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D-Link DIR-850L User Manual

Wireless Security Mode: Enable WPA/WPA2 Wireless Security (enhanced)

Wi-Fi Protected Access (WPA) is a more advanced and up to date wireless encryption method used today. This is the recommended wireless

security option.

The following parameters will be available for configuration:

Cipher Type:

Select the appropriate cipher type to use here.

Options to choose from are Temporal Key

Integrity Protocol (

TKIP

), Advanced Encryp-

tion Standard (

AES

), and Both (

Auto.

TKIP and

AES

).

Network Key:

Enter the shared secret used here. This secret

phrase needs to be the same on all of the

wireless clients for them to be able to connect

to the wireless network successfully.

Click on the

Save Settings

button to accept the changes made.

Click on the

Don’t Save Settings

button to discard the changes made.

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D-Link DIR-850L User Manual

Section 4 - Security

Wireless Security

This section will show you the different levels of security you can use to protect your data from intruders. The DIR-850L offers the

following types of security:

• WPA2 (Wi-Fi Protected Access 2)

• WPA2-PSK (Pre-Shared Key)

• WPA (Wi-Fi Protected Access)

• WPA-PSK (Pre-Shared Key)

What is WPA?

WPA (Wi-Fi Protected Access), is a Wi-Fi standard that was designed to improve the security features of WEP (Wired Equivalent Privacy).

The 2 major improvements over WEP:

• Improved data encryption through the Temporal Key Integrity Protocol (TKIP). TKIP scrambles the keys using a hashing

algorithm and, by adding an integrity-checking feature, ensures that the keys haven’t been tampered with. WPA2 is

based on 802.11i and uses Advanced Encryption Standard (AES) instead of TKIP.

• User authentication, which is generally missing in WEP, through the extensible authentication protocol (EAP). WEP

regulates access to a wireless network based on a computer’s hardware-specific MAC address, which is relatively simple

to be sniffed out and stolen. EAP is built on a more secure public-key encryption system to ensure that only authorized

network users can access the network.

WPA-PSK/WPA2-PSK uses a passphrase or key to authenticate your wireless connection. The key is an alpha-numeric password between

8 and 63 characters long. The password can include symbols (!?*&_) and spaces. This key must be the exact same key entered on your

wireless router or access point.

WPA/WPA2 incorporates user authentication through the Extensible Authentication Protocol (EAP). EAP is built on a more secure public

key encryption system to ensure that only authorized network users can access the network.

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D-Link DIR-850L 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.

Network Settings

Enter the IP address of the router. The default IP address

is 192.168.0.1.

If you change the IP address, once you click

Save.Settings

,

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

255.255.255.0.

Enter a name for the router.

Enter the Domain name (Optional).

Uncheck the box to transfer the DNS server information

from your ISP to your computers. If checked, your

computers will use the router for a DNS server.

Router IP Address:

Subnet Mask:

Device Name:

Local Domain:

Enable DNS Relay:

Router Settings

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D-Link DIR-850L User Manual

Section 3 - Configuration

DHCP Server Settings

DHCP stands for Dynamic Host Control Protocol. The DIR-850L 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-850L. 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.

Check this 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.

Note:

If you statically (manually) assign IP addresses to your

computers or devices, make sure the IP addresses are outside

of this range or you may have an IP conflict.

The length of time for the IP address lease. Enter the Lease

time in minutes.

If all the computers on the LAN successfully obtain their

IP addresses from the router’s DHCP server as expected,

this option can remain disabled. However, if one of the

computers on the LAN fails to obtain an IP address from the

router’s DHCP server, it may have an old DHCP client that

incorrectly turns off the broadcast flag of DHCP packets.

Enabling this option will cause the router to always broadcast its responses to all clients, thereby working around the problem, at

the cost of increased broadcast traffic on the LAN.

Check this box to allow the DHCP Server to offer NetBIOS configuration settings to the LAN hosts. NetBIOS allow LAN hosts to

discover all other computers within the network, e.g. within Network Neighborhood.

If NetBIOS announcement is switched on, it will cause WINS information to be learned from the WAN side, if available. Turn this

setting off to configure manually.

Enable DHCP

Server:

DHCP IP Address

Range:

DHCP Lease Time:

Always

Broadcast:

NetBIOS

Announcement:

Learn NetBIOS

from WAN:

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D-Link DIR-850L User Manual

Section 3 - Configuration

NetBIOS Scope:

NetBIOS Node:

WINS IP

Address:

This is an advanced setting and is normally left blank. This allows the configuration of a NetBIOS ‘domain’ name under which network

hosts operate. This setting has no effect if the ‘Learn NetBIOS information from WAN’ is activated.

This field indicates how network hosts are to perform NetBIOS name registration and discovery. H-Node, this indicates a Hybrid-State

of operation. First WINS servers are tried, if any, followed by local network broadcast. This is generally the preferred mode if you

have configured WINS servers. M-Node (default), this indicates a Mixed-Mode of operation. First Broadcast operation is performed

to register hosts and discover other hosts, if broadcast operation fails, WINS servers are tried, if any. This mode favours broadcast

operation which may be preferred if WINS servers are reachable by a slow network link and the majority of network services such as

servers and printers are local to the LAN. P-Node, this indicates to use WINS servers ONLY. This setting is useful to force all NetBIOS

operation to the configured WINS servers. You must have configured at least the primary WINS server IP to point to a working WINS

server. B-Node, this indicates to use local network broadcast ONLY. This setting is useful where there are no WINS servers available,

however, it is preferred you try M-Node operation first. This setting has no effect if the ‘Learn NetBIOS information from WAN’ is

activated.

Enter your WINS Server IP address(es).