https://firejail.wordpress.com/
    ! iptables-based
https://github.com/netblue30/firejail
https://github.com/netblue30/firejail/wiki
https://github.com/netblue30/firejail/wiki/Frequently-Asked-Questions

https://firejail.wordpress.com/documentation-2/
https://firejail.wordpress.com/documentation-2/basic-usage/
https://firejail.wordpress.com/2021/01/21/firejail-tips-and-tricks/
https://firejail.wordpress.com/documentation-2/building-custom-profiles/
https://firejail.wordpress.com/documentation-2/linux-capabilities-guide/
https://firejail.wordpress.com/documentation-2/x11-guide/

https://firejail.wordpress.com/features-3/man-firejail/

https://firejail.wordpress.com/blog

https://wiki.gentoo.org/wiki/Firejail
https://wiki.archlinux.org/title/Firejail

profiles
https://github.com/netblue30/firejail/tree/master/etc
https://github.com/netblue30/firejail/tree/master/etc/net
https://github.com/netblue30/firejail/tree/master/ci/check/profiles

cfg
https://github.com/netblue30/firejail/blob/master/etc/firejail.config
templates
https://github.com/netblue30/firejail/blob/master/etc/templates/profile.template

contrib
https://github.com/netblue30/firejail/tree/master/contrib
https://github.com/netblue30/firejail/blob/master/contrib/syscalls.sh
    with strace

whatsnew
https://firejail.wordpress.com/download-2/release-notes/

2023
https://www.youtube.com/watch?v=OWu5RNWjhEc
2015
https://linuxthebest.net/firejail-bezopasnyj-zapusk-potentsialno-uyazvimykh-prilozhenij/
????
https://www.brighteon.com/channels/netblue30
https://www.bitchute.com/channel/netblue30/
https://www.linux.org.ru/articles/desktop/17042789

cli
firejail
    --debug $Program > $PathToOutputFile