The Defender Security Server (DSS) log is filling up with entries similar to the following:
Wed 26 Sep 2012 13:01:00 Unable to process request - Unknown packet type
Wed 26 Sep 2012 13:01:00 . (+0000) 00
Wed 26 Sep 2012 13:01:13 Unable to process request - Unknown packet type
Wed 26 Sep 2012 13:01:13 . (+0000) 00
This warning is logged when something communicates on a listening Access Node port on the DSS. For example, a 3rd party external monitoring process such as Cisco ACE Load Balancer. Currently, these messages cannot be filtered out.