EverFocus DVR EDR810M - Manual (Page 116)

 The next step is to open ports within your router. Go to Virtual Server in the router.
Example1:
Protocol Type - The protocol used for the virtual service.
Public Port - The port number on the WAN (Wide Area Network) side that will be used to
access the virtual service.
Private Port - The port number of the service used by the Private IP computer.
Schedule - The schedule of time when the virtual service will be enabled.
The schedule may be set to Always, which will allow the particular service to always be
enabled. If it is set to Time, select the time frame for the service to be enabled. If the system
time is outside of the scheduled time, the service will be disabled.
Virtual Server - Select Enabled or Disabled