Xshell连接Ubuntu失败

错误：

Xshell连接Ubuntu失败。

Connecting to 192.168.xx.xxx:22...Could not connect to 192.168.xx.xxx' (port 22): Connection failed.

systemctl status ssh

发现没有ssh。

#安装ssh程序

sudo apt-get install openssh-server

启动服务

sudo systemctl start ssh