1. ping ip地址
ping 28.104.87.140
2. telnet 端口
telnet 28.104.87.140 8080
3. 防火墙
systemctl status firewalld
systemctl stop firewalld
systemctl start firewalld
4. ssh 链接
ssh [email protected]
more /var/log/secure
who /var/log/wtmp
5. 客户端生成秘钥(linux 和 windows)
ssh-keygen -t rsa -C "[email protected]","[email protected]"是你的github账号
ssh-keygen -t rsa
cp id_rsa.pub authorized_keys
6. 将文件传到某一服务器下( 两个服务器之间
scp /root/.ssh/id_rsa.pub [email protected]
7. 在服务器上下载某文件( 两个服务器之间)
scp [email protected]:/root/.ssh/id_rsa.pub /root