Edimax Router BR-6574n User Manual

							3-5-2 NAT 
 
Network address translations solve the problem if sharing a single IP 
address to multiple computers. Without NAT, all computers must be 
assigned with a valid Internet IP address to get connected to Internet, but 
Internet service providers only provide very few IP addresses to every 
user. Therefore it’s necessary to use NAT technology to share a single 
Internet IP address to multiple computers on local network, so everyone 
can get connected to Internet.   
 
This broadband router supports four types of NAT functions, and the 
instructions of these functions will be given below. 
 
3-5-2-1 Virtual Server 
 
This function allows you to redirect a port on Internet IP address (on 
WAN port) to a specified port of an IP address on local network, so you 
can setup an Internet service on the computer on local network, without 
exposing it on Internet directly. You can also build many sets of port 
redirection, to provide many different Internet services on different local 
computers via a single Internet IP address. 
 
  
						

							Here are descriptions of every setup items: 
 
Item Name Description 
Enable Virtual Server  Check this box to enable virtual server, and 
uncheck this box to disable virtual server. 
Private IP  Input the IP address of the computer which 
provides Internet service. 
Computer name  All computer names found by this broadband 
router on local network will be listed here. You 
can select the computer name and click ‘
						

							When you finished with the settings in this page, you can click ‘Apply’ 
button to save changes you made in this page, or you can click ‘Cancel’ 
to discard changes. After you click ‘Apply’ button, you’ll see the 
following messages: 
 
 
 
Please click ‘Apply’ to save changes you made and restart the broadband 
router, this requires about 30 seconds and the broadband router will stop 
responding (this is normal and is not malfunction). You can reconnect to 
this broadband router and continue on other settings later.  
						

							3-5-2-2 Special Applications 
 
Some applications require more than one connection a time; these 
applications won’t work with simple NAT rules. In order to make these 
applications work, you can use this function to let these applications 
work. 
 
 
 
Here are descriptions of every setup items: 
 
Item Name Description 
Enable    Check this box to enable support for special 
applications, and uncheck this box to disable 
this support. 
IP Address  Input the IP address of the computer which is 
going to use the special application. 
Computer name  All computer names found by this broadband 
router on local network will be listed here. You 
can select the computer name and click ‘
						

							single value, or a range (like 20-50). If you 
need to input more than one port number and 
they’re not contiguous, list all port numbers 
here and separate them by comma ( , ). If the 
application does not use TCP port, leave it 
blank. 
UDP Port to Open)  Input the UDP port number required by the 
special application, the port number can be a 
single value, or a range (like 20-50). If you 
need to input more than one port number and 
they’re not contiguous, list all port numbers 
here and separate them by comma ( , ). If the 
application does not use UDP port, leave it 
blank. 
Comment  You can input any text here to help you 
remember the purpose of this item. This is 
optional.  
Select Game  This router comes with a numerous port 
mapping settings of network games. If the 
game you wish to set is listed here, you can 
select it from dropdown menu.   
 
After a game is selected, click ‘Add’ (the one 
next to ‘Select Game’ dropdown list) to add the 
connection parameters to all respective fields. 
Add  Click this button to add a new port mapping 
rule to special applications table. 
Reset  Click this button to remove all values in every 
field. 
 
All existing special application mappings will be displayed in this page. 
To delete one or more mappings, check the box of the mapping, then 
click ‘Delete Selected’ button to remove the mapping. To delete all 
existing mappings, click ‘Delete All’ button. If you want to uncheck all 
boxes, click ‘Reset’. 
  
						

							When you finished with the settings in this page, you can click ‘Apply’ 
button to save changes you made in this page, or you can click ‘Cancel’ 
to discard changes. After you click ‘Apply’ button, you’ll see the 
following messages: 
 
 
 
Please click ‘Apply’ to save changes you made and restart the broadband 
router, this requires about 30 seconds and the broadband router will stop 
responding (this is normal and is not malfunction). You can reconnect to 
this broadband router and continue on other settings later.  
						

							3-5-2-3 Firewall 
 
This broadband router supports several firewall functions which will help 
you to protect your network and computer. In this chapter, instructions for 
using these functions will be given, so you can utilize these functions to 
protect your network from hackers and malicious intruders. 
 
3-5-2-3-1 Access  Control   
 
By using access control, you can restrict your computers from accessing 
improper website, or using disallowed applications. You can even only 
allow computers with certain MAC address to access the network, or 
deny the computers in the list from accessing your network. 
 
 
 
  Here are descriptions of every setup items: 
 
Item Name Description 
Enable MAC Filtering  Check this box to enable MAC address based 
filtering, and please select ‘Deny’ or ‘Allow’ to 
decide the behavior of MAC filtering table. If 
you select deny, all MAC addresses listed in 
filtering table will be denied from connecting 
to the network; if you select allow, only MAC 
addresses listed in filtering table will be able to 
connect to the network, and rejecting all other  
						

							network devices. 
Client PC MAC 
address Please input the MAC address of computer or 
network device here, dash ( - ) or colon ( : ) are 
not required. (i.e. If the MAC address label of 
your wireless device indicates 
‘aa-bb-cc-dd-ee-ff ’ or ‘aa:bb:cc:dd:ee:ff ’, just 
input ‘aabbccddeeff ’ 
Computer Name  All computer names found by this broadband 
router on local network will be listed here. You 
can select the computer name and click ‘
						

							All MAC address entries will be listed in this page: 
  
 
 
To delete one or more entries listed here, please check the box of the 
mapping entry (under ‘Select’), and click ‘Delete Selected’ button.   
 
If you wish to delete all mapping entries, click ‘Delete All’ button. To 
deselect all checked boxes, click ‘Reset’ button. 
 
If you wish to use IP address-based filtering, please use ‘IP Filtering 
Table’ in this page: 
 
 
 
Please check ‘Enable IP Filtering Table’ box first, and select ‘Deny’ or 
‘Allow’ to decide the behavior of IP filtering table (Deny the access of IP 
addresses in the list, or allow the access of IP addressees in the list). You 
have to click ‘Add PC’ button to add a new IP address to the list: 
 
  
						

							Here are descriptions of every setup items: 
 
Item Name Description 
Client PC Description  Please input any text to describe this IP 
address, up to 16 alphanumerical characters. 
Client PC IP address  Please input the starting IP address in the left 
field, and input the end IP address in the right 
field to define a range of IP addresses, or just 
input the IP address in the left field to define a 
single IP address. 
 
You also have to select the type of Internet services that will be applied to 
this access control rule from the list: 
 
 
 
You can select multiple services here. If you wish to deny or allow all 
services of certain IP address(es), please select both ‘TCP’ and ‘UDP’.