1.检查防火墙是否关闭 (1)切换到root用户 (2)查看防火墙状态 service iptables status 这是没有关闭 (3)设置关闭 service iptables stop 2.检查selinux是否关闭 more /etc/sysconfig/selinux 图为未关闭,修改为下图 3.修改静态IP地址 more /etc/sysconfig/network-scripts/ifcfg-eth0 先查看 vim /etc/sysconfig/network-script
官方:https://www.ssh.com/ssh/ The SSH protocol uses encryption to secure the connection between a client and a server. All user authentication, commands, output, and file transfers are encrypted to protect against attacks in the network. 密钥类型包括rsa和dsa,