FSSO Agent Based, is Traffic secure from agent to collector to Fortigate?

Hi,

We have setup FSSO using the DC agent based method and have a collector Agent connected to our Fortigate. All working as per the documentation.

However we have been asked a simple question that I can't find a clear answer on so far.

Is the traffic sent from the DC Agents to the Collector Agent encrypted/secure? Also the same for the traffic from the Collector Agent to the Fortigate?

The docs mention the ports used;

We need to tick off that the traffic, as it contains user information is not floating through the network in a way that could be compromised.

Anyone have an insight in to this, it would be interesting and big help.

Thanks,

CD