We recently had a Port Scan done on our external IP Addresses. One of those IP Addresses scanned was our Concentrator 3000. The report came back with the following TCP ports being open on the Concentrator 3000 - 80, 443, 1723, 10000, 10001, 10002, 10003, 10004, and 10009. I am unsure if it is necessary to have any or all of these open. The Concentrator 3000 is in front of our ASA5520.
Thanks.