psad configuration

Configure psad, see the salt mc_psad / psad functions module to know which option to configure in pillar.

Pillar key: makina-states.services.firewall.psad

Settings key: makina-states.services.firewall.psad

Eg:

makina-states.services.firewall.psad: true
makina-states.services.firewall.psad.alertdest: sysadmin@goo.com
makina-states.services.firewall.psad.hostname: bar.goo.com