telnet网络返回结果(telnet返回400)

TELNET如何显示出完整的返回信息

可以在net start后面加上 > test.txt 也就是打上命令 net start > test.txt 就是把结果输入到test.txt里,然后你在查看这个文件.查看文件应该可以翻页的吧?希望对你有用

telnet服务器的端口，返回的效果既不是通的，也不是不通。

从返回信息看，这是个FTP服务，所以要用FTP客户端连，不是用telnet

是用telnet ip 端口号的方式查看端口开放情况，怎样通过返回值判断？

你好，在cmd中输入 telnet ip 端口号，会有两种返回结果，一种为：正在连接到（ip）...不能打开到主机的连接，在端口（端口号）：连接失败这个为该IP该端口未开放的返回结果另一种则会打开一个新的cdm窗口，并关闭原来的窗口，这就表示了该ip该窗口属于开放状态
telnet 上去如果是黑乎乎的界面，看见光标在闪，说明端口开放。如果不能打开端口就是没开放了。
你可以直接在DOS系统下输入命令netstat -an来查看相应的端口是否开放
在DOS下入命令netstat -an。只要能看到的都是打开的，没有显示出来的就是没有打开的端口。

C# winform点击按钮执行telnet登陆，并且执行命令，返回结果，求代码示例。

//我自己用的telnetHelper类using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Net.Sockets;using System.Net;using System.Threading;namespace AFC_APP1{ public class TelnetHelper2 { string hostName; string login; string password; int port = 23; IPAddress ipAdd; IPEndPoint ipEnd; Socket mysocket; ///

/// 默认构造函数 ///

public TelnetHelper2(){ } ///

/// 构造函数 ///

/// /// /// public TelnetHelper2(string hostName,string login,string password) { this.hostName = hostName; this.login = login; this.password = password; ipAdd=IPAddress.Parse(hostName); ipEnd = new IPEndPoint(ipAdd, port); mysocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); } ///

/// 连接 ///

private void ConnetServer() { char[] sendfirst = new char[3]; sendfirst[0] = (char)(255); sendfirst[1] = (char)(252); sendfirst[2] = (char)(24); byte[] sendfirstbytetemp = Encoding.Unicode.GetBytes(sendfirst); byte[] sendfirstbyte = new byte[sendfirstbytetemp.Length / 2]; sendfirstbyte[0] = sendfirstbytetemp[0]; sendfirstbyte[1] = sendfirstbytetemp[2]; sendfirstbyte[2] = sendfirstbytetemp[4]; mysocket.Send(sendfirstbyte, 0, sendfirstbyte.Length, SocketFlags.None); Thread.Sleep(300); byte[] sendusernametemp = Encoding.ASCII.GetBytes(login); byte[] sendusername = new byte[sendusernametemp.Length + 1]; char[] closechar = new char[2]; closechar[0] = (char)(10); closechar[1] = (char)(13); byte[] closebyte = Encoding.ASCII.GetBytes(closechar); for (int i = 0; i < sendusernametemp.Length; i++) { sendusername[i] = sendusernametemp[i]; } sendusername[sendusername.Length - 1] = closebyte[0]; mysocket.Send(sendusername, 0, sendusername.Length, SocketFlags.None); Thread.Sleep(300); byte[] senduserpasswdtemp = Encoding.ASCII.GetBytes(password); byte[] senduserpasswd = new byte[senduserpasswdtemp.Length + 1]; char[] closechar2 = new char[2]; closechar2[0] = (char)(10); closechar2[1] = (char)(13); byte[] closebyte2 = Encoding.ASCII.GetBytes(closechar2); for (int i = 0; i < senduserpasswdtemp.Length; i++) { senduserpasswd[i] = senduserpasswdtemp[i]; } senduserpasswd[senduserpasswd.Length - 1] = closebyte2[0]; mysocket.Send(senduserpasswd, 0, senduserpasswd.Length, SocketFlags.None); Thread.Sleep(500); } ///

/// 执行命令 ///

/// private void ExcuteCommand(string cmd) { char[] sendfirst = new char[3]; sendfirst[0] = (char)(255); sendfirst[1] = (char)(252); sendfirst[2] = (char)(24); byte[] sendfirstbytetemp = Encoding.Unicode.GetBytes(sendfirst); byte[] sendfirstbyte = new byte[sendfirstbytetemp.Length / 2]; sendfirstbyte[0] = sendfirstbytetemp[0]; sendfirstbyte[1] = sendfirstbytetemp[2]; sendfirstbyte[2] = sendfirstbytetemp[4]; mysocket.Send(sendfirstbyte, 0, sendfirstbyte.Length, SocketFlags.None); Thread.Sleep(300); byte[] recvdatauser = new byte[4096]; mysocket.Receive(recvdatauser, 0, mysocket.Available, SocketFlags.None); string recvuserstr = Encoding.ASCII.GetString(recvdatauser); recvuserstr = recvuserstr.Substring(login.Length, recvuserstr.Length - login.Length);//去掉了服务器回显的用户名 recvuserstr = recvuserstr.TrimEnd(''); Console.Write(recvuserstr); Thread.Sleep(300); byte[] sendusernametemp = Encoding.ASCII.GetBytes(cmd); byte[] sendusername = new byte[sendusernametemp.Length + 1]; char[] closechar = new char[2]; closechar[0] = (char)(10); closechar[1] = (char)(13); byte[] closebyte = Encoding.ASCII.GetBytes(closechar); for (int i = 0; i < sendusernametemp.Length; i++) { sendusername[i] = sendusernametemp[i]; } sendusername[sendusername.Length - 1] = closebyte[0]; mysocket.Send(sendusername, 0, sendusername.Length, SocketFlags.None); Thread.Sleep(500); } ///

/// 获取数据 ///

/// public string GetData(string cmd) { try { mysocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); mysocket.Connect(ipEnd); ConnetServer(); //连接服务 ExcuteCommand(cmd);//执行命令 byte[] recvdatauser = new byte[8192]; mysocket.Receive(recvdatauser, 0, mysocket.Available, SocketFlags.None); string recvuserstr = Encoding.ASCII.GetString(recvdatauser); recvuserstr = recvuserstr.TrimEnd(''); mysocket.Close(); System.Threading.Thread.Sleep(300); //Console.Write("recvuserstr_string：" + recvuserstr); recvuserstr = recvuserstr.Substring(cmd.Length, recvuserstr.Length - cmd.Length).TrimStart();//去掉了服务器回显 recvuserstr = this.login.Equals("root") ? recvuserstr.Replace("#", "").TrimEnd() : recvuserstr.Replace("$", "").TrimEnd(); return recvuserstr;//.Split('r')[1].Trim(); } catch (Exception ex) { LogHelper.WriteTelnetLog(ex.ToString()); return "EXError："+ex.ToString(); } } }}

C# winform点击按钮执行telnet登陆，并且执行命令，返回结果，求代码示例。

C语言获取telnet返回值写文件

telnet的输出不在本地管道，所以你没办法重定向到文件里面，或许你用.net库函数调用PowerShell能实现（只是想法，未尝试），不知道会不会偏离你的要求太远了。