Emergency Mode is defined as a service state in which the Dome9 Agent is unable to communicate with Dome9 Central. Reasons could be: DDOS on Dome9, DDOS on your server and/or ISP network, Dome9 downtime, server networking issues etc.
To make sure server admins could access their server regardless of such interruption, we have defined an Emergency Mode, and a custom, per server Emergency Mode Timeout.
Emergency Mode policy opens all "On-Demand" ports of the normal policy, to be accessible from the Internet. For example, if an agent's policy is to allow HTTP (TCP 80) from anywhere and SSH (TCP 22) only On-Demand, then the Emergency Security Policy is to allow both HTTP and SSH from anywhere.
Emergency Mode takes into effect after X minutes of disconnect between the agent and Dome9 Central, as defined in each agent Emergency Mode Timeout setting.
Note: The Dome9 Agent will attempt to re-establish communication, indefinitely, with Dome9 Central. Once communication is re-established, the Agent will retrieve the current policy and end Emergency Mode, and would restart the Emergency Mode timeout timer