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D-Link DSL-2520U User Manual
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D-Link DSL-2520U User Manual

Adsl2/2+ router with usb and ethernet ports
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User Manual
DSL-2520U
ADSL2/2+ Router with USB and Ethernet Ports
July 2012

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Summary of Contents for D-Link DSL-2520U

  • Page 1 User Manual DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports July 2012...

  • Page 2: Table Of Contents

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports User Manual Contents Chapter 1. Introduction..........4 Contents and Audience............4 Conventions..............4 Document Structure............4 Chapter 2. Overview..........5 General Information............5 Specifications..............6 Product Appearance............9 Front Panel...............9 Back Panel...............10 Delivery Package............11 Safety Instructions............11 Chapter 3. Installation and Connection......12 Before You Begin............12...
  • Page 3 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports User Manual Advanced..............55 UPnP..............55 Interface Grouping............56 DDNS..............58 DNS..............59 Routing..............60 ADSL..............62 Remote Access............63 Firewall..............65 IP Filters...............65 Virtual Servers............68 DMZ..............70 Application Rules............71 MAC Filter...............73 Control..............75 URL Filter...............75 System..............77 Administrator Password...........77 Configuration............78 System Log...............79 Firmware Upgrade............81 NTP Client...............82...

  • Page 4: Chapter 1. Introduction

    Chapter 2 gives an overview of the router's hardware and software features and describes its appearance and the package contents, and provides safety instructions. Chapter 3 explains how to install the router DSL-2520U and configure a PC in order to access its web-based interface.

  • Page 5: Chapter 2. Overview

    LAN. You can configure and manage the settings of the router DSL-2520U via the user-friendly web- based interface (the interface is available in several languages).

  • Page 6: Specifications

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Overview User Manual Specifications Interfaces: ADSL: 1 RJ-11 port • LAN: 1 RJ-45 10/100BASE-TX Fast Ethernet port with auto-MDI/MDIX • USB: 1 port 1.1, type B. • ADSL Standards: ADSL: • ◦ full rate ANSI T1.413 Issue 2, ITU-T G.992.1 (G.dmt) Annex A, ITU-T G.992.2 (G.lite) Annex A, ITU-T G.994.1 (G.hs).
  • Page 7 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Overview User Manual ATM/PPP Protocols: Bridged and routed Ethernet encapsulation • VC-based or LLC-based multiplexing • ATM Forum UNI3.1/4.0 PVC (up to 8 PVCs) • ATM Adaptation Layer Type 5 (AAL5) •...
  • Page 8 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Overview User Manual QoS: Interface grouping • 3 priority queues. • Configuration and Management: Multilingual web-based interface for configuration and management • Access via TELNET • Firmware update via web-based interface •...

  • Page 9: Product Appearance

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Overview User Manual Product Appearance Front Panel Figure 1. Front panel view. Mode Description The router is powered on. Solid green The router is powered off. Power No light The router is in the crash recovery mode.

  • Page 10: Back Panel

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Overview User Manual Back Panel Figure 2. Back panel view. Port Description A DSL port to connect the router to the telephone line. A USB port to connect to a single computer.

  • Page 11: Delivery Package

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Overview User Manual Delivery Package The following should be included: Router DSL-2520U • Power adapter DC 5V/1A • RJ-11 telephone cable • Ethernet cable (CAT 5E) • USB cable • Splitter •...

  • Page 12: Chapter 3. Installation And Connection

    Please, read this manual prior to installing the device. Make sure that you have all the necessary information and equipment. Operating System Configuration of the router DSL-2520U (hereinafter referred to as “the router”) is performed via the built-in web-based interface. The web-based interface is available from any operating system that supports a web browser.

  • Page 13: Connecting To Pc

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual Connecting to PC PC with Ethernet Adapter 1. Make sure that your PC is powered off. 2. Connect an Ethernet cable between the Ethernet port located on the back panel of the router and the Ethernet port of your PC.

  • Page 14: Obtaining Ip Address Automatically In Os Windows Xp

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual Obtaining IP Address Automatically in OS Windows XP 1. Click the Start button and proceed to the Control Panel > Network and Internet Connections > Network Connections window.
  • Page 15 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual 3. In the Local Area Connection Properties window, on the General tab, select the Internet Protocol (TCP/IP) line. Click the Properties button. Figure 4. The Local Area Connection Properties window.
  • Page 16 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual 4. Select the Obtain an IP address automatically and Obtain DNS server address automatically radio buttons. Click the OK button. Figure 5. The Internet Protocol (TCP/IP) Properties window.

  • Page 17: Obtaining Ip Address Automatically In Os Windows 7

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual Obtaining IP Address Automatically in OS Windows 7 1. Click the Start button and proceed to the Control Panel window. 2. Select the Network and Sharing Center section. (If the Control Panel has the category...
  • Page 18 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual 3. In the menu located on the left part of the window, select the Change adapter settings line. Figure 7. The Network and Sharing Center window. Page 18 of 83...
  • Page 19 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual 4. In the opened window, right-click the relevant Local Area Connection icon and select the Properties line in the menu displayed. Figure 8. The Network Connections window.
  • Page 20 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual 5. In the Local Area Connection Properties window, on the Networking tab, select the Internet Protocol Version 4 (TCP/IPv4) line. Click the Properties button. Figure 9. The Local Area Connection Properties window.
  • Page 21 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual 6. Select the Obtain an IP address automatically and Obtain DNS server address automatically radio buttons. Click the OK button. Figure 10. The Internet Protocol Version 4 (TCP/IPv4) Properties window.

  • Page 22: Connecting To Web-Based Interface

    2. In the address bar of the web browser, enter the IP address of the router (by default, the following IP address is specified: 192.168.1.1). Press the Enter key. Figure 11. Connecting to the web-based interface of the DSL-2520U device. 3. On the opened page, enter the username (login) and password for the administrator account (by default, the following username and password are specified: admin, admin).
  • Page 23 To get back to the quick settings page from any Wizard or web-based interface menu section, left- click the D-Link logo in the top left corner of the page. To configure all parameters of the router independently without the Wizards, click the Configure manually button.
  • Page 24 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual From the system statistics page you can proceed to the page for upgrading the router's firmware, contact the technical support group, and proceed to the settings of the local interface.

  • Page 25: Saving And Restoring Settings

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Installation and Connection User Manual Saving and Restoring Settings Note that you should regularly save the changes of the router's settings to the non- volatile memory. The router's web-based interface displays the notification on unsaved changes at the top of the page.

  • Page 26: Chapter 4. Configuring Via Web-Based Interface

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual CHAPTER 4. CONFIGURING WEB-BASED INTERFACE Wizards Internet Setup Wizard To configure connection to the Internet, click the Connect to internet button. Figure 18. Configuring connection to the Internet.

  • Page 27: Pppoe Or Pppoa Connection

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual PPPoE or PPPoA Connection Figure 20. Configuring PPPoE WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 28 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual If needed, specify additional settings for your PPPoE or PPPoA WAN connection. Figure 22. Configuring PPPoE WAN connection. Parameter Description Displayed for the PPPoE type only.
  • Page 29 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description Select the checkbox if you want the router to keep you connected to your ISP even when the connection has been inactive for a specified Keep Alive period of time.
  • Page 30 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description Select the checkbox to allow multicast traffic from the external Enable IGMP Multicast network (e.g. video streaming) to be received. Select the checkbox if you want one WAN IP address to be used for all computers of your LAN.

  • Page 31: Ipoa Or Static Ip Connection

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual IPoA or Static IP Connection Figure 25. Configuring Static IP WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 32 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Click the Next button to continue. If needed, change the connection settings available in the Miscellaneous section. Figure 27. Configuring Static IP WAN connection. Parameter Description...
  • Page 33 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description Allow to create several Select the checkbox to allow the router to use several untagged connections assigned connections. to this port Select the checkbox to allow the router to use tagged VLAN Use VLAN connections.

  • Page 34: Dynamic Ip Connection

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Dynamic IP Connection Figure 29. Configuring Dynamic IP WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 35 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual If needed, change the connection settings available in the Miscellaneous section. Figure 31. Configuring Dynamic IP WAN connection. Parameter Description Select the checkbox to allow multicast traffic from the external Enable IGMP Multicast network (e.g.
  • Page 36 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description Allow to create several Select the checkbox to allow the router to use several untagged connections assigned connections. to this port Select the checkbox to allow the router to use tagged VLAN Use VLAN connections.

  • Page 37: Bridge Connection

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Bridge Connection Figure 33. Configuring Bridge WAN connection. In the Name field, specify a name for the connection for easier identification and click the Next button.
  • Page 38 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual If needed, change the connection settings available in the VLAN section. Figure 35. Configuring Bridge WAN connection. Parameter Description Allow to create several Select the checkbox to allow the router to use several untagged connections assigned connections.

  • Page 39: Site Setup Wizard

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Site Setup Wizard To create a virtual server for redirecting incoming Internet traffic to a specified IP address in the LAN, click the Host site button.

  • Page 40: Status

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Status The pages of this section display data on the current state of the router: network statistics • DSL connection status • active WAN connections •...

  • Page 41: Dsl Status

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual DSL Status The information shown on the tabs of the Status / DSL status page can be used for troubleshooting and diagnosing connection problems. Figure 38. The Status / DSL status page.

  • Page 42: Wan Status

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual WAN Status The Status / WAN status page displays active WAN connections. Figure 39. The Status / WAN status page. Page 42 of 83...

  • Page 43: Dhcp

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual DHCP The Status / DHCP page displays the information on computers that have been identified by hostnames and MAC addresses and have got IP addresses from the DHCP server of the device, as well as the IP address expiration periods (the lease time).

  • Page 44: Routing Table

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Routing Table The Status / Routing table page displays the information on routes. The table contains destination IP addresses, gateways, subnet masks, and other data. Figure 41. The Status / Routing table page.

  • Page 45: Lan Clients

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual LAN Clients On the Status / LAN clients page, you can view data on network devices connected to the router. The page displays devices connected to the router's LAN and devices accessing the web-based interface of the router.

  • Page 46: Net

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual In this menu you can configure basic parameters of the router's local area network and configure connection to the Internet (a WAN connection). On the Net / WAN page, you can create and edit connections used by the router.

  • Page 47: Creating Wan Connection

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Creating WAN Connection Figure 44. The page for creating a new connection. The General settings, ATM and VLAN sections. Page 47 of 83...
  • Page 48 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description General settings A type of network protocol to be used by the connection. Available values: PPPoA • PPPoE • Connection Type Static IP •...
  • Page 49 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description the Peak Cell Rate field is displayed. Specify a required value (in cells per second). (Constant Bit Rate): This service is used for applications that require a constant data rate.
  • Page 50 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual The VLAN section is displayed for the PPPoE, Static IP, Dynamic IP, and Bridge connection types. Parameter Description VLAN Allow to create several Select the checkbox to allow the router to use several untagged connections assigned connections.
  • Page 51 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual The PPP section is displayed for the PPPoE and PPPoA connection types. Figure 46. The page for creating a new connection. The PPP section. Parameter Description Username A username (login) to access the Internet.
  • Page 52 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description Select the checkbox if you want the router to establish connection to the Internet on demand. In the Maximum idle time field, specify Dial on demand a period of inactivity (in seconds) after which the connection should be terminated.

  • Page 53: Lan

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual To configure the router's local interface, proceed to the Net / LAN page. Figure 48. The page for configuring the local interface. If needed, edit the basic parameters of the local interface.
  • Page 54 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual In the DHCP server section, you can configure the built-in DHCP sever of the router. Parameter Description An operating mode of the router's DHCP server. Enable: the router assigns IP addresses to clients automatically in accordance with the specified parameters.

  • Page 55: Advanced

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Advanced In this menu you can configure advanced settings of the router: enable the UPnP function • define interface groups • configure a DDNS service •...

  • Page 56: Interface Grouping

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Interface Grouping On the Advanced / Interface grouping page, you can assign virtual PVC connections to the router's ports (create groups of interfaces), which allows distinguishing different types of traffic.
  • Page 57 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual When you add an interface to the new group, it is excluded from the group to which it has been assigned before. To edit or remove an existing group, select the relevant group on the Advanced / Interface grouping page.

  • Page 58: Ddns

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual DDNS On the Advanced / DDNS page, you can define parameters of the DDNS service, which allows associating a domain name with dynamic IP addresses. Figure 52. The Advanced / DDNS page.

  • Page 59: Dns

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual On the Advanced / DNS page, you can add DNS servers to the system. Figure 54. The Advanced / DNS page. DNS servers are used to determine the IP address from the name of a server in Intranets or the Internet (as a rule, they are specified by an ISP or assigned by a network administrator).

  • Page 60: Routing

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Routing On the Advanced / Routing page, you can add static routes (routes for networks that are not connected directly to the device but are available through the interfaces of the device) into the system.
  • Page 61 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual You can specify the following parameters: Parameter Description Destination network A destination network to which this route is assigned. Destination netmask The destination network mask. An IP address through which the destination network can be Gateway accessed.

  • Page 62: Adsl

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual ADSL The Advanced / ADSL page includes the set of ADSL standards that should be defined by an ISP. Contact your ISP to set proper parameters. Select the relevant options and click the Change button.

  • Page 63: Remote Access

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Remote Access On the Advanced / Remote access page, you can configure remote access to the web-based interface of the router. By default, the access from external networks to the router is closed. If you need to allow access to the router from the external network, create relevant rules.
  • Page 64 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Click the Change button. To edit a rule for remote access, click the relevant link. On the opened page, change the needed parameters and click the Change button.

  • Page 65: Firewall

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Firewall In this menu you can configure the firewall of the router: add rules for IP filtering • create virtual servers • define a DMZ •...
  • Page 66 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Figure 61. The page for adding a rule for IP filtering. You can specify the following parameters: Parameter Description IP filter rule editing Name A name for the rule for easier identification.
  • Page 67 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description The source host/subnet IP address. If the IP address range checkbox is selected, specify the starting IP address of the range in the Source (first) field and the ending IP address in the Source (last) field.

  • Page 68: Virtual Servers

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Virtual Servers On the Firewall / Virtual servers page, you can create virtual servers for redirecting incoming Internet traffic to a specified IP address in the local area network.
  • Page 69 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Parameter Description A port of the router from which traffic is directed to the IP address specified in the Private IP field. Specify the start and the end value Public port (begin)/ for the port range.

  • Page 70: Dmz

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual A DMZ is a host or network segment located “between” internal (local) and external (global) networks. In the router, the DMZ implements the capability to transfer a request coming to a port of the DSL router from the external network to a specified host of the internal network.

  • Page 71: Application Rules

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Application Rules On the Firewall / Application rules page, you can define rules for the Port Triggering function. Figure 65. The Firewall / Application rules page.
  • Page 72 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual You can specify the following parameters: Parameter Description Application rule editing Rules name A name for the rule for easier identification. Interface A WAN connection to which this rule will be assigned.

  • Page 73: Mac Filter

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual MAC Filter The MAC-address-based filtering allows forwarding and blocking traffic subject to the source and destination MAC addresses. MAC-address-based filtering is active only when the device is configured as a transparent bridge (the Bridge mode).
  • Page 74 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual On the opened page, specify the needed parameters. Figure 69. The page for adding a rule for MAC-address-based filtering. Parameter Description The MAC address of the source host. To choose a device...

  • Page 75: Control

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Control This menu is designed to create restrictions on access to certain web sites. URL Filter On the Control / URL filter page, you can specify restrictions on access to certain web sites.
  • Page 76 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual On the opened page, specify the needed parameters. Figure 72. The page for adding an address for the URL filter. Enter a URL address in the URL address field, specify a port (as usual, you need to specify port 80 for HTTP), then click the Save button.

  • Page 77: System

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual System In this menu you can do the following: change the password used to access the router's settings • save the current settings to the non-volatile memory •...

  • Page 78: Configuration

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Configuration On the System / Configuration page, you can save the changed settings to the non-volatile memory, restore the factory defaults, backup the current configuration, or restore the router's configuration from a previously created file.

  • Page 79: System Log

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual System Log On the System / System log page, you can set the system log options and configure sending the system log to a remote host.
  • Page 80 DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Control Description The IP or URL address of the host from the local or global network, Server to which the system log will be sent. A port of the host specified in the Server field. By default, the Port value 514 is specified.

  • Page 81: Firmware Upgrade

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual Firmware Upgrade On the System / Firmware upgrade page, you can upgrade the firmware of the router. Figure 77. The System / Firmware upgrade page. The current version of the router's firmware is displayed in the Firmware version field on the Start page.

  • Page 82: Ntp Client

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Configuring via Web-based Interface User Manual NTP Client On the System / NTP client page, you can configure automatic synchronization of the system time with a time server on the Internet. Figure 78. The System / NTP client page.

  • Page 83: Chapter 5. Abbreviations And Acronyms

    DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports Abbreviations and Acronyms User Manual CHAPTER 5. ABBREVIATIONS AND ACRONYMS Address Resolution Protocol Dynamic Domain Name System DDNS Distributed Denial of Service DDoS Dynamic Host Configuration Protocol DHCP DeMilitarized Zone Domain Name System...

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