Usage: ufw COMMAND Commands:
enable enables the firewall 开启ufw防火墙
disable disables the firewall 禁用防火墙
default ARG set default policy 设置默认的策略
logging LEVEL set logging to LEVEL 记录级别
allow ARGS add allow rule 添加允许的规则 eg : ufw allow ssh
deny ARGS add deny rule 添加禁止的规则 eg : ufw deny
reject ARGS add reject rule 添加拒绝的规则 eg : ufw reject mysql
limit ARGS add limit rule 添加限制的规则
delete RULE|NUM delete RULE
insert NUM RULE insert RULE at NUM
route RULE add route RULE
route delete RULE|NUM delete route RULE
route insert NUM RULE insert route RULE at NUM
reload reload firewall 重新加载防火墙（不清除规则）
reset reset firewall 重置防火墙 （清除规则）
status show firewall status 防火墙规则列表
status numbered show firewall status as numbered list of RULES #按序号列出规则
status verbose show verbose firewall status
show ARG show firewall report 状态报告
version display version information 展示状态信息 Application profile commands:
app list list application profiles
app info PROFILE show information on PROFILE
app update PROFILE update PROFILE
app default ARG set default application policy