[chef] Ports used....

[Ross Mohan < >]

Folks, 

Any pointers on which ports used by chef infrastructure (443 for PEM-chat....for starters)? Or, related, on advice to how to set/manage firewalls around Chef usage? 

Does ohai authenticate/operate solely on 443? Do any Chef Server searches ever use other ports? (Especially higher ports?)

Pointers to RTFM most welcome...just looking for a leg up on which FM to R.

Thanks, 

Ross