时，只能够做到本机电脑与本机自己端口访问，不管是127.0.0开头，还是192.168.1开头，打开后，都只能与监听本机端口的信息

问题相关代码，请勿粘贴截图

服务器端

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;

namespace ServerApp
{
    class SocketServer
    {
        public string _ip;
        public int _port;
        public Socket _socket;
        public byte[] buffer = new byte[1024 * 1024 * 2];

        public string listen_msg, show_msg;

        public void Start()
        {
            try
            {
                _socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                IPAddress address = IPAddress.Parse(_ip);
                IPEndPoint endPoint = new IPEndPoint(address, _port);
                _socket.Bind(endPoint);
                _socket.Listen(int.MaxValue);
                listen_msg = "监听" + _socket.LocalEndPoint.ToString() + "消息成功";
                Thread thread = new Thread(ListenClientConnect);
                thread.Start();
            }
            catch (Exception)
            {
            }
        }

        private void ListenClientConnect()
        {
            try
            {
                while (true)
                {
                    Socket clientSocket = _socket.Accept();
                    clientSocket.Send(Encoding.UTF8.GetBytes("服务端向客户端问好\n"));
                    Thread thread = new Thread(ReceiveMessage);
                    thread.Start(clientSocket);
                }
            }
            catch (Exception) { }
        }

        private void ReceiveMessage(object socket)
        {
            Socket clientSocket = (Socket)socket;
            while (true)
            {
                try
                {
                    int length = clientSocket.Receive(buffer);
                    show_msg += string.Format("{0}", Encoding.UTF8.GetString(buffer, 0, length)) + "\n\n";
                }
                catch (Exception)
                {
                    clientSocket.Shutdown(SocketShutdown.Both);
                    clientSocket.Close();
                    break;
                }
            }
        }
    }
}

客户端

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace ClientApp
{
    class SocketClient
    {
        public string _ip;
        public int _port;
        public Socket _socket;
        public byte[] buffer = new byte[1024 * 1024 * 2];

        public string listen_msg, send_name, send_msg;        

        public void Start()
        {
            try
            {
                _socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                IPAddress address = IPAddress.Parse(_ip);
                IPEndPoint endPoint = new IPEndPoint(address, _port);
                _socket.Connect(endPoint);

                int length = _socket.Receive(buffer);
                listen_msg = Encoding.UTF8.GetString(buffer, 0, length);

                string sendMessage = string.Format("{0}：{1}, {2}", send_name, send_msg, DateTime.Now.ToString());
                _socket.Send(Encoding.UTF8.GetBytes(sendMessage));
            }
            catch (Exception)
            {
                _socket.Close();
            }
        }
    }
}

运行结果及报错内容

如何实现在一台电脑打开服务器端口，监听别的电脑上的客户端的信息

我的解答思路和尝试过的方法

想过用数据库实现，将信息放在服务器上，在服务器上架构好网站，类似于B/S架构，浏览器可以访问网页，通过表单修改数据库内信息，虽然没有具体尝试过，但感觉是可行的，但这样的情况与这个局域网通信不太一样，虽然都用到了计算机网络的知识

我想要达到的结果

实现两台电脑间端口的监听，一台作为服务器，一台作为客户端