Xshell uses SSH to remotely log in to Alibaba Cloud ECS server CentOS7

Purchase a new Alibaba Cloud ECS server and configure it according to your choice

1. Configure the inbound direction of the security group to allow the TCP 22/22 port to pass through

2. Restart the server

3. root login

4. Check if port 22 is open
[root@localhost ~]# netstat -tnl
If the following content is displayed, it means that port 22 is open
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0* LISTEN

5. Check whether the ssh service is started
[root@localhost ~]# systemctl status sshd.service
If the following content is displayed, the ssh service has been started
Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2017-12-14 02:06:56 CST; 38min ago
Docs: man:sshd(8)
Main PID: 2576 (sshd)
CGroup: /system.slice/sshd.service
└ ─ 2576 /usr/sbin/sshd -D

6. Use Xshell to log in to the server remotely via SSH

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