https://firewalld.org/

https://github.com/firewalld/firewalld
    dep: python3-nftables >= 0.9.4

https://firewalld.org/blog/

https://firewalld.org/documentation/
https://firewalld.org/documentation/concepts.html
https://firewalld.org/documentation/architecture.html
    backends: iptables, nft
https://firewalld.org/documentation/configuration/
https://firewalld.org/documentation/configuration/directories.html
https://firewalld.org/documentation/configuration/runtime-versus-permanent.html
https://firewalld.org/documentation/configuration/firewalld-conf.html
https://firewalld.org/documentation/utilities/

https://firewalld.org/documentation/zone/
https://firewalld.org/documentation/zone/predefined-zones.html
https://firewalld.org/documentation/zone/connections-interfaces-and-sources.html
https://firewalld.org/documentation/zone/configuration-of-zones.html
https://firewalld.org/documentation/zone/use-of-zones.html
    !!!
https://firewalld.org/documentation/zone/options.html
    ! accept, reject, drop, ..., nflog
https://firewalld.org/documentation/zone/examples.html

https://firewalld.org/documentation/service/
https://firewalld.org/documentation/service/examples.html
https://firewalld.org/documentation/man-pages/firewalld.service

https://firewalld.org/documentation/ipset/
https://firewalld.org/documentation/ipset/options.html
https://firewalld.org/documentation/ipset/examples.html

https://firewalld.org/documentation/helper/
https://firewalld.org/documentation/helper/options.html
https://firewalld.org/documentation/helper/examples.html
https://firewalld.org/documentation/man-pages/firewalld.helper

https://firewalld.org/documentation/man-pages/firewall-cmd

wiki
https://en.wikipedia.org/wiki/Firewalld
https://fedoraproject.org/wiki/Firewalld
https://en.wikipedia.org/wiki/Netfilter
    !!
    https://netfilter.org/

cfg
https://firewalld.org/documentation/utilities/firewall-config.html

http://www.unixmen.com/iptables-vs-firewalld/
    sudo apt install firewalld
https://computingforgeeks.com/install-and-use-firewalld-on-ubuntu/
http://guoqiao.me/post/2015/0610-vagrant-network-not-working-for-centos-7

sudo systemctl status firewalld.service 
sudo systemctl stop firewalld.service 
sudo systemctl disable firewalld.service

firewall-cmd --zone=public --permanent --add-service=http
firewall-cmd --zone=public --permanent --add-service=https
firewall-cmd –reload

samples:
check network group
show firewall group internet_allowed_zone

if not there add to group
set firewall group network-group internet_allowed_zone network 'host ip/32'

????
https://docs.rockylinux.org/10/guides/security/firewalld/
https://docs.rockylinux.org/10/guides/security/firewalld-beginners/
https://www.linode.com/docs/guides/introduction-to-firewalld-on-centos/
2025
https://www.computernetworkingnotes.com/linux-tutorials/firewalld-rich-rules-explained-with-examples.html
https://www.computernetworkingnotes.com/linux-tutorials/how-to-configure-firewalld-in-linux.html
https://www.computernetworkingnotes.com/linux-tutorials/firewalld-basic-concepts-explained-with-examples.html
2022
https://itsecforu.ru/2022/06/29/%f0%9f%96%a7-%d1%88%d0%bf%d0%b0%d1%80%d0%b3%d0%b0%d0%bb%d0%ba%d0%b0-%d0%bf%d0%be-firewalld/
2018
https://opensource.com/article/18/9/linux-iptables-firewalld