init.pp

# Install, configure, and make persistent, iptables.
class iptables (
  $publicports = [],
)
  {
  include
    'iptables::config',
    'iptables::service',
    'iptables::install'

  Class['iptables::install'] ->
  Class['iptables::config'] ~>
  Class['iptables::service']
}