如何检查Telnet是否在服务器跑

Telnet (电信网)是在普遍互联网或区域网(LAN)连接用于的一个无担保的网络协议遥远地访问一台服务器从客户。 问题与Telnet是会议是末加密以用户名，并且密码横跨网络在纯文本传送，很大地增加安全风险。

如果您想要辨认和检查Telnet服务是否在您的服务器跑，特别是在暴露在全世界攻击的网络服务器或WEB主机，这一个容易的方法进行证明在Telnet过程。

容易的方法检查Telnet过程是否跑或不在服务器是通过使用显示当前跑处理的ps命令。 要检查所有赛跑Telnet过程，注册到服务器通过SSH (或完全使用控制台，如果您能Telnet入服务器， Telnet服务明显地跑)，和跑以下命令：

ps -辅助 | grep telnet

如果结果退回任何其他过程除“grep telnet之外”线意味着某一Telnet过程跑或打开会议。

二者择一地，扫描您的服务器为开端口23， Telnet通常使用连接。 如果口岸23不是闭合的，卑鄙Telnet服务也许跑。 要检查口岸23是否是闭合或开始，您需要有在服务器安装的nmap。 命令使用是：

nmap - sT - O localhost

重要: 这是现状提供，不用保单的机器翻译的页。 计算机翻译也许是难了解。 参见 原始的英国文章 每当可能。

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This entry was posted on Sunday, August 19th, 2007 at 8:22 pm and is filed under Webmaster Resources. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

One Response to “How to Check if Telnet Is Running on a Server”

  1. Disable and Turn Off Telnet in Linux » My Digital Life
    August 19th, 2007 22:19
    1

    [...] some web hosting providers has Telnet disabled by default. Webmasters or system administrators can verify if the Telnet service is turned off. If it’s still running, the following guide will provide steps to disable and turn off Telnet [...]

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