iptables-F 后 SSH 连接断开
最近回收利用一台被征用做邮件服务的服务器,重新部署新的业务。 清理了所有的安装软件和目录文件后,调整了网络安全组规则,仅开放所需端口。 看了下防火墙的配置: # iptables -L Chain INPUT (policy DROP) target prot opt source destination ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT all -- anywhere anywhere ACCEPT icmp -- anywhere anywhere icmp echo-request ACCEPT tcp -- anywhere anywhere tcp dpt:ssh ACCEPT tcp -- anywhere anywhere tcp dpt:http ACCEPT tcp -- anywhere anywhere tcp dpt:https ACCEPT tcp -- anywhere anywhere tcp dpt:smtp ACCEPT tcp -- anywhere anywhere tcp dpt:pop3 ACCEPT tcp -- anywhere anywhere tcp dpt:pop3s ACCEPT tcp -- anywhere anywhere