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文章 2023-06-19 来自：开发者社区

阿里云CENTOS7 SSH连接失败

今天用阿里云装完一些软件之后，突然后连接不上了，显示：登录实例失败，原因：拒绝连接。用SSH连接如下图所示：然后用DRP连接，也报错，如下如所示：然后，当时是防火墙阻挡了，然后按照网上方法，配置了白名单，结果也没有用，莫名其妙的是什么也没改，就莫名其妙的登录不上了，反正折腾了好久，没有解决。然后也通过VNC登录，把服务器的防火墙都给关闭了，然后再连接也报错了，然后没有办法给阿里云提了一个工单，寻....

阿里云CENTOS7 SSH连接失败

问答 2022-03-14 来自：开发者社区

阿里云ECS-CentOS7修改ssh默认端口

修改了系统的ssh默认端口，但是始终无法连接。用telnet也无法联通。怀疑是iptables的问题，但是执行命令发现iptables并没有运行。 google一遍，发现centos7的防火墙已经由原来的iptables改为了firewall，经过测试，果然是这个原因。解决方法如下： 1.centos7的防火墙状态命令： firewall-cmd...

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更新时间 2024-08-20 16:51:15

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