telnet命令的主要作用是与目标端口进行TCP连接（即完成TCP三次握手）。当服务端启动后，但是telnet其监听的端口，却失败了。或者，当服务端运行了一段时间后，突然其监听的端口telnet不通了。当类似这样的telnet失败的情况出现时，都可以按照如下方面进行排查： 1.观察一下服务端进程的CPU和内存是否...

文章 2022-02-16 来自：开发者社区

已开启安全组，服务器防火墙关闭，445 139端口开启，但是无法smb连接。telnet端口失败。

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更新时间 2024-07-17 09:38:45

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云服务器ECS

云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。

产品详情页

ECS控制台

新用户免费试用