Planet GRT-504 User Manual
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Planet GRT-504 User Manual

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  • Page 1 4-Wire G.SHDSL.bis Firewall Router GRT-504 User’s Manual...

  • Page 2: Ce Mark Warning

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Copyright Copyright© 2008 by PLANET Technology Corp. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of PLANET.

  • Page 3: Fcc Caution

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual FCC Caution: To assure continued compliance (example-use only shielded interface cables when connecting to computer peripheral devices). Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

  • Page 4: Table Of Contents

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Table of Contents DESCRIPTIONS ..........................7 .............................7 EATURES ..........................9 PECIFICATION ..........................11 PPLICATIONS GETTING TO KNOW ABOUT THE ROUTER ................12 ..........................12 RONT ANEL ..........................13 ANEL SHDSL.....................14 ONNECTOR .........................14 ONSOLE ABLE GETTING TO KNOW FIREWALL FEATURE................15 ...........................15...
  • Page 5 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.1.4 Data Rate............................ 48 6.2.1.5 SNR Margin ..........................49 6.2.2 WAN............................50 6.2.3 Bridge............................53 6.2.4 VLAN .............................55 6.2.4.1 802.1Q Tag-Based VLAN ......................56 6.2.4.2 Port-Based VLAN ........................56 6.2.5 STP ............................58 6.2.6 Route .............................59 6.2.7...
  • Page 6 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.5.2.2 Restore Configuration ........................ 95 6.5.2.3 Backup Configuration ........................ 95 6.5.3 Upgrade..........................96 6.5.4 Logout............................97 6.5.5 Restart ...........................97 ............................99 XAMPLE 6.6.1 LAN-to-LAN connection with bridge Mode................99 6.6.1.1 CO side............................99 6.6.1.2 CPE Side ..........................100 6.6.2...
  • Page 7 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.9.2 Security..........................126 7.9.3 SNMP ..........................127 7.9.4 Supervisor Password and ID....................128 7.9.5 SNTP ...........................129 7.10 ............................131 TILITY 7.10.1 Upgrade..........................131 7.10.2 Backup ..........................131 7.10.3 Restore ..........................132 7.11 ............................133 7.12 ............................134 ETUP 7.12.1 Mode ..........................134 7.12.2 SHDSL.bis ........................134...

  • Page 8: Descriptions

    ♦ QoS (Quality of Service): The GRT-504 supports ATM QoS and IP QoS. The ATM QoS includes UBR (Unspecified bit rate), CBR (Constant bit rate), VBR-rt (Variable bit rate real-time), and VBR-nrt (Variable bit rate non-real-time). Also, the traffic classification based on IP, IP range, port, protocol, and precedence.
  • Page 9 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual ♦ Simple Network Management Protocol (SNMP)：It is an easy way to remotely manage the router via SNMPv1/v2. ♦ Fully ATM protocol stack implementation over G.SHDSL.bis ♦ PPPoA and PPPoE support user authentication with PAP/CHAP/MS-CHAP...

  • Page 10: Specification

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Specification Product 4-Wire G.SHDSL.bis Firewall Router Model GRT-504 Hardware Standard Compliant with ITU-T G.991.2 Standard Annex A/B Compliant with G.SHDSL.bis Annex A/B/F/G TC-PAM Line Code Symmetric data transmission speed up to 11.4 Mbps on 4-wire Multi-range from 384 Kbps to 11.4 Mbps...

  • Page 11: Package Contents

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Package Contents The following items should be included. If any of these items are damaged or missing, please contact your dealer immediately. 4-Wire G.SHDSL.bis Firewall Router x 1 Power Adapter x 1 Quick Installation Guide x 1 User’s manual CD x 1...

  • Page 12: Applications

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Applications...

  • Page 13: Getting To Know About The Router

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Getting to know about the router This section will introduce hardware of the router. Front Panel The front panel contains LEDs which show status of the router. LEDs Color Active Description Green The power adaptor is connected to GRT-504 Green G.SHDSL.bis connection is established...

  • Page 14: Rear Panel

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Rear Panel The rear panel of SHDSL.bis router is where all of the connections are made. Port Description DC-IN Power connector with 9V DC 1.0A LAN (1 / 2 / 3 / 4)

  • Page 15: Shdsl.bis Line Connector

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual SHDSL.bis Line Connector Below figure show the SHDSL.bis line cord plugs pin asignment: Console Cable Below figure show the cosole cable pins asignment: Pin Number Description Figure No connection RxD (O) TxD (I)

  • Page 16: Getting To Know Firewall Feature

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Getting to know Firewall feature Introduction A firewall protects networked computers from intentional hostile intrusion that could compromise confidentiality or result in data corruption or denial of service. It must have at least two network interfaces, one for the network it is intended to protect, and one for the network it is exposed to.

  • Page 17: Types Of Firewall

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Types of Firewall There are three types of firewall: 3.2.1 Packet Filtering In packet filtering, firewall will examine the protocol and the address information in the header of each packet and ignore its contents and context (its relation to other packets and to the intended application).

  • Page 18: Circuit Gateway

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual NAT (Network Address Translation) Firewall 192.168.0.10 192.120.8.5 Internet Internal IP External IP 192.168.0.10 192.120.8.5 192.168.0.11 192.120.8.5 192.168.0.11 Internal/Protected Network External/Unprotected Network PAT (Port Address Translation) Firewall 192.120.8.5 192.168.0.10:1025 192.120.8.5:2205 Internet 192.120.8.5:2206 Client IP...

  • Page 19: Application Gateway

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 3.2.3 Application Gateway The Application Level Gateway acts as a proxy for applications, performing all data exchanges with the remote system in their behalf. This can render a computer behind the firewall invisible to the remote system.

  • Page 20: Denial Of Service Attack

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Denial of Service Attack Inturruption Typically, Denial of Service (DoS) attacks result in two flavors: resource starvation and system overloading. DoS attacks happen usually when a legitimate resource demanding is greater than the supplying (ex. too many web requests to an already overloaded web server). Software weakness or system incorrect configurations induce DoS situations also.
  • Page 21 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual TCP SYN Internet requests Hacker 's Target System Backing TCP SYN-ACK System quene Packets ICMP Flood- The attacker transmits a volume of ICMP request packets to cause all CPU resources to be consumed serving the phony requests.

  • Page 22: Getting To Know Vlan Feature

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Getting to know VLAN feature Virtual Local Area Network (VLAN) is defined as a group of devices on one or more LANs that are configured so that they can communicate as if they were attached to the same wire, when in fact they are located on a number of different LAN segments.

  • Page 23: Applications

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 68 octets. Such a frame is classified as belonging to a particular VLAN based on the value of the VID that is included in the tag header. The presence of the tag header carrying a non-null VID means that some other device, either the originator of the frame or a VLAN-aware bridge, has mapped this frame into a VLAN and has inserted the appropriate VID.
  • Page 24 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual...
  • Page 25 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual...

  • Page 26: Configuration To The Router

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Configuration to the Router This guide is designed to let users through Web Configuration or serial console with G.shdsl.bis Router in the easiest and quickest way possible. Please follow the instructions carefully. Note: There are three methods to configure the router: serial console, Telnet and Web Browser.
  • Page 27 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The difference Protocols need to setup difference WAN parameters. After knowing the Protocol provided by ISP, you have to ask the necessary WAN parameters to setup it. Bridge EoA Route EoA 2626下午 06:08:09Wed2626WWed 2626¾Wed2626...

  • Page 28: Install The Shdsl.bis Router

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Install the SHDSL.bis Router To avoid possible damage to this Router, do not turn on the router before Hardware Installation. Connect the power adapter to the port labeled DC-IN on the rear panel of the product.

  • Page 29: Configuration Via Web Browser

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Configuration via Web Browser Step. 1 Click the start button. Select setting and control panel. Step. 2 Double click the network icon.
  • Page 30 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual In the Configuration window, select the TCP/IP protocol line that has been associated with your network card and then click property icon. Choose IP address tab. Select Obtain IP address automatically. Click OK button.
  • Page 31 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The window will ask you to restart the PC. Click Yes button. After rebooting your PC, open IE or Netscape Browser to connect the Router. Type http://192.168.0.1 The default IP address and sub net-mask of the Router is 192.168.0.1 and 255.255.255.0.
  • Page 32 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Function Listing Following is the G.SHDSL.bis router full function listing. BASIC (Quick Setup) ADVANCED • SHDSL.bis • • BRIDGE • VLAN • • ROUTE • NAT/DMZ • VIRTUAL SERVER • FIREWALL • IP QoS STATUS •...

  • Page 33: Basic Setup

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Basic Setup The Basic Setup contains Bridge or Route operation mode. User can use it to completely setup the router. After successfully completing it, you can access Internet or as LAN extension. This is the easiest and possible way to setup the router.
  • Page 34 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The flow chart of bridge mode setup: Setup up system mode and SHDSL mode Click Bridge and CPE Side to setup Bridging mode and then click Next for the next setting. This router can be setup as one of two SHDSL.bis working mode: CO (Central Office) and CPE (Customer Premises Equipment).
  • Page 35 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual LAN: IP: 192.168.0.1 Subnet Mask: 255.255.255.0 Gateway: 192.168.0.254 (The Gateway IP is provided by ISP) Host Name: SOHO Some of the ISP requires the Host Name as identification. You may check with ISP to see if your Internet service has been configured with a host name.

  • Page 36: Routing Mode

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.1.2 Routing Mode Parameter Table: System mode Route SHDSL □CO side □CPE side IP type □Fixed □Dynamic(DHCP Client) IP address Subnet Mast Host Name Trigger DHCP service □Disable □Server □Relay WAN1 Encapsulation □VC-mux □LLC...
  • Page 37 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The flow chart of route mode setup: Routing mode contains DHCP server, DHCP client, DHCP relay, Point-to-Point Protocol over ATM and Ethernet and IP over ATM and Ethernet over ATM. You have to clarify which Internet protocol is provided by ISP.
  • Page 38 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Set up the LAN IP address , Subnet Mask, Gateway, Host Name and Trigger DHCP Service with fixed IP type. IP type: Fixed IP Address: 192.168.0.1 Subnet Mask: 255.255.255.0 Host Name: SOHO Some of the ISP requires the host name as identification. You may check with ISP to see if your Internet service has been configured with a host name.
  • Page 39 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Set up the DHCP Server parameters and fixed DHCP host table Start IP Address: This field specifies the first of the contiguous addresses in the IP address pool. End IP Address: The field specifies the last of the contiguous addresses in the IP address pool.
  • Page 40 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Set up IP address, Subnet Mask, Host Name with DHCP Client mode LAN IP Type: Dynamic(DHCP Client) Click Next to setup WAN1 parameters. DHCP relay If you have a DHCP server in LAN and you want to use it for DHCP services, the product provides DHCP relay function to meet yours need.
  • Page 41 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Set up the WAN1 VPI, VCI Encap. and Protocol VPI: 0 VCI: 33 AAL5 Encap: LLC Protocol: PPPoA + NAT or PPPoE + NAT Click Next to setup User name and password. For more understanding about NAT, review NAT/DMZ chapter.
  • Page 42 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Username : Enter the user name exactly as your ISP assigned. Password: Enter the password associated with the user name above. Password confirm: Enter the password again for confirmation. Idle Time: When you don’t want the connection up all the time and specify an idle time on this field.
  • Page 43 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual IP Address: 10.1.2.1 It is router IP address like from Internet. Your ISP will provide it and you need to specify here. Subnet mask: 255.255.255.0 This is the router subnet mask seen by external users on Internet. Your ISP will provide it to you.
  • Page 44 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Review The screen will prompt the parameters that will be written in NVRAM. Check the parameters before writing in NVRAM. Press Restart to restart the router working with new parameters or press Continue to setup...

  • Page 45: Reference Diagram

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.1.3 Reference diagram Bridge mode When configured in Bridge Mode, the router will act as a pass-through device and allow the workstations on your LAN to have public addresses directly on the internet.
  • Page 46 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual IP: 10.1.2.1 Router Netmask: 255.255.255.0 Gateway: 10.1.2.2 IP: 192.168.0.1 DNS: 168.95.1.1 Netmask: 255.255.255.0 IP: 10.1.2.2 Netmask: 255.255.255.0 DSLAM IP: 192.168.0.2~51 VPI:0, VCI:33 Netmask: 255.255.255.0 Encapsulation: LLC Gateway: 192.168.0.1 PPPoE or PPPoA PPPoA (point-to-point protocol over ATM) and PPPoE (point-to-point protocol over Ethernet) are authentication and connection protocols used by many service providers for broadband Internet access.

  • Page 47: Advanced Setup

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Advanced Setup Advanced setup contains SHDSL.bis, WAN, Bridge, VLAN, Ethernet, Route, NAT/DMZ, Virtual SERVER, FIREWALL and IP QoS parameters. 6.2.1 SHDSL.bis You can setup the Annex type, data rate and SNR margin for SHDSL.bis parameters in SHDSL.bis.

  • Page 48: Line Type

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.1.2 Line Type There are six type of line type for you choose: 2-wire, M-Pair, M-Pair(Conexant), Auto Fall Back, StandBy and Multi-link. 2-wire mode For 4-wires model, it can use only the first one pair for the single pair DSL wire application.

  • Page 49: Tcpam Type

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Multi–Link Mode For 4-wire model, each pair will connect to two different remote device, which may or may not be in the same location. 6.2.1.3 TCPAM Type TCPAM stands for Trellis Coded Pulse Amplitude Modulation. It is the modulation format that is used in both HDSL2 and SHDSL, and provides robust performance over a variety of loop conditions.

  • Page 50: Snr Margin

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.1.5 SNR Margin This is an index of line connection quality. You can see the actual SNR margin in STATUS SHDSL.bis. The larger is SNR margin, the better is line connection quality. If you set SNR margin in the field as 3, the SHDSL.bis connection will drop and reconnect when the SNR margin is lower than 3.

  • Page 51: Wan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.2 WAN The router can support up to 8 PVCs. WAN 1 was configured via BASIC item except QoS. If you want to setup another PVCs such as WAN 2 to 7, those parameters are setup on the pages of WAN under ADVANCED.
  • Page 52 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual If the WAN Protocol is IPoA or EoA, leave the ISP parameters as default setting. The system will ingore the information, but erasion or blank in default setting will cause system error. VC-mux (VC-based Multiplexing): Each protocol is assigned to a specific virtual circuit. VC-based multiplexing may be dominant in environments where dynamic creation of large numbers of ATM VCs is fast and economical.
  • Page 53 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Username : Enter the user name exactly as your ISP assigned. Password: Enter the password associated with the user name above. Password confirm: Enter the password again for confirmation. Idle Time: When you don’t want the connection up all the time and specify an idle time on this field.

  • Page 54: Bridge

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.3 Bridge If you want to setup advanced filter function while router is working in bridge mode, you can use BRIDGE menu to setup the filter function, blocking function. Click Bridge to setup.
  • Page 55 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Press Add in the bottom of web page to add the static bridge information. If you want to filter the designated MAC address of LAN PC to access Internet, press Add to establish the filtering table. Put the MAC address in MAC Address field and select Filter in LAN field.

  • Page 56: Vlan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.4 VLAN Click VLAN to configure VLAN. VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical networks. Devices on a logical network belong to one group. A device can belong to more than one group.

  • Page 57: Q Tag-Based Vlan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.4.1 802.1Q Tag-Based VLAN For setting 802.1Q VLAN click the 802.1Q Tagt-Based VLAN. The screem will prompt as following. VID: (Virtual LAN ID) It is an definite number of ID which number is from 1 to 4094.
  • Page 58 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual For setting Port-Based VLAN, Click Port-Based VLAN, The screem will prompt as following: Port-Based VLANs are VLANs where the packet forwarding decision is based on the destination MAC address and its associated port.

  • Page 59: Stp

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.5 STP Click STP can disable or enable the bridge STP mode. STP (Spanning-Tree Protocol) defined in the IEEE 802.1D, is a link management protocol that provides path redundancy while preventing undesirable loops in the network. For an Ethernet network to function properly, only one active path can exist between two stations.

  • Page 60: Route

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.6 Route If the Router is connected to more than one network, it may be necessary to set up a static route between them. A static route is a pre-determined pathway that network information must travel to reach a specific host or network.
  • Page 61 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual To modify the RIP (Routing information protocol) Parameters: RIP Mode: Enable Auto RIP Summary: Enable Press Modify RIP Mode: This parameter determines how the router handle RIP (Routing information protocol). RIP allows it to exchange routing information with other router.
  • Page 62 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Authentication required: None: for RIP, there is no need of authentication code. Password: the RIP is protected by password, authentication code. MD5: The RIP will be decoded by MD5 than protected by password, authentication code.

  • Page 63: Nat/Dmz

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.7 NAT/DMZ NAT (Network Address Translation) is the translation of an Internet Protocol address (IP address) used within one network to a different IP address known within another network. One network is designated the inside network and the other is the outside. Typically, a company maps its local inside network addresses to one or more global outside IP addresses and reverse the global IP addresses of incoming packets back into local IP addresses.
  • Page 64 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Press NAT/DMZ to setup the parameters. If you want to enable the NAT/DMZ functions, click Enable. Enable the DMZ host Function is used the IP address assigned to the WAN for enabling DMZ function for the virtual IP address.

  • Page 65: Multi-Dmz

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.7.1 Multi-DMZ Some users who have two or more global IP addresses assigned by ISP can be used the multi DMZ. The table is for the mapping of global IP address and virtual IP address.

  • Page 66: Virtual Server

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.8 Virtual Server Click Virtual Server to configure the parameters. There have ten virtual server index form 1 to 10 can been set up.
  • Page 67 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Press Modify for modify index 1. Type the necessary parameters and then click OK. Press Restart to restart the router or press Continue to setup another function. For example: Specific ports on the WAN interface are re-mapped to services inside the LAN. As only 69.210.1.8 (e.g., assigned to WAN from ISP) is visible to the Internet, but does not actually...

  • Page 68: Firewall

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.9 Firewall A firewall is a set of related programs that protects the resources of a private network from other networks. It is helpful to users that allow preventing hackers to access its own private data resource accidentally.

  • Page 69: Basic Firewall Security

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.9.1 Basic Firewall Security Click Basic Firewall Security. This level only enables the NAT firewall and the remote management security. The NAT firewall will take effect if NAT function is enabled. The remote management security is default to block any WAN side connection to the device.

  • Page 70: Automatic Firewall Security

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.9.2 Automatic Firewall Security Click Automatic Firewall Security. This level enables basic firewall security, all DoS protection, and the SPI filter function. Press Finsih to finish setting firewall. The screen will prompt the parameters, which will be written in NVRAM. Check the parameters.

  • Page 71: Advanced Firewall Security

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.9.3 Advanced Firewall Security Click Advanced Firewall Security and then press Finish. A user can determine the security level for special purpose, environment and applications by configuring the DoS protection and defining an extra packet filter with higher priority than the default SPI filter.
  • Page 72 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Ping of Death: A ping of death (abbreviated ”POD”) attack attempts to crash your system by sending a fragmented packet, when reconstructed is larger than the maximum allowable size. Land attack: A land attack is an attempt to slow your network down by sending a packet with identical source and destination addresses originating from your network.
  • Page 73 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Packet filter Click Next can set up the packet filtering parameters. If you want to configure the Packet Filtering Parameters, choose Enable and press Add. It can setup the packet filter rule parameters: Select the Protocol and configure the parameter.
  • Page 74 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Press OK to finish. The screen will prompt the configured parameters. Click Enable on Trigger Packet Filtering Service item, to active the packet filtering service. You can modify or delete the access policies by click Modify or Delete command.

  • Page 75: Ip Qos

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.2.10 IP QoS IP QoS is a good function to decide which PCs can get the priorities to pass though router once if the bandwidth is exhausted or fully saturated. Click Enable at item Trigger IP QoS Service in General IP QoS Parameter, which will turn on this...
  • Page 76 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Click Add in the bottom of web page to begin a new entry in IP QoS Policy table. Description: A brief statement describe this policy Local IP: type IP address of local host in prioritized session.
  • Page 77 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Click Finish can make a review for all IP QoS parameter To let the IP QoS configuration you have changed and want those take effect immediately, please click Restart button to reboot the system. To continue the setup procedure, please click Continue...

  • Page 78: Status

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Status On STATUS item, you can monitor the following: SHDSL.bis Mode, Line rate, and Performance information including SNR margin, atteunation, and CRC error count. IP type, MAC address, IP address, Subnet mask, and DHCP client table: Type, IP address and MAC address.

  • Page 79: Shdsl.bis

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.3.1 SHDSL.bis The status information shows this is 4-wire model which have channel A and B. If the router have connected to remote side, it can also show the performance information of remote side.

  • Page 80: Lan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.3.2 LAN This information shows the LAN interface status and DHCP client table.

  • Page 81: Wan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.3.3 WAN This information shows all eight WAN interface.

  • Page 82: Route

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.3.4 ROUTE This information shows the IP routing table.

  • Page 83: Interface

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.3.5 INTERFACE This table shows the interface statistics.

  • Page 84: Firewall

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.3.6 FIREWALL This information shows fireware status: DoS protection and dropped packets statistics.

  • Page 85: Ip Qos

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.3.7 IP QoS This information shows IP QoS statistics.

  • Page 86: Stp

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.3.8 STP This information shows the STP parameter: The bridge parameters have: Bridge ID: The bridge ID of a configuration message is an 8-byte field. The six low order bytes are the MAC address of the switch. The high order two-byte (unsigned 16-bit integer) field is the bridge priority number.
  • Page 87 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Root Path Cost: The Cost of the Path to the Root from this Bridge, this is equal to the sum of the values of the Designated Cost and Path Cost parameters held for the Root Port. When the Bridge is the Root, this parameter is zero.

  • Page 88: Administration

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Administration This session introduces security and simple network management protocol (SNMP) and time synchronous. 6.4.1 Security For system secutiry, suggest to change the default user name and password in the first setup otherwise unauthorized persons can access the router and change the parameters.
  • Page 89 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Legal address pool will setup the legal IP addresses from which authorized person can configure the gateway. This is the more secure function for network administrator to setup the legal address of configuration.

  • Page 90: Snmp

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.4.2 SNMP Simple Network Management Protocol (SNMP) provides for the exchange of messages between a network management client and a network management agent for remote management of network nodes. These messages contain requests to get and set variables that exist in network nodes in order to obtain statistics, set configuration parameters, and monitor network events.

  • Page 91: Trap Host Pool

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Press Modify to modify the community pool. You can setup the access authority. SNMP Status: Enable Access Right: Deny for deny all access Read for access read only Write for access read and write.

  • Page 92: Time Sync

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.4.3 Time Sync ime synchronization is an essential element for any business, which relies on the IT system. The reason for this is that these systems all have clock that is the source of timer for their filing or operations.

  • Page 93: Sntp V4.0

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.4.3.2 SNTP v4.0 For using the SNTP, select SNTP v4.0. SNTP is the acronym for Simple Network Time Protocol, which is an adaptation of the Network Time Protocol (NTP) used to synchronize computer clocks in the Internet. SNTP can be used when the ultimate performance of the full NTP implementation.

  • Page 94: Utility

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Utility This section will describe the utility of the product including: SYSTEM INFO Show the system information CONFIG TOOL Load the factory default configuration, restore configuration and backup configuration UPGRADE Upgrade the firmware...

  • Page 95: Config Tool

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The browser will prompt the system information. There will display general system information including: MCSV, software version, chipset, firmware version, Host Name, System Time and System Up Time. MCSV: For internal identification purposes.

  • Page 96: Load Factory Default

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Choose the function and then press Finish 6.5.2.1 Load Factory Default Load Factory Default: It will load the factory default parameters to the router. Note: This action will change all of the settings to factory default value. On the other hand, you will lose all the existing configured parameters.

  • Page 97: Upgrade

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.5.3 Upgrade You can upgrade the gateway using the upgrade function. Press Upgrade in UTILITY. Select the firmware file name by click Browse on your PC or NB and press OK button to upgrade.

  • Page 98: Logout

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.5.4 Logout To logout the router, press LOGOUT in UTILITY. For logout system and close window, click the LOGOUT in UTILITY When click the Yes button, the Router will logout and browser window will be closed.
  • Page 99 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Press Restart to reboot the router. When the restart button been clicked, the router will restarting and the browser session will be disconnected. This may appear as if your browser session is hung up. After the router restarts, you...

  • Page 100: Example

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Example 6.6.1 LAN-to-LAN connection with bridge Mode STU-C (CO) STU-R (CPE) Bridge Bridge IP: 192.168.0.1 IP: 192.168.0.2 Netmask: 255.255.255.0 Netmask: 255.255.255.0 VPI:0, VCI:32 Encapsulation: LLC IP: 192.168.0.100 IP: 192.168.0.200 Netmask: 255.255.255.0 Netmask: 255.255.255.0 Gateway: 192.168.0.1...

  • Page 101: Cpe Side

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Enter WAN1 Parameters VPI: 0 VCI: 32 Click LLC Click Next The screen will prompt the new configured parameters. Check the parameters and Click Restart The router will reboot with the new setting.

  • Page 102: Lan To Lan Connection With Routing Mode

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 6.6.2 LAN to LAN connection with routing mode STU-C (CO) STU-R (CPE) Router Router IP: 192.168.20.1 IP: 192.168.10.1 IPoA or EoA Netmask: 255.255.255.0 Netmask: 255.255.255.0 VPI:0, VCI:32 Encapsulation: LLC IP: 192.168.30.1 IP: 192.168.30.2 Netmask: 255.255.255.0...

  • Page 103: Cpe Side

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Type the WAN1 Parameters; VPI: 0 VCI: 32 AAL5 Encap: LLC Protocol: IPoA , EoA , IPoA + NAT or EoA + NAT Note: The Protocol used in CO and CPE have to be the same.
  • Page 104 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Type LAN parameters: IP Address: 192.168.10.1 Subnet Mask: 255.255.255.0 Host Name: SOHO DHCP Service: Disable or Enable For more DHCP service, review the chapter of DHCP Service. Type the WAN1 Parameters: VPI: 0...
  • Page 105 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The screen will prompt the parameters that we will write in NVRAM. Check the parameters before writing in NVRAM. Press Restart to restart the router working with new parameters or press continue to setup another...

  • Page 106: Interface

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Configuration via Serial Console or Telnet with Manu Driven Interface In this section, the detail of menu-driven user interface will be described below line by line Introduction 7.1.1 Serial Console Check the connectivity of the RS-232 cable. Connect the male 9-pin end of console port of the router and connect the female end to a serial port of your computer.

  • Page 107: Operation Interface

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.1.3 Operation Interface For serial console and Telnet management, the Router implements two operational interfaces: Command Line Interface (CLI) and menu driven interface. The CLI mode provides users a simple interface, which is better for working with script file. The menu driven interface is a user-friendly interface to general operations.

  • Page 108: Menu Driven Interface Commands

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The following table shows the parameters in the brackets. Command Description <ip> An item enclosed in brackets is required. If the item is shown in lower case bold, it represents an object with special format. For example, <ip>...

  • Page 109: Main Menu Before Enable

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Main menu before enable When enter to menu on the following. All of the configuration commands are placed in the subdirectories of Enable protected by supervisor password. On the other hand, unauthorized user cannot change any configurations but viewing the status and configuration of the router and using ping command to make sure the router is working.

  • Page 110: Enable

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Enable To setup the router, move the cursor “ >>” to enable and press enter key. While the screen appears, type the supervisor password. The default supervisor password is root. The password will be prompted as “ * “ symbol for system security.

  • Page 111: Status

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Status You can view running system status of SHDSL.bis, WAN, route, interface, fireware, ip_qos and stp via status command. Move cursor “ >> “ to status and press enter. >> shdsl.bis Show SHDSL.bis status...

  • Page 112: Wan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.4.2 Wan Move cursor “ >> “ to Wan and press enter. ------------------------------------------------------------------------ Monitoring Window... IP address NetMask VPI/ VCI Encap Protocol Active ----- --------------- --------------- --- ----- ------ -------- ------ WAN1 192.168. 1. 1/255.255.255. 0...

  • Page 113: Interface

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.4.4 Interface Move cursor “ >> “ to Interface and press enter. ---------------------------------------------------------------------------- Monitoring Window... <Interface Statistics> Port InOctets InPackets OutOctets OutPackets InDiscards OutDiscards ---- ------------- ---------- ------------- ---------- ---------- ----------- WAN1 WAN2...

  • Page 114: Ip_Qos

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.4.6 IP_QoS Move cursor “ >> “ to IP_QoS and press enter. Select the Interface number from 0 to 8 ( 0 for LAN, 1 to 8 for WAN1 to WAN8) ----------------------------------------------------------------------------- Command: status ip_qos <0~8>...

  • Page 115: Stp

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.4.7 STP Move cursor “ >> “ to STP and press enter. ----------------------------------------------------------------------------- <STP Status> Bridge ID / Designated ROOT ID : 8000-000379-000001 / 8000-000379-000001 ROOT Port / ROOT Path Cost : None /...

  • Page 116: Show

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Show You can view the system information, configuration, and configuration in command script by show command. Move cursor “ >> “ to show and press enter. >> system Show general information config Show all configuration...
  • Page 117 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual test 11392 test 11392 test 11392 test 11392 test 11392 test 11392 test 11392 RIP Parameters <Generic RIP Parameters> RIP Mode : Disable Auto Summary: Disable <Interface RIP Parameters> Mode Ver Authenticate Poison Rev. Authenticate code...
  • Page 118 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual --- ---------------------------- (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) NAT Virtual IP Address Pool Base Address Count ---- ------------------ ------- (Empty) (Empty) (Empty) (Empty) (Empty) NAT Global IP Address Pool...
  • Page 119 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Configuration Generic Parameter Telnet Listening TCP Port : 23 Trust Host IP Address IP Address ---- ------------------ 0.0.0.0 (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty) (Empty)

  • Page 120: Configuration With Script Format

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.5.3 Configuration with Script format Move cursor to “ >> “ to script and press enter. You can view all setting using script format. --------------------------------------------------------------------------- Status Window... Showing System Configuration..setup mode Route setup shdsl.bis mode STU-R...
  • Page 121 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual setup wan 7 qos class UBR setup wan 7 qos pcr 11392 setup wan 7 qos scr 11392 setup wan 7 isp test test 10 setup wan 7 ip_type Dynamic setup wan 8 protocol Ethernet setup wan 8 address 192.168.8.1 255.255.255.0...
  • Page 122 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual setup dhcp generic gateway 192.168.0.1 setup dhcp generic netmask 255.255.255.0 setup dhcp generic ip_range 192.168.0.2 50 setup dhcp generic lease_time 72 setup dhcp generic name_server1 192.168.0.1 setup dhcp relay Disable 192.168.0.124 setup dns_proxy 168.95.1.1 168.95.192.1...

  • Page 123: Write

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Write For any changes of configuration, you must write the new configuration to NVRAM using write command and reboot the router to take affect. Move cursor to “ >> “ to write and press enter.

  • Page 124: Reboot

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Reboot To reboot the router, please use “reboot” command. Move cursor to “ >> “ to reboot and press enter. ---------------------------------------------------------------------- Command: reboot <CR> Message: Please input the following information. Do you want to reboot? (y/n): y ---------------------------------------------------------------------- Press “y”...

  • Page 125: Ping

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Ping Ping command will be used to test the Ethernet connection of router or Internet linking condition. Move cursor “ >> “ to ping and press enter. ---------------------------------------------------------------------- Command: ping <ip> [1~65534|-t] [1~1999] Message: Please input the following information.

  • Page 126: Administration

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Administration You can modify the user profile, security, SNMP (Sample Network Management Protocol), supervisor information and SNTP (Simple Network Time Protocol) in admin. The route is enable admin. For configuration the parameters, move the cursor “ >> “ to admin and press enter.

  • Page 127: Security

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The screen will prompt as follow: ------------------------------------------------------------------------ Command: admin user modify 5 profile <name> <pass_conf> Message: Please input the following information. Legal user name (ENTER for default) <superman>: tester Input the old Access password: **...

  • Page 128: Snmp

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.9.3 SNMP Simple Network Management Protocol (SNMP) is the protocol not only governing network management, but also the monitoring of network devices and their functions. The router can generate SNMP traps to indicate alarm conditions, and it relies on SNMP community strings to implement SNMP security.

  • Page 129: Supervisor Password And Id

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Move the cursor to edit and press enter, you can setup the following: Version: Disable, 1 or 2 Trap host IP address: Key in the IP address Community: Key in the string Move the cursor to list and press enter, you can view full listing on SNMP Trap Host Pool.

  • Page 130: Sntp

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.9.5 SNTP Time synchronization is an essential element for any business that relies on an IT system. The reason for this is that these systems all have clocks, which are the source of time for files or operations they handle.

  • Page 131: Status Window

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual You can configure three time servers in this system with time_server1, time_server2, and time_server3. The default time servers are the following: time_server1 : ntp-2.vt.edu time_server2 : ntp.drydog.com time_server3 : ntp1.cs.wisc.edu Move the cursor to update_rate and press enter.

  • Page 132: Utility

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.10 Utility There are three utility tools, upgrade, backup and restore, which embedded in the firmware. You can update the new firmware via TFTP upgrade tools and backup the configuration via TFTP backup tool and restore the configuration via TFTP restore tool. For operation on firmware upgrade and backup or restore the system configuration, you must have your own TFTP server software.

  • Page 133: Restore

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.10.3 Restore Move the cursor “ >> “ to restore and press enter. ------------------------------------------------------------------------ Command: utility restore <ip> <file> Message: Please input the following information. TFTP server IP address (ENTER for default) <192.168.0.2>: 192.168.0.150 Upgrade filename (ENTER for default) <default.bin>: backup002.bin...

  • Page 134: Exit

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.11 Exit If you want to exit the system without saving, use exit command to quit system. ------------------------------------------------------------------------ Command: exit <CR> Message: Please input the following information. Do you want to disconnect? (y/n): ------------------------------------------------------------------------ Press “y”...

  • Page 135: Setup

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.12 Setup All of the setup parameters are located in the subdirectories of setup. Move the cursor “ >> “ to setup and press enter. >> mode Switch system operation mode shdsl.bis Configure SHDSL.bis parameters...

  • Page 136: Wan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual You can setup the data rate by the multiple of 64Kbps where n is from 3 to 89. If the router is 4 wire models and doesn’t use on 2-wire mode, the line rate will double from 2-wire model’s setting.
  • Page 137 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual For dynamic IP of PPPoA and PPPoE, you do not need to setup IP address and subnet mask. There is a unique VPI and VCI value for Internet connection supported by ISP. The range of VIP is from 0 to 255 and VCI from 0 to 65535.

  • Page 138: Bridge

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.12.4 Bridge You can setup the bridge parameters in bridge command. If the product is configured as a router, you do not want to setup the bridge parameters. Move the cursor “ >> “ to bridge and press enter.

  • Page 139: Vlan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.12.5 VLAN Virtual LAN (VLAN) is defined as a group of devices on one or more LANs that are configured so that they can communicate as if they were attached to the same wire, when in fact they are located on a number of different LAN segments.

  • Page 140: Stp

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual The member ports are tagged members. Use PVID command to change the member port to untagged members To assign PVID (Port VID), move the cursor “>>” to PVID and press enter. The port index 1 to 4 represents LAN1 to LAN4 respectively and port index 5 to 12 represents WAN1 to WAN8.
  • Page 141 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual With Dynamic Routing, you can enable the Router to automatically adjust to physical changes in the network’s layout. The Cable/DSL Firewall Router, using the RIP protocol, determines the network packets’ route based on the fewest number of hops between the source and the destination.

  • Page 142: Lan

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual Authe command can configure authentication code. You can review the list of RIP parameters via list command. 7.12.9 LAN LAN interface parameters can be configured LAN IP address, subnet mask and NAT network type.
  • Page 143 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual You can create five virtual IP address pool range in range command. ---------------------------------------------------------------------- Command: setup ip_share nat virtual range <1~5> <ip> <1~253> Message: Please input the following information. NAT local address range entry number <1~5>: 1 Base address: 192.168.0.2...

  • Page 144: Pat

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual You can create up to 10 fixed NAT mapping entries via range command. ---------------------------------------------------------------------- Command: setup ip_share nat fixed modify <1~1o> <ip> <ip> Message: Please input the following information. Fixed NAT mapping entry number <1~10>: 1 Local address: 192.168.0.250...

  • Page 145: Dmz

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual ---------------------------------------------------------------------- Command: setup ip_share pat modify <1~10> Message: Please input the following information. Virtual server entry number <1~10>: 1 ---------------------------------------------------------------------- After key in enter, the screen will prompt as below. >> interface Active interface...

  • Page 146: Firewall

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.12.11 Firewall 7.12.11.1 Firewall security level The product supports advanced firewall. To setup the advanced firewall, you can use firewall to configure. >> Level Configure firewall security level pkt_filter Configure packet filter dos_protect Configure DoS protect There are three level of firewall, which you can setup in this product.

  • Page 147: Dos Protection

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual >> protocol Configure protocol type direction Configure direction mode src_ip Configure source IP parameter dest_ip Configure destination IP parameter port Configure port parameter (TCP and UDP only) tcp_flag Configure TCP flag (TCP only)
  • Page 148 GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual SYN flood: A SYN flood is a form of denial-of-service attack, attempts to slow your network by requesting new connections but not completing the process to open the connection. Once the buffer for these pending connections is full a server will not accept any more connections and will be unresponsive.

  • Page 149: Ipqos

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.12.12 IPQoS IP QoS is a function to decide the priorities of setting IPs to transfer packets under the situation of overloading bandwidth. To configure IP QoS function, move the cursor to IPQoS and press enter.

  • Page 150: Dhcp

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.12.13 DHCP Dynamic Host Configuration Protocol (DHCP) is a communication protocol that lets network administrators to manage centrally and automate the assignment of Internet Protocol (IP) addresses in an organization's network. Using the Internet Protocol, each machine that can connect to the Internet needs a unique IP address.

  • Page 151: Dns Proxy

    GRT-504 4-Wire G.SHDSL.bis Firewall Router User’s Manual 7.12.14 DNS proxy Enter the IP address via DNS proxy command. Move cursor “ >> “ to dns_proxy and press enter. ---------------------------------------------------------------------- Command: setup dns_proxy <IP> [IP] [IP] Message: Please input the following information.

  • Page 152: Ec Declaration Of Conformity

    EC Declaration of Conformity For the following equipment: *Type of Product : 4-wire G.SHDSL.bis Bridge Router w/4-port switch *Model Number : GRT-504 * Produced by: Manufacturer‘s Name: Planet Technology Corp. Manufacturer‘s Address: 11F, No. 96, Min Chuan. Road, Hsin Tien Taipei, Taiwan, R.O.C.

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