Synopsis
PVS has just detected a client sending the server a code '0D' message.
Description
SCADA Alert - Distributed Network Protocol v3 'Cold Restart' alert. The remote host is running the Distributed Network Protocol version 3. This protocol is common on SCADA networks. NNM has just detected a client sending the server a code '0D' message. This message instructs the remote server to do a cold restart. That is, the server will be unavailable for some time as it restarts and runs all power-up tests.
Solution
If the PLC server supports it, disable 'Cold Restarts' except from trusted systems. Otherwise, ensure that SCADA network is only accessible by trusted hosts.
