我们都知道在windows 2008 r2下想要使用telnet,会提示没有这个命令,现在来告诉下大家在windows 2008 r2怎么使用命令来安装telnet-client. 
 1.先查看windows有没有安装telnet,可以看到没有这个命令 
  
 2.在运行里输入powershell,进入powershell模式 
 3.开始安装telnet客户端 
 servermanagercmd -install telnet-client 
  
 4.卸载telnet客户端 
 servermanagercmd -remove telnet-client 
 
 
 windows 7 安装telnet服务
 
  
 
 

原文地址为：
Windows Server2008 Server 安装Telnet服务




在 Windows Server 2008 上，可以使用角色管理工具安装可选组件。
在 Windows Server 2008 上安装 Telnet 服务器的步骤

    启动服务器管理器。单击“开始”，右键单击“计算机”，然后单击“管理”。
    如果出现“用户帐户控制”对话框，请确认所显示的是您要执行的操作，然后单击“继续”。
    在“功能摘要”部分，单击“添加功能”。
    在“选择功能”页上，选择“Telnet 服务器”。还可以根据需要选择“Telnet 客户端”。
    单击“下一步”，然后在“确认安装选项”页上，单击“安装”。
    在“安装结果”页上，单击“关闭”。
    关闭“服务器管理器”。

    在可以使用 Telnet 服务器服务之前，必须启用该服务。
        打开已提升权限的命令提示符。右键单击“命令提示符”快捷方式，然后单击“以管理员身份运行”。
        如果出现“用户帐户控制”对话框，请确认所显示的是您要执行的操作，然后单击“继续”。
        键入以下命令之一：
            若要启动 Telnet 服务器，请键入 net start telnet。
            若要停止 Telnet 服务器，请键入 net stop telnet。

    而且安装完后要确实在系统防火墙中充许Telnet 服务。

    在 Windows Server 2008 上，可以使用角色管理工具安装可选组件。

    在 Windows Server 2008 上安装 Telnet 客户端的步骤
        启动服务器管理器。单击“开始”，右键单击“计算机”，然后单击“管理”。
        如果出现“用户帐户控制”对话框，请确认所显示的是您要执行的操作，然后单击“继续”。
        在“功能摘要”部分，单击“添加功能”。
        在“添加功能向导”中，选择“Telnet 客户端”，然后单击“下一步”。
        在“确认安装选择”页上，单击“安装”。

        安装完成后，在“安装结果”页上，单击“关闭”。

        以上安装可以在Win7 /vistar 的方法都大同小异。不过在网上看到文章说Win2008破解版安装有的服务会出问题，我暂进没有遇到过。

转载请注明本文地址：
Windows Server2008 Server 安装Telnet服务

默认的Windows2008R2上没有telnet client和telnet 服务，需要自己安装。
 
从控制中心选择管理工具，中的服务器配置，然后添加功能，就行。
 
如图所示：
 

 
 

 
 

 

在Windows2008中，不知道为什么把telnet服务没有默认安装,从windows95到Windowsxp一直都有的。
 
下面使用ServerManagerCMD命令进行安装！
 
　　ServerManagerCMD是服务器管理器的命令行工具，用于支持三种重要的操作：添加和删除角色、角色服务、功能，以及用于显示安装的角色、角色服务、功能。对于去具体的参数大家可以在命令行下输入“ServerManagerCMD /?”进行查看。其中-query、-install、-remove是三个最常用的参数，分别用户查询、安装和删除服务器角色、角色服务和功能。
 Examples:
 
    ServerManagerCmd.exe -query
 
    ServerManagerCmd.exe -install Web-Server -resultPath installResult.xml
 
    ServerManagerCmd.exe -inputPath install.xml -whatIf
 

 C:\Windows\winsxs\amd64_microsoft-windows-telnet-client_31bf3856ad364e35_6.1.760
 0.16385_none_1426830c3ebb712d>servermanagercmd -query
 
Servermanagercmd.exe is deprecated, and is not guaranteed to be supported in fut
 ure releases of Windows. We recommend that you use the Windows PowerShell cmdlet
 s that are available for Server Manager.
 
 
 
----- Roles -----
 
[ ] Active Directory Certificate Services  [AD-Certificate]
     [ ] Certification Authority  [ADCS-Cert-Authority]
     [ ] Certification Authority Web Enrollment  [ADCS-Web-Enrollment]
     [ ] Online Responder  [ADCS-Online-Cert]
     [ ] Network Device Enrollment Service  [ADCS-Device-Enrollment]
     [ ] Certificate Enrollment Web Service  [ADCS-Enroll-Web-Svc]
     [ ] Certificate Enrollment Policy Web Service  [ADCS-Enroll-Web-Pol]
 [ ] Active Directory Domain Services  [AD-Domain-Services]
     [ ] Active Directory Domain Controller  [ADDS-Domain-Controller]
     [ ] Identity Management for UNIX  [ADDS-Identity-Mgmt]
         [ ] Server for Network Information Services  [ADDS-NIS]
         [ ] Password Synchronization  [ADDS-Password-Sync]
         [ ] Administration Tools  [ADDS-IDMU-Tools]
 [ ] Active Directory Federation Services  [AD-Federation-Services]
     [ ] Federation Service  [ADFS-Federation]
     [ ] Federation Service Proxy  [ADFS-Proxy]
     [ ] AD FS Web Agents  [ADFS-Web-Agents]
         [ ] Claims-aware Agent  [ADFS-Claims]
         [ ] Windows Token-based Agent  [ADFS-Windows-Token]
 [ ] Active Directory Lightweight Directory Services  [ADLDS]
 [ ] Active Directory Rights Management Services  [ADRMS]
     [ ] Active Directory Rights Management Server  [ADRMS-Server]
     [ ] Identity Federation Support  [ADRMS-Identity]
 [ ] Application Server  [Application-Server]
     [ ] .NET Framework 3.5.1  [AS-NET-Framework]
     [ ] Web Server (IIS) Support  [AS-Web-Support]
     [ ] COM+ Network Access  [AS-Ent-Services]
     [ ] TCP Port Sharing  [AS-TCP-Port-Sharing]
     [X] Windows Process Activation Service Support  [AS-WAS-Support]
         [ ] HTTP Activation  [AS-HTTP-Activation]
         [ ] Message Queuing Activation  [AS-MSMQ-Activation]
         [X] TCP Activation  [AS-TCP-Activation]
         [X] Named Pipes Activation  [AS-Named-Pipes]
     [ ] Distributed Transactions  [AS-Dist-Transaction]
         [ ] Incoming Remote Transactions  [AS-Incoming-Trans]
         [ ] Outgoing Remote Transactions  [AS-Outgoing-Trans]
         [ ] WS-Atomic Transactions  [AS-WS-Atomic]
 [ ] DHCP Server  [DHCP]
 [ ] DNS Server  [DNS]
 [ ] Fax Server  [Fax]
 [ ] File Services  [File-Services]
     [ ] File Server  [FS-FileServer]
     [ ] Distributed File System  [FS-DFS]
         [ ] DFS Namespaces  [FS-DFS-Namespace]
         [ ] DFS Replication  [FS-DFS-Replication]
     [ ] File Server Resource Manager  [FS-Resource-Manager]
     [ ] Services for Network File System  [FS-NFS-Services]
     [ ] Windows Search Service  [FS-Search-Service]
     [ ] Windows Server 2003 File Services  [FS-Win2003-Services]
         [ ] Indexing Service  [FS-Indexing-Service]
     [ ] BranchCache for network files  [FS-BranchCache]
 [ ] Hyper-V  [Hyper-V]
 [ ] Network Policy and Access Services  [NPAS]
     [ ] Network Policy Server  [NPAS-Policy-Server]
     [ ] Routing and Remote Access Services  [NPAS-RRAS-Services]
         [ ] Remote Access Service  [NPAS-RRAS]
         [ ] Routing  [NPAS-Routing]
     [ ] Health Registration Authority  [NPAS-Health]
     [ ] Host Credential Authorization Protocol  [NPAS-Host-Cred]
 [ ] Print and Document Services  [Print-Services]
     [ ] Print Server  [Print-Server]
     [ ] LPD Service  [Print-LPD-Service]
     [ ] Internet Printing  [Print-Internet]
     [ ] Distributed Scan Server  [Print-Scan-Server]
 [ ] Remote Desktop Services  [Remote-Desktop-Services]
     [ ] Remote Desktop Session Host  [RDS-RD-Server]
     [ ] Remote Desktop Virtualization Host  [RDS-Virtualization]
         [ ] Core Services  [RDS-Virtualization-Core]
         [ ] RemoteFX  [RDS-RemoteFX]
     [ ] Remote Desktop Licensing  [RDS-Licensing]
     [ ] Remote Desktop Connection Broker  [RDS-Connection-Broker]
     [ ] Remote Desktop Gateway  [RDS-Gateway]
     [ ] Remote Desktop Web Access  [RDS-Web-Access]
 [X] Web Server (IIS)  [Web-Server]
     [X] Web Server  [Web-WebServer]
         [X] Common HTTP Features  [Web-Common-Http]
             [X] Static Content  [Web-Static-Content]
             [X] Default Document  [Web-Default-Doc]
             [X] Directory Browsing  [Web-Dir-Browsing]
             [X] HTTP Errors  [Web-Http-Errors]
             [ ] HTTP Redirection  [Web-Http-Redirect]
             [ ] WebDAV Publishing  [Web-DAV-Publishing]
         [X] Application Development  [Web-App-Dev]
             [X] ASP.NET  [Web-Asp-Net]
             [X] .NET Extensibility  [Web-Net-Ext]
             [X] ASP  [Web-ASP]
             [ ] CGI  [Web-CGI]
             [X] ISAPI Extensions  [Web-ISAPI-Ext]
             [X] ISAPI Filters  [Web-ISAPI-Filter]
             [ ] Server Side Includes  [Web-Includes]
         [X] Health and Diagnostics  [Web-Health]
             [X] HTTP Logging  [Web-Http-Logging]
             [X] Logging Tools  [Web-Log-Libraries]
             [X] Request Monitor  [Web-Request-Monitor]
             [X] Tracing  [Web-Http-Tracing]
             [X] Custom Logging  [Web-Custom-Logging]
             [X] ODBC Logging  [Web-ODBC-Logging]
         [X] Security  [Web-Security]
             [ ] Basic Authentication  [Web-Basic-Auth]
             [ ] Windows Authentication  [Web-Windows-Auth]
             [ ] Digest Authentication  [Web-Digest-Auth]
             [ ] Client Certificate Mapping Authentication  [Web-Client-Auth]
             [ ] IIS Client Certificate Mapping Authentication  [Web-Cert-Auth]
             [ ] URL Authorization  [Web-Url-Auth]
             [X] Request Filtering  [Web-Filtering]
             [ ] IP and Domain Restrictions  [Web-IP-Security]
         [X] Performance  [Web-Performance]
             [X] Static Content Compression  [Web-Stat-Compression]
             [ ] Dynamic Content Compression  [Web-Dyn-Compression]
     [X] Management Tools  [Web-Mgmt-Tools]
         [X] IIS Management Console  [Web-Mgmt-Console]
         [ ] IIS Management Scripts and Tools  [Web-Scripting-Tools]
         [X] Management Service  [Web-Mgmt-Service]
         [X] IIS 6 Management Compatibility  [Web-Mgmt-Compat]
             [X] IIS 6 Metabase Compatibility  [Web-Metabase]
             [X] IIS 6 WMI Compatibility  [Web-WMI]
             [X] IIS 6 Scripting Tools  [Web-Lgcy-Scripting]
             [X] IIS 6 Management Console  [Web-Lgcy-Mgmt-Console]
     [X] FTP Server  [Web-Ftp-Server]
         [X] FTP Service  [Web-Ftp-Service]
         [X] FTP Extensibility  [Web-Ftp-Ext]
     [ ] IIS Hostable Web Core  [Web-WHC]
 [ ] Windows Deployment Services  [WDS]
     [ ] Deployment Server  [WDS-Deployment]
     [ ] Transport Server  [WDS-Transport]
 [ ] Windows Server Update Services  [OOB-WSUS]
 
----- Features -----
 
[X] .NET Framework 3.5.1 Features  [NET-Framework]
     [X] .NET Framework 3.5.1  [NET-Framework-Core]
     [X] WCF Activation  [NET-Win-CFAC]
         [X] HTTP Activation  [NET-HTTP-Activation]
         [X] Non-HTTP Activation  [NET-Non-HTTP-Activ]
 [ ] Background Intelligent Transfer Service (BITS)  [BITS]
     [ ] Compact Server  [BITS-Compact-Server]
     [ ] IIS Server Extension  [BITS-IIS-Ext]
 [ ] BitLocker Drive Encryption  [BitLocker]
 [ ] BranchCache  [BranchCache]
 [ ] Connection Manager Administration Kit  [CMAK]
 [X] Desktop Experience  [Desktop-Experience]
 [ ] DirectAccess Management Console  [DAMC]
 [ ] Failover Clustering  [Failover-Clustering]
 [ ] Group Policy Management  [GPMC]
 [X] Ink and Handwriting Services  [Ink-Handwriting]
     [X] Ink Support  [IH-Ink-Support]
     [ ] Handwriting Recognition  [IH-Handwriting]
 [ ] Internet Printing Client  [Internet-Print-Client]
 [ ] Internet Storage Name Server  [ISNS]
 [ ] LPR Port Monitor  [LPR-Port-Monitor]
 [X] Message Queuing  [MSMQ]
     [X] Message Queuing Services  [MSMQ-Services]
         [X] Message Queuing Server  [MSMQ-Server]
         [ ] Directory Service Integration  [MSMQ-Directory]
         [ ] Message Queuing Triggers  [MSMQ-Triggers]
         [ ] HTTP Support  [MSMQ-HTTP-Support]
         [ ] Multicasting Support  [MSMQ-Multicasting]
         [ ] Routing Service  [MSMQ-Routing]
     [ ] Message Queuing DCOM Proxy  [MSMQ-DCOM]
 [ ] Multipath I/O  [Multipath-IO]
 [ ] Network Load Balancing  [NLB]
 [ ] Peer Name Resolution Protocol  [PNRP]
 [ ] Quality Windows Audio Video Experience  [qWave]
 [ ] Remote Assistance  [Remote-Assistance]
 [ ] Remote Differential Compression  [RDC]
 [X] Remote Server Administration Tools  [RSAT]
     [X] Role Administration Tools  [RSAT-Role-Tools]
         [ ] Active Directory Certificate Services Tools  [RSAT-ADCS]
             [ ] Certification Authority Tools  [RSAT-ADCS-Mgmt]
             [ ] Online Responder Tools  [RSAT-Online-Responder]
         [ ] AD DS and AD LDS Tools  [RSAT-AD-Tools]
             [ ] AD DS Tools  [RSAT-ADDS]
                 [ ] AD DS Snap-Ins and Command-Line Tools  [RSAT-ADDS-Tools]
                 [ ] Active Directory Administrative Center  [RSAT-AD-AdminCenter
 ]
                 [ ] Server for NIS Tools  [RSAT-SNIS]
             [ ] AD LDS Snap-Ins and Command-Line Tools  [RSAT-ADLDS]
             [ ] Active Directory module for Windows PowerShell  [RSAT-AD-PowerSh
 ell]
         [ ] Active Directory Rights Management Services Tools  [RSAT-RMS]
         [ ] DHCP Server Tools  [RSAT-DHCP]
         [ ] DNS Server Tools  [RSAT-DNS-Server]
         [ ] Fax Server Tools  [RSAT-Fax]
         [ ] File Services Tools  [RSAT-File-Services]
             [ ] Distributed File System Tools  [RSAT-DFS-Mgmt-Con]
             [ ] File Server Resource Manager Tools  [RSAT-FSRM-Mgmt]
             [ ] Services for Network File System Tools  [RSAT-NFS-Admin]
         [ ] Hyper-V Tools  [RSAT-Hyper-V]
         [ ] Network Policy and Access Services Tools  [RSAT-NPAS]
         [ ] Print and Document Services Tools  [RSAT-Print-Services]
         [ ] Remote Desktop Services Tools  [RSAT-RDS]
             [ ] Remote Desktop Session Host Tools  [RSAT-RDS-RemoteApp]
             [ ] Remote Desktop Gateway Tools  [RSAT-RDS-Gateway]
             [ ] Remote Desktop Licensing Tools  [RSAT-RDS-Licensing]
             [ ] Remote Desktop Connection Broker Tools  [RSAT-RDS-Conn-Broker]
         [X] Web Server (IIS) Tools  [RSAT-Web-Server]
         [ ] Windows Deployment Services Tools  [RSAT-WDS]
     [ ] Feature Administration Tools  [RSAT-Feature-Tools]
         [ ] BitLocker Drive Encryption Administration Utilities  [RSAT-BitLocker
 ]
             [ ] BitLocker Drive Encryption Tools  [RSAT-Bitlocker-DriveEnc]
             [ ] BitLocker Recovery Password Viewer  [RSAT-Bitlocker-RecPwd]
         [ ] BITS Server Extensions Tools  [RSAT-Bits-Server]
         [ ] Failover Clustering Tools  [RSAT-Clustering]
         [ ] Network Load Balancing Tools  [RSAT-NLB]
         [ ] SMTP Server Tools  [RSAT-SMTP]
         [ ] WINS Server Tools  [RSAT-WINS]
 [ ] RPC over HTTP Proxy  [RPC-over-HTTP-Proxy]
 [ ] Simple TCP/IP Services  [Simple-TCPIP]
 [ ] SMTP Server  [SMTP-Server]
 [ ] SNMP Services  [SNMP-Services]
     [ ] SNMP Service  [SNMP-Service]
     [ ] SNMP WMI Provider  [SNMP-WMI-Provider]
 [ ] Storage Manager for SANs  [Storage-Mgr-SANS]
 [ ] Subsystem for UNIX-based Applications  [Subsystem-UNIX-Apps]
 [ ] Telnet Client  [Telnet-Client]
 [ ] Telnet Server  [Telnet-Server]
 [ ] TFTP Client  [TFTP-Client]
 [ ] Windows Biometric Framework  [Biometric-Framework]
 [ ] Windows Internal Database  [Windows-Internal-DB]
 [ ] Windows PowerShell Integrated Scripting Environment (ISE)  [PowerShell-ISE]
 [X] Windows Process Activation Service  [WAS]
     [X] Process Model  [WAS-Process-Model]
     [X] .NET Environment  [WAS-NET-Environment]
     [X] Configuration APIs  [WAS-Config-APIs]
 [ ] Windows Server Backup Features  [Backup-Features]
     [ ] Windows Server Backup  [Backup]
     [ ] Command-line Tools  [Backup-Tools]
 [ ] Windows Server Migration Tools  [Migration]
 [ ] Windows System Resource Manager  [WSRM]
 [ ] Windows TIFF IFilter  [TIFF-IFilter]
 [ ] WinRM IIS Extension  [WinRM-IIS-Ext]
 [ ] WINS Server  [WINS-Server]
 [ ] Wireless LAN Service  [Wireless-Networking]
 [ ] XPS Viewer  [XPS-Viewer]
 
C:\Windows\winsxs\amd64_microsoft-windows-telnet-client_31bf3856ad364e35_6.1.760
 0.16385_none_1426830c3ebb712d>servermanagercmd -query|more telnet
 Cannot access file C:\Windows\winsxs\amd64_microsoft-windows-telnet-client_31bf3
 856ad364e35_6.1.7600.16385_none_1426830c3ebb712d\telnet
 
C:\Windows\winsxs\amd64_microsoft-windows-telnet-client_31bf3856ad364e35_6.1.760
 0.16385_none_1426830c3ebb712d>servermanagercmd -install telnet-client
 
Servermanagercmd.exe is deprecated, and is not guaranteed to be supported in fut
 ure releases of Windows. We recommend that you use the Windows PowerShell cmdlet
 s that are available for Server Manager.
 
 
 
Start Installation...
 [Installation] Succeeded: [Telnet Client] Telnet Client.
 <100/100>
 
Success: Installation succeeded.
 
C:\Windows\winsxs\amd64_microsoft-windows-telnet-client_31bf3856ad364e35_6.1.760
 0.16385_none_1426830c3ebb712d>