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  • GreatSpeed (GreatSpeed, a RIAS Company ) : GS-R250S Firewall

    GS-R 250 S ADSL Router with Firewall

    GS-R250S Firewall - GreatSpeed ADSL Router with Firwall GreatSpeed's GS-R250S Firewall is an an Ethernet ADSL router with built-in robust firewall to provide critical network security service and heightened protection for broadband Internet access. It also supports applications such as Multiple IPSec/PPTP/L2TP Tunnel Pass Through, MS NetMeeting,MSN Messenger (w/UPnP).


    ADSL Standards:

    • ANSI T1.413 Issue 2, ITU 992.1 (G.dmt), ITU 992.2 (G.Lite)
    • ITU G.994.1 (G.hs) automatic mode sensing

    Data Rates:

    • Full Rate: Up to 8Mbps downstream/800Kbps upstream
    • G.Lite: Up to 1.5Mbps downstream/512Kbps upstream
    • Automatic rate adaptation in 32Kbps step

    ATM Standards:

    • ATM Adaptation Layer 5 (AAL5)
    • Up to 8 Virtual Circuit Connections (VCC)
    • Class of Services: UBR, CBR
    • ITU I.610 OAM F4/F5 Loopback

    WAN Protocols:

    • LLC Encapsulation and VC Multiplexing
    • IETF RFC1483/2684 Multiprotocols over ATM
    • IETF RFC1577 Classical IP over ATM
    • IETF RFC2516 PPP over Ethernet
    • IETF RFC2364 PPP over ATM

    Routing Protocols:

    • Static Route and Dynamic Route: RIP V1 and RIP V2
    • Dynamic Host Configuration Protocol (DHCP) Server, Client and Relay
    • DNS Relay Agent, DNS Client
    • Network Address Translation (NAT)/Network Address Port Translation (NAPT)
    • Point-to-Point Protocol (PPP)
    • Universal Plug-and-Play (UPnP) NAT traversal
    Bridging Protocols:
    • IEEE 802.1d Transparent Bridging
    • Spanning Tree Algorithm (STA)
    • Up to 128 Learning MAC addresses
    • Bridge filter function
    • IETF RFC2516 PPP over Ethernet Relay
    • IETF RFC1483/2684 Bridged
    Application Support :
    • Multiple IPSec/PPTP/L2TP Tunnel Pass Through
    • MS Netmeeting
    • MSN Messenger (w/UPnP)
    • Online Gaming
    • Peer-to-peer file transfer
    • HTTP server

    Network Management:

    • Embedded Web-based Graphical User Interface (GUI) configuration tool
    • Built-in Configuartion Wizard
    • Console Command Line access via serial interface or remote telnet
    • Firmware update and configuration backup via Web-based GUI
    • TFTP firmware upgrade
    • Configuration backup and restore
    • Automatic timer for enabling remote admin task
    • Comprehensive device status on web-based GUI
    • SNMP V1 agent


    • Stateful Firewall and Package Filtering
    • Intrusion Detection System (IDS)
    • DoS (Denial of Service) Prevention
    • IDS Alerting via email
    • ICSA Labs Residential Firewall 4.0 certified
    • PPP: Challenge Handshake Authentication Protocol (CHAP) and Password Authentication Protocol (PAP)
    • Password-protected access for console, Telnet and Web GUI configuration tool

    Hardware Specifications:

    • LAN: Ethernet 10/100BaseT auto-sensing
    • WAN: RJ-11 ADSL Line
    • Console: RS-232 serial port
    • Power ON/OFF switch
    • Dimensions: (W x L x H): 6.88" x 6" x 1.44"
    Hardware Features:
    • Ethernet ports MDI/MDI-X auto crossover
    • Reset Button for restoring factory default configuration

    LED Status Indicators:

    • Power
    • ADSL: ADSL, Activity
    • LAN: Eth/Act, 10/100

    Power Requirement:

    • Input: 100 ~ 110 VAC (100 ~ 240 VAC, optional), 60Hz, 0.5A
    • Output: +12 VDC, 1A


    • FCC part 15 class B
    • ITU-T K.21 standard compliant

    Package Contents:

    • GS-R250S Firewall ADSL Router
    • RJ-11 ADSL cable
    • RJ-45 Ethernet cable
    • RS-232 serial cable
    • Power adapter
    • Getting Started Guide
    • Installation Guide
    • Firewall Configuration Guide

    Specifications are subject to change without notice.

    Technology: ADSL (G.992.1)
    Linux support: Yes

    external WWW: GreatSpeed, a RIAS Company : http://www.greatspeed.com/products/r250s_fw.htm http://www.greatspeed.com/products/r250s_fw.htm

    external PDF: GreatSpeed, a RIAS Company : http://www.greatspeed.com/pdf/specs/gs-r250sFw.pdf http://www.greatspeed.com/pdf/specs/gs-r250sFw.pdf

    If you are the producer of this modem / NIC and want to correct/update the presented information, please feel free to register for direct database access.
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