From  here

http://www.zenoss.org/forum/461

Create a new Key for server applications, then add the IP’s (example below)

Issue #1: change 0.0.0.0/24 to 0.0.0.0/0
Issue #2: change 10.2.1.191/24 to your public ip change (directions below).

Go to www.whatismyip.com, lets say your ip is 55.55.55.55, then change it to 55.55.55.0/24

Make sense?