D-Link Router DIR-300 User Manual

							
31D-Link DIR-300 User Manual
Section 3 - Configuration
This section will allow you to change the local network settings of the router and to configure the DHCP settings.
LAN Setup
Enter  the  IP  address  of  the  router.  The  default  IP 
address is 1.168.0.1.
If you change the IP address, once you click Apply, 
you  will  need  to  enter  the  new  IP  address  in  your 
browser to get back into the configuration utility.
Enter the Subnet Mask. The default subnet mask is 
...0.
Enter the Domain name (Optional).
Check the box to transfer the DNS server information 
from your ISP to your computers. If unchecked, your 
computers will use the router for a DNS server.
Router IP Address:IP Address:
Default Subnet 
Mask:
Local Domain 
Name:
Enable DNS Relay:
Refer to the next page for DHCP information. 
						

							
3D-Link DIR-300 User Manual
Section 3 - Configuration
Check the box to enable the DHCP server on your 
router. Uncheck to disable this function.
Enter  the  starting  and  ending  IP  addresses  for  the 
DHCP server’s IP assignment.
The length of time for the IP address lease. Enter the 
Lease time in minutes.
Enable DHCP 
Server:
DHCP IP
Address Range:
DHCP Lease
 Time:
DHCP Server Settings
DHCP  stands  for  Dynamic  Host  Control  Protocol.  The 
DIR-300 has a built-in DHCP server. The DHCP Server 
will automatically assign an IP address to the computers on 
the LAN/private network. Be sure to set your computers 
to  be  DHCP  clients  by  setting  their  TCP/IP  settings  to 
“Obtain  an  IP  Address  Automatically.”  When  you  turn 
your computers on, they will automatically load the proper 
TCP/IP  settings  provided  by  the  DIR-300.  The  DHCP 
Server  will  automatically  allocate  an  unused  IP  address 
from the IP address pool to the requesting computer. You 
must  specify  the  starting  and  ending  address  of  the  IP 
address pool. 
						

							
33D-Link DIR-300 User Manual
Section 3 - Configuration
This section will allow you to configure, update, and maintain the correct time on the internal system clock.
Time and Date
Select the Time Zone from the drop-down menu.
Ticking this checkbox enables Daylight Saving time. 
Click Sync. your computer’s time settings to copy 
your PC’s time settings.
Tick the “Automatically synchronize with D-Link’s 
Internet time server” checkbox and then use the drop-
down menu to select an NTP Server. NTP is short for 
Network Time Protocol. NTP synchronizes computer 
clock times in a network of computers. 
To manually input the time, enter the values in these 
fields for the Year, Month, Day, Hour, Minute, and 
Second. Click Save Settings. 
Time Zone:
Enable
 Daylight
 Saving:
NTP
Server
Used:
Manual: 
						

							
3D-Link DIR-300 User Manual
Section 3 - Configuration
This feature allows you to create a list of websites that you want to ei\
ther allow or deny users access.
Parental Control
Select Turn  Parental  Control  OFF, Turn  Parental 
Control ON and ALLOW computers access to ONLY 
these sites, or Turn Parental Control ON and DENY 
computers access to ONLY these sites.
Enter the keywords or URLs that you want to block 
(or allow). Any URL with the keyword in it will be 
blocked.
The schedule of time when the parental control filter 
will be enabled. The schedule may be set to Always, 
which  will  allow  the  particular  service  to  always 
be  enabled. You  can  create  your  own  times  in  the 
Maintenance > Schedules section.
Configure
 Parental
 Control:
Website URL:
Schedule: 
						

							
3D-Link DIR-300 User Manual
Section 3 - Configuration
Port Forwarding
This will allow you to open a single port or a range of ports.
Check the box to enabled the rule. 
Enter a name for the rule.
Enter the IP address of the computer on your local 
network that you want to allow the incoming service 
to.
Enter the port or ports that you want to open. If you 
want to open one port, enter the same port in both 
boxes.
Select TCP, UDP, or Any
Rule:
Name:
IP Address:
Start Port/
End Port:
Traffic Type: 
						

							
36D-Link DIR-300 User Manual
Section 3 - Configuration
Application Rules
Some applications require multiple connections, such as Internet gaming, video conferencing, Internet telephony and others. These 
applications  have  difficulties  working  through  NAT  (Network Address Translation).  Special Applications  makes  some  of  these 
applications work with the DIR-300.
Check the box to enable the rule. 
Enter a name for the rule.
This is the port used to trigger the application. It can 
be either a single port or a range of ports.
This is the port number on the WAN side that will 
be used to access the application. You may define a 
single port or a range of ports. You can use a comma 
to add multiple ports or port ranges.
Select TCP, UDP, or Any.
Rule:
Name:
Trigger Port:
Firewall Port:
Traffic Type: 
						

							
3D-Link DIR-300 User Manual
Section 3 - Configuration
Access Control
S e l e c t  Tu r n   M A C   F i l t e r i n g   O F F,  Tu r n   M A C 
Filtering ON and ALLOW computers listed to access 
the network, or Turn MAC Filtering ON and DENY 
computers listed to access teh network. 
Enter the MAC address you would like to filter.
To find the MAC address on a computer, please refer 
to the Networking Basics section in this manual.
Select a DHCP client from the drop-down menu and 
click the arrow to copy that MAC Address. 
The schedule of time when the network filter will be 
enabled. The schedule may be set to Always, which 
will allow the particular service to always be enabled. 
You can create your own times in the Maintenance 
> Schedules section.
Configure MAC 
Filter:
MAC Address: 
DHCP Client
 List:
Schedule:
Use MAC (Media Access Control) Filters to allow or deny LAN (Local Area Network) computers by their MAC addresses from 
accessing the Network. You can either manually add a MAC address or select the MAC address from the list of clients that are 
currently connected to the Broadband Router. 
						

							
38D-Link DIR-300 User Manual
Section 3 - Configuration
Check this to enable SPI.
Check this box to enable DMZ.
Enter the IP address of the computer you would like 
to open all ports to.
Choose a name for the firewall rule.
Select to Allow or Deny transport of the data packets 
according to the criteria defined in the rule. 
The  Source/Destination  is  the  TCP/UDP  port  on 
either the LAN or WAN side.
Click Add New to access the Schedules window. See 
Maintenance>Schedules for more information.
Enter a beginning and ending IP address.
Select  the  transport  protocol  that  will  be  used  for 
the filter rule.
Enter the desired port range for the filter rule.
Enable DMZ 
Host:
DMZ IP Address:
Name:
Action:
Source/Dest:
Schedule:
IP Address:
Protocol:
Port Range:
Firewall & DMZ
This section will allow you to set up a DMZ host and to set up firewall rules.
If you have a client PC that cannot run Internet applications properly from behind the DIR-300, then you can set the client up for 
unrestricted Internet access. It allows a computer to be exposed to the Internet. This feature is useful for gaming purposes. Enter 
the IP address of the internal computer that will be the DMZ host. Adding a client to the DMZ (Demilitarized Zone) may expose 
your local network to a variety of security risks, so only use this opti\
on as a last resort.
 Enable SPI:    
						

							
3D-Link DIR-300 User Manual
Section 3 - Configuration
Set the transmit power of the antennas.
Beacons  are  packets  sent  by  an Access  Point  to  synchronize  a 
wireless network. Specify a value. 100 is the default setting and 
is recommended. 
This  value  should  remain  at  its  default  setting  of 2346.  If 
inconsistent  data  flow  is  a  problem,  only  a  minor  modification 
should be made.
The  fragmentation  threshold,  which  is  specified  in  bytes, 
determines whether packets will be fragmented. Packets exceeding 
the 36 byte setting will be fragmented before transmission. 2346 
is the default setting. 
(Delivery Traffic Indication Message) 1 is the default setting. A 
DTIM is a countdown informing clients of the next window for listening t\
o broadcast and multicast messages.
Select Short or Long Preamble. The Preamble defines the length of the CRC block (Cyclic Redundancy Check is a common technique 
for detecting data transmission errors) for communication between the wireless router and the roaming wireless network adapters. Auto 
is the default setting. Note: High network traffic areas should use the shorter preamble type.
CTS  (Clear  To  Send)  is  a  function  used  to  minimize  collisions  among  wireless  devices  on  a  wireless  local  area  network 
(LAN).  CTS  will  make  sure  the  wireless  network  is  clear  before  a  wireless  client  attempts  to  send  wireless  data.  Enabling 
CTS  will  add  overhead  and  may  lower  wireless  through  put. None:  CTS  is  typically  used  in  a  pure  80 .11g  environment.  If 
CTS  is  set  to  “None”  in  a  mixed  mode  environment  populated  by  80 .11b  clients,  wireless  collisions  may  occur  frequently.  
Always: CTS  will  always  be  used  to  make  sure  the  wireless  LAN  is  clear  before  sending  data. Auto:  CTS  will  monitor  the  wireless 
network and automatically decide whether to implement CTS based on the amount of traffic and collisions that occurs on the wireless 
network.
Tick this checkbox to restrict access to 80.11g devices only.
Transmit Power:
Beacon
 interval:
RTS Threshold:
Fragmentation:
DTIM Interval:
Preamble Type:
CTS Mode:
802.11g Only 
Mode:
Advanced Wireless
This window allows you to change the behavior of the 80.11g wireless radio from the standard settings. Please be aware that any 
changes to the factory default settings may adversely affect the behavior of your network.   
						

							
0D-Link DIR-300 User Manual
Section 3 - Configuration
To  use  the  Universal  Plug  and  Play  (UPnP™) 
f e a t u r e   t i c k   t h i s   c h e c k b o x .   U P N P  p r o v i d e s 
compatibility with networking equipment, software 
and peripherals.
Unchecking the box will not allow the DIR-300 to 
respond to Pings. Blocking the Ping may provide 
some  extra  security  from  hackers.  Tick  this 
checkbox to allow the WAN port to be “Pinged”.
You  may  set  the  port  speed  of  the  WAN  port  to 
10Mbps, 100Mbps,  or 10/100Mbps  Auto.  Some 
older  cable  or  DSL  modems  may  require  you  to 
set the port speed to 10Mbps.
Gaming  mode  allows  a  form  of  pass-through  for 
certain  Internet  Games.  If  you  are  using  Xbox, 
Playstation or a PC, make sure you are using the 
latest firmware and Gaming Mode is enabled. To 
utilize Gaming Mode, click the box. If you are not 
using a Gaming application, it is recommended that 
you Disable Gaming Mode.
Enable UPnP:
Enable WAN
 Ping Respond:
WAN Port 
Speed:
Enable Gaming 
Mode:
Advanced Network
This window allows you to change the LAN settings. Please be aware that any changes to the factory default settings may affect 
the behavior of your network.