Ubuntu now installs ufw by default, while RHEL/CentOS 7 installs firewalld. While these firewalls are fine in their own right, they interfere with the simpler iptables-only approach this role uses. And I realized on one of my servers that a reboot where firewalld and this role's firewall conflict, it can cause strange behavior.
Therefore I'd like to add the ability (turned off by default, for backwards compatibility and safety) to disable system-supplied firewalls, mostly for convenience.
Ubuntu now installs
ufwby default, while RHEL/CentOS 7 installsfirewalld. While these firewalls are fine in their own right, they interfere with the simpleriptables-only approach this role uses. And I realized on one of my servers that a reboot wherefirewalldand this role's firewall conflict, it can cause strange behavior.Therefore I'd like to add the ability (turned off by default, for backwards compatibility and safety) to disable system-supplied firewalls, mostly for convenience.