By looking at the Intrusion logs of my RF600VPN, can I determine what PORT is being scanned by the SNORT report provided by the RF600VPN?

You must enable the firewall log if you want to know all the ports that are being used for scanning by the remote.

To enable firewall log, click on Packet Filters and enable Log packets to the Firewall option.

To view, click on Statistics&Logs, click on Packet Filter, and click on Packet Filter Livelog.