telnet

简明释义

英[ˈtelnet]美[ˈtelnet]

n. 远程登录；用于远程联接服务的标准协议或者实现此协议的软件，可为动词

英英释义

单词用法

同义词

反义词

例句

1.For example, you can use Telnet.

例如，您可以使用telnet。

2.To test it, use a Telnet client or the test case provided with the download.

要测试它，使用telnet客户机或下载提供的测试用例。

3.A lot of solutions prefer SSH over TELNET for its default secure behavior.

由于其默认的安全行为，很多解决方案喜欢ssh胜过telnet。

4.The client tries to connect via a telnet session to a host that has wrappers configured.

客户端试图通过telnet会话连接到配置有wrappers 的主机上。

5.The easiest way to do this is with the telnet command, which is shown in Listing 6.

做到这一点的最简单的方法是使用 telnet命令，如清单 6所示。

6.Code 5: Verify the TELNET automatic logoff functionality.

代码5：验证telnet自动下线功能。

7.To connect to the database, you might need to use telnet to check the connection string.

要连接到数据库，您可能需要使用telnet检查连接字符串。

8.To access the remote server, you can use telnet to establish a connection.

要访问远程服务器，您可以使用telnet建立连接。

9.Before SSH became popular, many users relied on telnet for remote access.

在SSH变得流行之前，许多用户依赖于telnet进行远程访问。

10.You can test the port availability of a service using telnet.

您可以使用telnet测试服务的端口可用性。

11.The network administrator used telnet to troubleshoot the email server.

网络管理员使用telnet来排查电子邮件服务器的问题。

作文

In the realm of computer networking, various protocols facilitate communication between devices. One such protocol is telnet, which allows users to connect to remote servers and manage them as if they were local. Developed in the late 1960s, telnet was one of the first internet protocols and has played a significant role in the development of networked computing. Understanding telnet is essential for anyone interested in network administration, cybersecurity, or system management.To begin with, telnet operates on a client-server model, where the telnet client initiates a connection to a telnet server. This connection is established over the Transmission Control Protocol (TCP), typically using port 23. Once the connection is made, users can send commands to the server, which then executes them and returns the output to the client. This interaction allows for remote management of systems, making telnet a powerful tool for administrators.However, it is important to note that telnet transmits data, including usernames and passwords, in plain text. This lack of encryption poses significant security risks, especially in today's world where cyber threats are prevalent. As a result, many organizations have shifted to more secure alternatives, such as Secure Shell (SSH), which encrypts data during transmission. Despite this shift, telnet remains relevant in certain scenarios, particularly in environments where security is not a primary concern, or for troubleshooting purposes.One of the key advantages of telnet is its simplicity and ease of use. The command-line interface allows users to quickly access remote systems without the need for complex graphical interfaces. This can be particularly useful for managing devices like routers, switches, and servers, where a lightweight approach is often preferred. Additionally, telnet can be used to test connectivity to specific ports on a server, aiding in diagnosing network issues.Moreover, telnet supports a variety of options and commands that enhance its functionality. For instance, users can change terminal settings, control the flow of data, and even perform file transfers. These features make telnet a versatile tool for network professionals.Despite its benefits, the decline in telnet's popularity highlights the importance of security in modern networking practices. As cyber threats continue to evolve, relying solely on unsecured protocols like telnet can lead to vulnerabilities that may be exploited by malicious actors. Therefore, while telnet can still be a useful tool in certain contexts, it is crucial for users to be aware of its limitations and the potential risks involved.In conclusion, telnet is a foundational protocol in the field of computer networking, allowing for remote management and communication with servers. Its simplicity and ease of use have made it a valuable tool for network administrators. However, the lack of security features necessitates caution when using telnet in sensitive environments. As technology continues to advance, understanding both the advantages and limitations of telnet will remain essential for anyone involved in network management and cybersecurity.

在计算机网络的领域中，各种协议促进了设备之间的通信。其中一个这样的协议是telnet，它允许用户连接到远程服务器并像本地管理一样进行管理。telnet于20世纪60年代末开发，是最早的互联网协议之一，在网络计算的发展中发挥了重要作用。理解telnet对于任何对网络管理、网络安全或系统管理感兴趣的人来说都是必不可少的。首先，telnet在客户端-服务器模型上运行，其中telnet客户端发起与telnet服务器的连接。此连接通过传输控制协议（TCP）建立，通常使用23端口。一旦连接建立，用户可以向服务器发送命令，服务器执行这些命令并将输出返回给客户端。这种交互使得对系统的远程管理成为可能，使得telnet成为管理员的强大工具。然而，需要注意的是，telnet以明文形式传输数据，包括用户名和密码。这种缺乏加密的情况带来了重大安全风险，尤其在当今网络威胁普遍存在的世界。因此，许多组织已经转向更安全的替代方案，如安全外壳（SSH），它在传输过程中加密数据。尽管如此，telnet在某些情况下仍然相关，特别是在安全不是主要关注点的环境中，或用于故障排除。telnet的一个主要优点是其简单性和易用性。命令行界面允许用户快速访问远程系统，而无需复杂的图形界面。这对于管理路由器、交换机和服务器等设备尤为有用，因为轻量化的方法通常是首选。此外，telnet可用于测试服务器特定端口的连接性，有助于诊断网络问题。此外，telnet支持多种选项和命令，以增强其功能。例如，用户可以更改终端设置，控制数据流，甚至执行文件传输。这些功能使得telnet成为网络专业人员的多功能工具。尽管有其优点，但telnet受欢迎程度的下降突显了现代网络实践中安全的重要性。随着网络威胁的不断演变，仅依赖于像telnet这样的不安全协议可能导致漏洞，被恶意行为者利用。因此，虽然telnet在某些背景下仍然是一种有用的工具，但用户必须意识到其局限性和潜在风险。总之，telnet是计算机网络领域的基础协议，允许远程管理和与服务器的通信。其简单性和易用性使其成为网络管理员的宝贵工具。然而，缺乏安全功能要求在敏感环境中使用telnet时要小心。随着技术的不断进步，理解telnet的优缺点将对任何参与网络管理和网络安全的人保持至关重要。