Edimax Router BR-6424n User Manual

							 
131
Here are descriptions of every setup items: 
 
Item Name Description 
Protocol  Please select the protocol type of this service: 
TCP or UDP, or ‘Both’. 
Port Range  Please input the port range if this service. For 
a single port number, just input the number of 
service port (like ‘110’).   
 
If this service consists multiple continuous 
ports, you can input ‘110-120’ for port number 
110 to 120, or ’110,115,120’ for port number 
110, 115, and 120. 
 
Click ‘Add’ to add this IP address restriction rule to the list (and back to 
previous page), or click ‘Reset’ to clear all texts in every field. 
 
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.  
						

							 
132
3-5-3-2 URL Blocking 
 
If you want to prevent computers in local network from accessing certain 
website (like pornography, violence, or anything you want to block), you 
can use this function to stop computers in local network from accessing 
the site you defined here. 
 
This function is useful for parents and company managers. 
Please follow the following instructions to set URL blocking parameters: 
Please click ‘Firewall’ menu on the left of web management interface, 
then click ‘URL Blocking’, and the following message will be displayed 
on your web browser: 
 
 
 
Here are descriptions of every setup items: 
 
Item Name Description 
Enable URL Blocking  Check this box to enforce URL Blocking, 
uncheck it to disable URL Blocking. 
URL/Keyword  Input the URL (host name or IP address of 
website, like http://www.blocked-site.com
 or 
http://11.22.33.44
), or the keyword which is  
						

							 
133
contained in URL (like pornography, cartoon, 
stock, or anything). 
Add  Click ‘Add’ button to add the URL / keyword to 
the URL / Keyword filtering table. 
Reset  Click ‘Reset’ to remove the value you inputted 
in URL/Keyword field. 
 
All existing URLs will be displayed in ‘Current URL Blocking Table’: 
 
 
 
If you want to delete a specific URL/Keyword entry, check the ‘select’ 
box of the MAC address you want to delete, then click ‘Delete Selected’ 
button. (You can select more than one MAC addresses). If you want to 
delete all URL/Keyword listed here, please click ‘Delete All’ button, or 
you can also click ‘Reset’ button to unselect all URL/Keywords. 
 
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.  
						

							 
134
3-5-3-3 DoS 
 
Denial of Service (DoS) is a common attack measure, by transmitting a 
great amount of data or request to your Internet IP address and server, the 
Internet connection will become very slow, and server may stop 
responding because it is not capable to handle too much traffics. 
 
This router has a built-in DoS attack prevention mechanism; when you 
activate it, the router will stop the DoS attack for you: 
 
 
 
Here lists four kinds of DoS attacks, please select the type of DoS attack 
you wish this broadband router to protect, and you can select multiple 
types of attacks.   
 
The descriptions of every DoS attack is listed below: 
 
Item Name Description 
Ping of Death  Ping of Death is a special packet, and it will 
cause certain computer to stop responding. 
Check this box and the router will filter this 
kind of packet out. 
Discard Ping From 
WA N  Ping is a common and useful tool to know 
the connection status of a specified remote 
network device, but some malicious intruder 
will try to fill your network bandwidth with a 
lot of PING request data packet, to make your 
internet connection become very slow, even 
unusable. Check this box and the router will 
ignore all inbound PING request, but when you 
activate this function, you will not be able to  
						

							 
135
ping your own router from internet, too. 
Port Scan  Some malicious intruder will try to use a ‘port 
scanner’ to know how many ports of your 
Internet IP address are open, and they can 
collect a lot of valuable information by doing 
so. Check this box and the router will block all 
traffics which are trying to scan your Internet 
IP address. 
Sync Flood  This is another kind of attack, which uses a lot 
of fake connection request to consume the 
memory of your server, and try to make your 
server become unusable. Check this box and 
the router will filter this kind of traffic out. 
 
If you need to specify the details of every DoS attack, please click 
‘Advanced Settings’ button, and the following settings will appear: 
 
 
 
The descriptions of every DoS attack is listed below: 
 
Item Name Description 
Ping of Death  Set the threshold of when this DoS prevention 
mechanism will be activated. Please check the  
						

							 
136
box of Ping of Death, and input the frequency 
of threshold (how many packets per second, 
minute, or hour), you can also input the ‘Burst’ 
value, which means when this number of ‘Ping 
of Death’ packet is received in very short time, 
this DoS prevention mechanism will be 
activated.  
Discard Ping From 
WA N  Check the box to activate this DoS prevention 
mechanism. 
 
Port Scan  Many kind of port scan methods are listed here, 
please check one or more DoS attack methods 
you want to prevent. 
Sync Flood  Like Ping of Death, you can set the threshold 
of when this DoS prevention mechanism will be 
activated. 
 
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.  
						

							 
137
3-5-4 DDNS 
 
DDNS (Dynamic DNS) is a IP-to-Hostname mapping service for those 
Internet users who don’t have a static (fixed) IP address. It will be a 
problem when such user wants to provide services to other users on 
Internet, because their IP address will vary every time when connected to 
Internet, and other user will not be able to know the IP address they’re 
using at a certain time. 
 
This router supports DDNS service of following service providers: 
 
3322 (http://www.3322.org/
) 
DHS (http://www.dhs.org
) 
DynDNS (http://www.dyndns.org
/) 
ODS (http://ods.org
) 
TZO (http://www.tzo.com
/) 
GnuDIP (http://gnudip2.sourceforge.net/
) 
DyNS (http://www.dyns.cx/
) 
ZoneEdit (http://www.zoneedit.com) 
DHIS (http://www.dhis.org/) 
CyberGate (http://cybergate.planex.co.jp/ddns/) 
NS2GO (http://ns.ns2go.com/) 
 
Please go to one of DDNS service provider’s webpage listed above, and 
get a free DDNS account by the instructions given on their webpage. 
After that, you can use the DDNS page to setup DDNS parameters to use 
DDNS service: 
 
  
						

							 
138
Here are descriptions of every setup items: 
 
Item Name Description 
Dynamic DNS If you want to enable DDNS function, please 
select ‘Enabled’; otherwise please select 
‘Disabled’ 
Provider  Select your DDNS service provider here. 
Domain Name Input the domain name you’ve obtained from 
DDNS service provider. 
Account / E-Mail Input account or email of DDNS registration. 
Password / Key Input DDNS service password or key. 
 
If your DDNS provider is ‘DHIS’, the settings will be different: 
 
 
 
Here are descriptions of every setup items: 
 
Item Name Description 
HostID  Please input the HostID you applied during 
DHIS registration. 
ISAddr  Please input the ISAddr you applied during 
DHIS registration. 
Authentication Type  Please select the DHIS user authentication type 
from dropdown menu: password or QRC. 
HostPass  Please input the HostID you applied during 
DHIS registration. 
 
(This field will appear only when  
						

							 
139
authentication type is password). 
AuthP / AuthQ  Please input the AuthP/AuthQ you applied 
during DHIS registration. 
 
(This field will appear only when 
authentication type is QRC). 
 
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.  
						

							 
140
3-5-5 Port Forwarding 
 
This function allows you to redirect a single port or consecutive ports of 
Internet IP address to the same port of the IP address on local network. 
The port number(s) of Internet IP address and private IP address (the IP 
address on local network) must be the same.   
 
If the port number of Internet IP address and private IP address is 
different, please use ‘Virtual Server’ function. 
 
The port forwarding setting page looks like this: 
 
 
 
Here are descriptions of every setup items: 
 
Item Name Description 
Enable Port 
Forwarding Check this box to enable port forwarding, and 
uncheck this box to disable port forwarding. 
Private IP  Input the IP address of the computer on local 
network 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 ‘