Billion 7300N Guía Del Usuario

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5.3.7 Time Schedule 
The Time Schedule supports up to 16 time slots which helps you to manage your Internet 
connection.  In each time profile, you may schedule specific day(s) i.e. Monday through 
Sunday to restrict or allowing the usage of the Internet by users or applications.   
This Time Schedule correlates closely with router’s time, since router does not have a real 
time clock on board; it uses the Simple Network Time Protocol (SNTP) to get the current 
time from an SNTP server from the Internet. Refer to Time Zone for details.  You router time 
should correspond with your local time.  If the time is not set correctly, your Time Schedule 
will not function properly. 
1.  If you disable the NAT option in the WAN-ISP section, the Virtual 
Server function becomes invalid. 
2.  If the DHCP server option is enabled, you have to be very careful in 
assigning the IP addresses of the virtual servers in order to avoid 
conflicts. The easiest way of configuring Virtual Servers is to manually 
assign a static IP address to each virtual server PC, with an address 
that does not fall into the range of IP addresses that are issued by the 
DHCP server. You can configure the virtual server IP address 
manually, but it must still be in the same subnet as the router. 
 
Attention
 
Using port mapping does have security implications, since outside users 
are able to connect to PCs on your network. For this reason you are 
advised to use specific Virtual Server entries just for the ports your 
application requires instead of simply using DMZ or creating a Virtual 
Server entry for “All” protocols, as doing so results in all connection 
attempts to your public IP address accessing the specified PC.