Microsoft Windows Local Security Authority Subsystem Service (LSASS) is prone to a remote denial-of-service vulnerability. A remote attacker can exploit this issue to cause the affected computer to crash and restart, denying service to legitimate users.
Block external access at the network boundary, unless external parties require service.
If global access isn't needed, block access at the network perimeter to computers hosting the vulnerable operating system.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity such as unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.
Updates are available. Please see the references for details.