debian 防火墙命令 nft

参考链接：nftables

# which nft
/usr/sbin/nft

# dpkg -S /usr/sbin/nft
nftables: /usr/sbin/nft

# dpkg -L nftables
/etc/nftables.conf
/lib/systemd/system/nftables.service
/usr/sbin/nft
/usr/share
...

# systemctl status nftables
● nftables.service - nftables
   Loaded: loaded (/lib/systemd/system/nftables.service; enabled; vendor preset: enabled)
   Active: active (exited) since Tue 2022-08-30 15:44:07 CST; 1h 9min ago

# 查看规则
# nft list ruleset -nn

# 修改建议走配置文件，修改后重启服务
vi /etc/nftables.conf
systemctl restart nftables