NOM 
   update-security-group - Mettre à jour un groupe de sécurité
SYNTAXE 
   cf update-security-group SECURITY_GROUP PATH_TO_JSON_RULES_FILE
   The provided path can be an absolute or relative path to a file.
   It should have a single array with JSON objects inside describing the rules.
   Valid json file example:
   [
     {
       "protocol": "tcp",
       "destination": "10.0.11.0/24",
       "ports": "80,443",
       "description": "Allow http and https traffic from ZoneA"
     }
   ]
TIP: Changes will not apply to existing running applications until they are restarted.
VOIR AUSSI 
   restage, security-groups