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安装ufw
sudo apt update
sudo apt install ufw
开启防火墙
ufw enable
关闭防火墙
ufw disable
查看策略：
ufw status verbose
ufw status numbered
恢复默认策略：
ufw default deny incoming
ufw default allow outgoing
ufw default reject routed
重置UFW（将删除所有自定义策略并关闭UFW）
ufw reset
添加允许连接的商端口：
ufw allow [port]
放行指定范围的端口：
ufw allow 10010:10086/tcp
ufw allow 10010:10086/udp
允许指定ip访问
# 放行ip
ufw allow 221.123.1.1
ufw allow 221.123.1.1 to any port 22
# 放行ip段
ufw allow 221.123.1.0/24
ufw allow 221.123.1.0/24 to any port 22
拒绝连接
ufw deny http
ufw deny from 221.123.1.1
删除规则
# 按编号删除
ufw delete [num]
# 按实际规则删除
ufw delete allow http
# or
ufw delete allow 80版权属于: 三三世界-百宝箱
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本文最后更新于2022年05月01日 ，已超过748天没有更新，若内容或图片失效，请留言反馈。
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@ 权限问题，试试sudo 再加命令。
你好提示Permission denied 怎么办啊