- Created `wiki-common.yml` for wiki.cadus.org with DNS settings and git repository configurations.
- Added `www-common.yml` for www.oopen.de including SFTP group creation and root user password.
- Introduced `zapata-alt-common.yml` for zapata-alt.opp.netz with network interface configurations, Samba user reorganize 'host_vars'
- Created handlers for reloading systemd and restarting firewall services.
- Implemented tasks to ensure the existence of configuration directories and files.
- Deployed host-specific and shared configuration files using templates.
- Added scripts for managing IPv4 and IPv6 firewalls.
- Configured systemd service units for ipt-firewall and ip6t-firewall.
- Enabled and started firewall services on system boot.