ssh

安装 ssh server

https://cloud.tencent.com/developer/article/1638882

sudo apt update
sudo apt install openssh-server

检查 ssh 是否启动

sudo systemctl status ssh
sudo systemctl start ssh

sudo ufw allow ssh

如果遇见无法登录的情况 vim /etc/ssh/sshd_config

将PermitRootLogin prohibie-password 修改为：PermitRootLogin yes

sudo systemctl restatus ssh

还有检查用户名大小写的问题！

修改 ssh 端口

vim /etc/ssh/sshd_config.d/port-override.conf

# 确保有这个配置文件
Include /etc/ssh/sshd_config.d/*.conf

Port 2222

检查配置是否生效

sshd -T | grep port

防火墙

sudo ufw allow 2222/tcp

重启 ssh 服务

sudo systemctl restart ssh