D-Link Router DIR-855 User Manual

							iD-Link DIR-855 User Manual
D-Link reserves the right to revise this publication and to make changes in the content hereof without obligation to notify any person 
or organization of such revisions or changes.
Manual Revisions
Trademarks
D-Link and the D-Link logo are trademarks or registered trademarks of D-Link Corporation or its subsidiaries in the United States or 
other countries. All other company or product names mentioned herein are trademarks or registered trademarks of their respective 
companies.
Copyright © 2008-2009 by D-Link Systems, Inc.
All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written permission from 
D-Link Systems, Inc.
RevisionDateDescription
1.0November 13, 2007DIR-855 Revision A1 with Firmware version 1.00
1.1April 23, 2008Updated warranty information
1.2October 6, 2009Added SharePort USB Network Utility
1.3July 7, 2009Advanced DNS and CAPTCHA
Preface 
						

							iiD-Link DIR-855 User Manual
Table of Contents
Preface ...............................................................i
Manual Revisions ...............................................................i
Trademarks  ........................................................................\
i
Product Overview ...................................................1
Package Contents ..............................................................1
System Requirements  .......................................................2
Introduction .......................................................................3
Features  ........................................................................\
.....4
Hardware Overview............................................................5
Connections  ................................................................5
LEDs  ........................................................................\
...6
Installation ...........................................................7
Before you Begin  ...............................................................7
Wireless Installation Considerations ..................................8
Network Diagram ...............................................................9
Connect to Cable/DSL/Satellite Modem  ...........................10
Connect to Another Router ..............................................11
Getting Started  ................................................................13
Configuration  ......................................................14
Web-based Configuration Utility ......................................14
Setup Wizard .............................................................15
Manual Configuration  ................................................19
Dynamic (Cable)  ...................................................19
PPPoE (DSL).........................................................20
PPTP .....................................................................21
L2TP  .....................................................................23
Static (assigned by ISP) ........................................25
3G Mobile Connection ...........................................26
Wireless Settings  ......................................................27
802.11n/g (2.4GHz)  ..............................................27
802.11n/a (5GHz)..................................................29
Network Settings .......................................................31
LAN Settings  .........................................................31
DHCP Server Settings  ...........................................32
DHCP Reservation .................................................33
USB Settings  .............................................................34
Virtual Server  ............................................................35
Port Forwarding ........................................................37
Application Rules  ......................................................38
QoS Engine  ...............................................................39
Network Filters ..........................................................40
Access Control ..........................................................41
Access Control Wizard  ..........................................41
Website Filters  ..........................................................44
Inbound Filters ..........................................................45
Firewall Settings ........................................................46
Application Level Gateway Configuration  ..................47
Routing .....................................................................48
Advanced Wireless Settings ......................................49
802.11n/g (2.4GHz)  ..............................................49
802.11n/a (5GHz)..................................................50
WISH Settings ...........................................................51
Table of Contents 
						

							iiiD-Link DIR-855 User Manual
Table of Contents
Advanced Network Settings ......................................53
UPnP .....................................................................53
Internet Ping Block................................................53
Internet Port Speed  ...............................................53
Multicast Streams  .................................................53
Administrator Settings  ..............................................54
Change Password  .................................................54
Remote Management ............................................54
Time Settings  ............................................................55
SysLog ......................................................................56
Email Settings  ...........................................................57
System Settings ........................................................58
Update Firmware .......................................................59
DDNS  ........................................................................\
60
System Check  ...........................................................61
Schedules  .................................................................62
Device Information ....................................................63
Log ........................................................................\
....64
Stats  ........................................................................\
..65
Internet Sessions  ......................................................66
Wireless ....................................................................67
WISH  ........................................................................\
67
Support .....................................................................68
Wireless Security  .................................................69
What is WPA?  .................................................................69
Wireless Security Setup Wizard .......................................70
Add Wireless Device with WPS Wizard............................72
Configure WPA-Personal (PSK)  ......................................73
Configure WPA-Enterprise (RADIUS) ..............................74
Connect to a Wireless Network  .................................76
Using Windows Vista® .....................................................76
Configure Wireless Security  ......................................77
Connect Using WCN 2.0 in Windows Vista®  ....................79
Using Windows® XP  ........................................................80
Configure WPA-PSK  .................................................81
Troubleshooting ...................................................83
Wireless Basics  ...................................................87
What is Wireless? ............................................................88
Tips  ........................................................................\
.........90
Wireless Modes ...............................................................91
Networking Basics  ................................................92
Check your IP address .....................................................92
Statically Assign an IP address  ........................................93
Technical Specifications  .........................................94 
						

							1D-Link DIR-855 User Manual
Section 1 - Product Overview
Product Overview
Note: Using a power supply with a different voltage rating than the one includ\
ed with the DIR-855 will cause damage and void the warranty for this pro\
duct.
D-Link DIR-855 Xtreme N™ 
Duo™ Router
Power Adapter
Ethernet Cable
CD-ROM
Stand
Package Contents 
						

							2D-Link DIR-855 User Manual
Section 1 - Product Overview
Network Requirements
• An Ethernet-based Cable or DSL modem
• IEEE 802.11n-draft or 802.11g wireless clients
• IEEE 802.11a wireless clients
• 10/100/1000 Ethernet
Web-based Configuration Utility 
Requirements
Computer with the following:
•  Windows®,  Macintosh,  or  Linux-based  operating 
system 
• An installed Ethernet adapter
Browser Requirements:
• Internet Explorer 6.0 or higher
• Firefox 3.0 or higher
• Safari 3.0 or higher 
Windows® Users: Make sure you have the latest version of Java 
installed. Visit www.java.com to download the latest version.
CD Installation Wizard 
Requirements
Computer with the following:
• Windows® XP with Service Pack 2 or Vista®
• An installed Ethernet adapter
• CD-ROM drive
System Requirements 
						

							3D-Link DIR-855 User Manual
Section 1 - Product Overview
Introduction
TOTAL PERFORMANCE
Combines award winning router features and IEEE 802.11a/Draft 802.11n wi\
reless technology to provide the best wireless performance
TOTAL SECURITY
The most complete set of security features including Active Firewall and\
 WPA2 to protect your network against outside intruders
TOTAL COVERAGE
Provides greater wireless signal rates even at farther distances for bes\
t-in-class Whole Home Coverage.
ULTIMATE PERFORMANCE
The D-Link Xtreme N™ Duo™ router (DIR-855) is a draft 802.11n/802.11a compliant device that delivers real world performance of up to 14x 
faster than an 802.11g wireless connection (also faster than a 100Mbps wired Ethernet connection). Create a secure wireless network to share 
photos, files, music, video, printers, and network storage throughout your home. Connect the DIR-855 router to a cable or DSL modem and 
share your high-speed Internet access with everyone on the network. In addition, this Router includes a Quality of Service (QoS) engine that 
keeps digital phone calls (VoIP) and online gaming smooth and responsi\
ve, providing a better Internet experience.
EXTENDED WHOLE HOME COVERAGE
Powered byXtreme N™ Duo™ technology, this high performance router provides superior Whole Home Coverage while reducing dead spots. The 
router is designed for use in bigger homes and for users who demand higher performance networking. Add a Xtreme N™ notebook or desktop 
adapter and stay connected to your network from virtually anywhere in yo\
ur home.
TOTAL NETWORK SECURITY
The Xtreme N™ Duo™ router supports all of the latest wireless security features to prevent unauthorized access, be it from over the wireless 
network  or  from  the  Internet.  Support  for  WPA  and  WEP  standards  ensure  that  you’ll  be  able  to  use  the  best  possible  encryption  method, 
regardless of your client devices. In addition, this router utilizes dual active firewalls (SPI and NAT) to prevent potential attacks from across 
the Internet.
* Maximum wireless signal rate derived from IEEE Standard 802.11a, 802.11g and Draft 802.11n specifications. Actual data throughput will vary. Network conditions and environmental 
factors, including volume of network traffic, building materials and construction, and network overhead, lower actual data throughput rate. Environmental conditions will adversely affect 
wireless signal range. 
						

							4D-Link DIR-855 User Manual
Section 1 - Product Overview
• Faster Wireless Networking -  The DIR-855 provides up to 300Mbps* wireless connection with other 802.11n wireless 
clients. This capability allows users to participate in real-time activities online, such as video streaming, online gaming, 
and real-time audio. The performance of this 802.11n wireless router gives you the freedom of wireless networking 
at speeds 650% faster than 802.11g.
• Compatible  with  802.11a/g  Devices  -  The  DIR-855  is  still  fully  compatible  with  the  IEEE  802.11g  and  802.11a 
standards, so it can connect with existing 802.11g and 802.11a PCI, USB,\
 and Cardbus adapters.
• Advanced Firewall Features - The Web-based user interface displays a number of advanced network management 
features including: 
• Content Filtering - Easily applied content filtering based on MAC Address, URL, and/or Domain Name.
• Filter Scheduling - These filters can be scheduled to be active on certain days or for a duration of hours 
or minutes.
• Secure  Multiple/Concurrent  Sessions  -  The  DIR-855  can  pass  through  VPN  sessions.  It  supports 
multiple and concurrent IPSec and PPTP sessions, so users behind the DIR-855 can securely access 
corporate networks.
• User-friendly Setup Wizard - Through its easy-to-use Web-based user interface, the DIR-855 lets you control what 
information is accessible to those on the wireless network, whether from the Internet or from your company’s server. 
Configure your router to your specific settings within minutes.
* Maximum wireless signal rate derived from IEEE Standard 802.11g, 802.11a, and Draft 802.11n specifications. Actual data throughput will vary. Network conditions and environmental 
factors, including volume of network traffic, building materials and construction, and network overhead, lower actual data throughput rate. Environmental conditions will adversely affect 
wireless signal range.
Features 
						

							5D-Link DIR-855 User Manual
Section 1 - Product Overview
Hardware Overview
Connections
USB 
Connect a USB 1.1 or 2.0 flash drive 
to  configure  the  wireless  settings 
using WCN and SharePort.
Reset 
Pressing the Reset button restores the router to 
its original factory default settings.
LAN Ports (1-4) 
Connect  Ethernet  devices  such  as 
computers, switches, and hubs.
Internet Port 
The  auto  MDI/MDIX  Internet  port  is 
the connection for the Ethernet cable 
to the cable or DSL modem.
Power Receptor
Receptor  for  the  supplied  power 
adapter.      
						

							6D-Link DIR-855 User Manual
Section 1 - Product Overview
Hardware Overview
LEDs
OLED Screen
Displays information 
regarding the router.
Power LED 
A  solid  light  indicates  a 
proper  connection  to  the 
power supply.
OLED Screen
234651
1WANDisplays Internet connectivity.
2MenuSelect to display the OLED main menu.
3PerformanceSelect to display statistics of the LAN, WAN, and 
wireless connections.
4WPSDisplays the WPS status.
5Date/TimeDisplays the routers date and time.
6DHCPDisplays the DHCP status.