An Emergency Policy Change is an urgent request to alter the firewall rule set or VPN connections to a Symantec Managed Firewall, Monitored and Managed Firewall, or Monitored and Managed ISA. In the case of ISA, an Emergency Policy Change can also be used to alter the Antivirus Definitions or Content and URL Filtering Policy of the device. Most Symantec Managed Firewall, Monitored and Managed Firewall, and Monitored and Managed ISA services include a certain number of Emergency Policy Changes per year as part of the service. There is no daily limit on the number of Emergency Policy Changes that can be used. Symantec engineers work on Emergency Policy Changes from the time they are received until completion. Symantec guarantees that Emergency Policy Changes will be completed within three hours of receipt of the request by Symantec. If the client does not have any Emergency Policy Changes, they can be purchased from Symantec at any time.