Before understanding the "CCCam" half of the equation, let’s break down SkyNet HD.
Create a reader in oscam.server:
label = skynet_server
protocol = cccam
device = yourserver.dyndns.org,12000
user = skynet_client
password = strongpass
group = 1
cccversion = 2.3.0
cccmaxhops = 1
inactivitytimeout = 30
Add to OSCam reader:
blockemm-unknown = 1
blockemm-u = 1
blockemm-s = 1
blockemm-g = 1
Prevents card updates from clients.