User Manual DSL-2540U ADSL/Ethernet Router with Built-in Switch July 2012
DSL-2540U ADSL/Ethernet Router with Built-in Switch User Manual Contents Chapter 1. Introduction..........................................4 Contents and Audience.......................................................4 Conventions.................................................................4 Document Structure..........................................................4 Chapter 2. Overview..............................................5 General Information..................................................
DSL-2540U ADSL/Ethernet Router with Built-in Switch User Manual Advanced...................................................................58 UPnP.....................................................................58 Interface Grouping.......................................................59 DDNS.....................................................................61 DNS......................................................................62 Routing..........................................................
DSL-2540U ADSL/Ethernet Router with Built-in Switch Introduction User Manual CHAPTER 1. INTRODUCTION Contents and Audience This manual describes the router DSL-2540U and explains how to configure and operate it. This manual is intended for users familiar with basic networking concepts, who create an in-home local area network, and system administrators, who install and configure networks in offices. Conventions Example ! Description text The body text of the manual.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Overview User Manual CHAPTER 2. OVERVIEW General Information The DSL-2540U device is an affordable high-end ADSL/Ethernet router developed for home and SOHO (Small Office/Home Office) networks. It provides fast and simple broadband access to the Internet and a shared connection for multi users. The device allows accessing the Internet via ADSL technology and via Ethernet technology.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Overview User Manual Specifications* Interfaces: • ADSL: 1 RJ-11 port • LAN: 4 RJ-45 10/100BASE-TX Fast Ethernet ports with auto-MDI/MDIX. 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). • ADSL2: ◦ ITU-T G.992.3 (G.dmt.bis) Annex A/L/M, ITU-T G.992.4 (G.lite.bis) Annex A. • ADSL2+: ◦ ITU-T G.992.5 Annex A/L/M.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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) • ITU-T I.610 OAM F4/F5 loopback • ATM QoS • PPP over ATM (RFC 2364) • PPP over Ethernet (PPPoE) • Keep-alive for PPP connections.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 • Saving/restoring configuration to/from file • Support of remote logging • Automatic synchronization of system time with NTP server. LEDs: • Power • Status • LAN 1-4 • DSL • Internet.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Overview User Manual Product Appearance Front Panel Figure 1. Front panel view. LED Power Status Mode Solid green The router is powered on. No light The router is powered off. Solid red The router is in the crash recovery mode. Blinking green Traffic (Internet traffic) is passing through the router. No light or solid green A failure of the system.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Overview User Manual Back Panel Figure 2. Back panel view. Port DSL LAN 1-4 Description A DSL port to connect the router to the telephone line. 4 Ethernet ports to connect Ethernet devices. One port can be used to connect to a private Ethernet line. A button to restore the factory default settings. RESET 12V=0.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Overview User Manual Delivery Package The following should be included: • Router DSL-2540U • Power adapter DC 12V/0.5A • RJ-11 telephone cable • Ethernet cable (CAT 5E) • Splitter • “Quick Installation Guide” (brochure). The “User Manual” and “Quick Installation Guide” documents in Russian and English are available on D-Link website (see ftp.dlink.ru/pub/ADSL/DSL-2540U/Description/).
DSL-2540U ADSL/Ethernet Router with Built-in Switch Installation and Connection User Manual CHAPTER 3. INSTALLATION AND CONNECTION Before You Begin 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-2540U (hereinafter referred to as “the router”) is performed via the built-in web-based interface.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 any of Ethernet ports located on the back panel of the router and the Ethernet port of your PC. 3. To connect the router to a DSL line: connect a phone cable between the DSL port of the router and the ADSL OUT port of the splitter. Connect your phone to the PHONE port of the splitter.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. 5. Click the ОК button in the connection properties window. Now your computer is configured to obtain an IP address automatically.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 view (the Category value is selected from the View by drop-down list in the top right corner of the window), choose the View network status and tasks line under the Network and Internet section.) Figure 6.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. 7. Click the OK button in the connection properties window. Now your computer is configured to obtain an IP address automatically.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Installation and Connection User Manual Connecting to Web-based Interface When you have configured your computer, you can access the web-based interface and configure needed parameters (for example, create an interface to connect to the Internet, specify the settings of the firewall, edit the password for the administrator account, etc.) 1. Start a web browser (see the Before You Begin section, page 12). 2.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Installation and Connection User Manual After successful registration the router's quick settings page opens. Figure 13. The quick settings page. To configure connection to the Internet, click the Connect to internet button. After clicking the button, the Internet Setup Wizard opens (see the Internet Setup Wizard section, page 25). To configure access from the Internet to a web server located in your LAN, click the Host site button.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. To upgrade the firmware of the router, left-click the current firmware version (the right column of the Firmware version line).
DSL-2540U ADSL/Ethernet Router with Built-in Switch Installation and Connection User Manual Saving and Restoring Settings ! Note that you should regularly save the changes of the router's settings to the nonvolatile memory. The router's web-based interface displays the notification on unsaved changes at the top of the page. Figure 16. The notification on unsaved changes. You can save the router's settings via the top-page menu displayed when the mouse pointer is over the System caption. Figure 17.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual CHAPTER 4. CONFIGURING INTERFACE VIA WEB-BASED Wizards Internet Setup Wizard To configure connection to the Internet, click the Connect to internet button. Figure 18. Configuring connection to the Internet. To create a new WAN connection, click the add new connection link. Figure 19. The page for selecting the connection type.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 21. Configuring PPPoE WAN connection. In the VPI field, specify the VPI. In the VCI field, specify the VCI. From the Encapsulation Mode drop-down list, select a method of encapsulation.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 Service name Authentication algorithm MTU Description Displayed for the PPPoE type only. The name of the PPPoE authentication server. Select a required authentication method from the drop-down list or leave the AUTO value.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Keep Alive 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 period of time. When the checkbox is selected, the LCP interval and LCP fails fields are available. Specify the required values.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Enable IGMP Multicast Select the checkbox to allow multicast traffic from the external network (e.g. video streaming) to be received. NAT Select the checkbox if you want one WAN IP address to be used for all computers of your LAN. Firewall Select the checkbox to enable protection against ARP and DDoS attacks. Click the Next button to continue.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 26. Configuring Static IP WAN connection. In the VPI field, specify the VPI. In the VCI field, specify the VCI. From the Encapsulation Mode drop-down list, select a method of encapsulation.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 Enable IGMP Multicast Select the checkbox to allow multicast traffic from the external network (e.g. video streaming) to be received.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Allow to create several connections assigned to this port Select the checkbox to allow the router to use several untagged connections. Use VLAN Select the checkbox to allow the router to use tagged VLAN connections. VLAN ID An identifier for the VLAN. The field is displayed when the Use VLAN checkbox is selected.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 30. Configuring Dynamic IP WAN connection. In the VPI, specify the VPI. In the VCI field, specify the VCI. From the Encapsulation Mode drop-down list, select a method of encapsulation.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 Enable IGMP Multicast Select the checkbox to allow multicast traffic from the external network (e.g. video streaming) to be received. NAT Select the checkbox if you want one WAN IP address to be used for all computers of your LAN.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Allow to create several connections assigned to this port Select the checkbox to allow the router to use several untagged connections. Use VLAN Select the checkbox to allow the router to use tagged VLAN connections. VLAN ID An identifier for the VLAN. The field is displayed when the Use VLAN checkbox is selected.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 34. Configuring Bridge WAN connection. In the VPI field, specify the VPI. In the VCI field, specify the VCI. From the Encapsulation Mode drop-down list, select a method of encapsulation. Click the Next button to continue.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 connections assigned to this port Select the checkbox to allow the router to use several untagged connections. Use VLAN Select the checkbox to allow the router to use tagged VLAN connections. VLAN ID An identifier for the VLAN.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 36. The page for adding a virtual server. On the opened page, you can specify the following parameters: Parameter Description Name Enter a name for the virtual server for easier identification. You can specify any name.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 • IP addresses leased by the DHCP server • the routing table • data on devices connected to the router's network and its web-based interface.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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). Figure 40. The Status / DHCP page.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 built-in switch of the router, and devices accessing the web-based interface of the router. Figure 42. The Status / LAN clients page.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Net In this menu you can configure basic parameters of the router's local area network and configure connection to the Internet (a WAN connection). WAN On the Net / WAN page, you can create and edit connections used by the router. Figure 43. The Net / WAN page. To create a new connection, click the Add button. On the page displayed, specify the relevant values.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Creating ADSL WAN Connection Figure 44. The page for creating a new connection. The General settings, ATM and VLAN sections.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description General settings A type of network protocol to be used by the connection. Available values: Connection Type Port • PPPoA • PPPoE • Static IP • Dynamic IP • IPoA • Bridge. A physical interface to which the new connection will be assigned. Leave the DSL(new) value to create a new interface at the physical layer. Name A name for connection for easier identification.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description the Peak Cell Rate field is displayed. Specify a required value (in cells per second). CBR (Constant Bit Rate): This service is used for applications that require a constant data rate. It is mostly used for transferring uncompressed audio and video, e.g.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 connections assigned to this port Select the checkbox to allow the router to use several untagged connections. Use VLAN Select the checkbox to allow the router to use tagged VLAN connections. VLAN ID An identifier for the VLAN.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 PPP Username Without authorization Password Password confirmation Service name Authentication algorithm MTU Keep Alive A username (login) to access the Internet.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Dial on demand Select the checkbox if you want the router to establish connection to the Internet on demand. In the Maximum idle time field, specify a period of inactivity (in seconds) after which the connection should be terminated. PPP IP extension This option is used by some ISPs. Contact your ISP to clarify if this checkbox needs to be enabled.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Creating Ethernet WAN Connection Prior to creating an Ethernet WAN connection, specify a LAN port that will be used as the WAN port (see the Interface Grouping section, page 59). Figure 48. The page for creating a new connection. The General settings and Ethernet sections. Parameter Description General settings A type of network protocol to be used by the connection.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description VLAN (The section is displayed, if the VLAN MUX Mode or ServiceMUX Mode choice of the Ethernet WAN type radio button is selected on the Advanced / Interface grouping page.) Allow to create several connections assigned to this port If the checkbox is selected, the router is able to use several untagged connections.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual The PPP section is displayed for the PPPoE connection type. Figure 50. The page for creating a new connection. The PPP section. Parameter Description PPP Username Without authorization Password Password confirmation A username (login) to access the Internet. Select the checkbox if you don't need to enter a username and password to access the Internet. A password to access the Internet.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Description Dial on demand Select the checkbox if you want the router to establish connection to the Internet on demand. In the Maximum idle time field, specify a period of inactivity (in seconds) after which the connection should be terminated. PPP IP extension This option is used by some ISPs. Contact your ISP to clarify if this checkbox needs to be enabled.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual LAN To configure the router's local interface, proceed to the Net / LAN page. Figure 52. The page for configuring the local interface. If needed, edit the basic parameters of the local interface. Parameter Description IP Address The IP address of the router in the local subnet. By default, the following value is specified: 192.168.1.1. Netmask The mask of the local subnet.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Mode Enable: the router assigns IP addresses to clients automatically in accordance with the specified parameters. When this value is selected, the Start IP, End IP, and the Lease time fields are displayed on the page.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 and allow the router to connect to a private Ethernet line • configure a DDNS service • add name servers • define static routes • edit the ADSL connection parameters • create rules for remote access to the web-based interface.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. This function is mostly used in Triple-play networks. Also on the page you can configure the router to connect to a private Ethernet line.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Figure 55. The page for adding a new group of ports. You can specify the following parameters: Parameter Description Name A name for the group for easier identification. You can specify any name. LANs WANs The list of available internal interfaces is displayed in the left column of the line. Use the button ==> to select interfaces.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 56. The Advanced / DDNS page. To add a new DDNS service, click the Add button. Figure 57. The page for editing a DDNS service.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual DNS On the Advanced / DNS page, you can add DNS servers to the system. Figure 58. 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). The device performs the DNS relay function, i.e., it redirects the DNS requests of users to external DNS servers.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 59. The Advanced / Routing page. To create a new route, click the Add button. Figure 60. The page for adding a static route.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Gateway An IP address through which the destination network can be accessed. The field is displayed when the value is selected from the Via Interface drop-down list. Metric A metric for the route.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 61. The Advanced / ADSL page.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 62. The Advanced / Remote access page. To create a new rule, click the Add button. Figure 63.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. To remove a rule for remote access, click the relevant link. On the opened page, click the Delete button.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 • configure the Port Triggering function • configure the MAC filter. IP Filters On the Firewall / IP filters page, you can create new rules for filtering IP packets and edit or remove existing rules. Figure 64. The Firewall / IP filters page.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Figure 65. The page for adding a rule for IP filtering. You can specify the following parameters: Parameter Description IP filter rule editing Name Protocol A name for the rule for easier identification. A protocol for network packet transmission. Select a value from the drop-down list.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Source If the IP address range checkbox is not selected, specify the IP address of the host or subnet in the Source field. To specify an IP address add /32.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 66. The Firewall / Virtual servers page. To create a new virtual server, click the Add button. Figure 67. The page for adding a virtual server.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Parameter Public port (begin)/ Public port (end) Private port (begin)/ Private port (end) 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 for the port range. If you need to specify one port, enter the needed value in the Public port (begin) field and leave the Public port (end) field blank.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual DMZ 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. On the Firewall / DMZ page you can specify the IP address of the DMZ host. Figure 68. The Firewall / DMZ page.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 69. The Firewall / Application rules page. To add a new rule for the Port Triggering function, click the Add button. Figure 70. The page for adding a rule for the Port Triggering function.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual You can specify the following parameters: Parameter Description Application rule editing Rules name Interface A name for the rule for easier identification. A WAN connection to which this rule will be assigned. Incoming port and protocol settings Protocol Starting port/ Ending port A protocol to which this rule will be applied upon receiving data to the specified port or port range.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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). On the Configuration tab, you can select the operating mode of the MAC filter.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual On the opened page, specify the needed parameters. Figure 73. The page for adding a rule for MAC-address-based filtering. Parameter Description Source MAC address The MAC address of the source host. To choose a device connected to the router's LAN at the moment, select the relevant value from the drop-down list located to the right of the field (the field will be filled in automatically).
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 74. The Control / URL filter page. The Configuration tab.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Figure 76. 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. To remove an address from the list of URL addresses, select the relevant address in the table on the URL addresses tab and click the Delete button.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 • create a backup of the router's configuration • restore the router's configuration from a previously saved file • restore the factory default settings • view the system log • update the firmware of the router • configure automatic s
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 78. The System / Configuration page.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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. Figure 79. The System / System log page. The Configuration tab. To enable logging of the system events, select the Logging checkbox on the Configuration tab. Then specify the needed parameters. Control Description Select a type of logging from the drop-down list.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Control Description Server The IP or URL address of the host from the local or global network, to which the system log will be sent. Port A port of the host specified in the Server field. By default, the value 514 is specified. After specifying the needed parameters, click the Change button. To disable logging of the system events, deselect the Logging checkbox and click the Change button.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Configuring via Web-based Interface User Manual Firmware Upgrade On the System / Firmware upgrade page, you can upgrade the firmware of the router. Figure 81. The System / Firmware upgrade page. The current version of the router's firmware is displayed in the Firmware version field on the Start page.
DSL-2540U ADSL/Ethernet Router with Built-in Switch 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 82. The System / NTP client page. To enable automatic synchronization with a time server: 1. Select the Enabled checkbox. 2. Select your time zone. 3. Specify the needed NTP server in the NTP servers field or leave the server specified by default. 4.
DSL-2540U ADSL/Ethernet Router with Built-in Switch Abbreviations and Acronyms User Manual CHAPTER 5.
