Ubuntu防火墙
常用参数
查看状态,如果有规则则显示ufw status状态: 激活至 动作 来自- -- --8000 ALLOW Anywhere 22 ALLOW Anywhere 8000 (v6) ALLOW Anywhere (v6) 22 (v6) ALLOW Anywhere (v6) 开启/关闭ufw enable ufw disable允许22端口连接ufw allow 22查看规则并显示序号[root:~]# ufw status numbered状态: 激活 至 动作 来自 - -- --[ 1] 8000 ALLOW IN Anywhere [ 2] 22 ALLOW IN Anywhere [ 3] 8000 (v6) ALLOW IN Anywhere (v6) [ 4] 22 (v6) ALLOW IN Anywhere (v6) 删除规则ufw delete 2查看版本:[root:~]# ufw versionufw 0.35Copyright 2008-2015 Canonical Ltd.
centos防火墙
firewall-cmd --list-services #查看开放的服务
firewall-cmd --list-ports ##c
##状态
firewall-cmd --state