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P-660H-Tx v2 Series
ADSL2+ 4-port Gateway
Support Notes
Version3.40
Feb. 2007
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P-660H-Tx v2 Support Notes FAQ .................................................................................................................4 ZyNOS FAQ.................................................................................................4 1. What is ZyNOS? ...................................................................................4 2. What’s Multilingual Embedded Web Configurator?...............................4 3. How do I acc
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P-660H-Tx v2 Support Notes 17. What do the ATM QoS Types (CBR, UBR, VBR-nRT, VBR-RT) mean? ................................................................................................................14 18. What is content filter? .......................................................................15 ADSL FAQ.................................................................................................16 1. How does ADSL compare to Cable modem
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P-660H-Tx v2 Support Notes General Application Notes...................................................................27 1. Internet Access Using P-660H-Tx v2 under Bridge mode ....27 2. Internet Access Using P-660H-Tx v2 under Routing mode ..29 3. Setup the P-660H-Tx v2 as a DHCP Relay ..........................31 4. SUA Notes............................................................................32 5. Using Full Feature NAT ..................
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P-660H-Tx v2 Support Notes FAQ ZyNOS FAQ 1. What is ZyNOS? ZyNOS is ZyXEL's proprietary Network Operating System. It is the platform on all Prestige routers that delivers network services and applications. It is designed in a modular fashion so it is easy for developers to add new features. New ZyNOS software upgrades can be easily downloaded from our FTP sites as they become available. 2. What’s Multilingual Embedded Web Configurator? Multilin
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P-660H-Tx v2 Support Notes a. Use the TELNET client program in your PC to login to your P-660H-Tx v2. b. Enter CI command 'sys stdio 0' to disable Stdio idle timeout c. To upgrade firmware, use TFTP client program to put firmware in file 'ras' in the Prestige. After data transfer is finished, the P-660H-Tx v2 will program the upgraded firmware into FLASH ROM and reboot itself. d. To backup your firmware, use the TFTP client program to get file 'ra
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P-660H-Tx v2 Support Notes 9. What is SUA? When should I use SUA? SUA (Single User Account) is a unique feature supported by Prestige router which allows multiple people to access Internet concurrently for the cost of a single user account. When Prestige acting as SUA receives a packet from a local client destined for the outside Internet, it replaces the source address in the IP packet header with its own address and the source port in the TCP o
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P-660H-Tx v2 Support Notes 11. Is it possible to access a server running behind SUA from the outside Internet? How can I do it? Yes, it is possible because P-660H-Tx v2 delivers the packet to the local server by looking up to a SUA server table. Therefore, to make a local server accessible to the outside users, the port number and the inside IP address of the server must be configured. (You can configure it in Web Configurator, Advanced Setup, Netw
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P-660H-Tx v2 Support Notes • Many One-to-One: In Many One-to-One mode, the P-660H-Tx v2 maps each ILA to unique IGA. • Server: In Server mode, the P-660H-Tx v2 maps multiple inside servers to one global IP address. This allows us to specify multiple servers of different types behind the NAT for outside access. Note：if you want to map each server to one unique IGA please use the One-to-One mode. The following table summarizes the five types. NAT
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P-660H-Tx v2 Support Notes 16. How can I protect against IP spoofing attacks? The P-660H-Tx v2's filter sets provide a means to protect against IP spoofing attacks. The basic scheme is as follows: For the input data filter: • Deny packets from the outside that claim to be from the inside • Allow everything that is not spoofing us Filter rule setup: • Filter type =TCP/IP Filter Rule • Active =Yes • Source IP Addr =a.b.c.d • Source IP Mask
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P-660H-Tx v2 Support Notes Product FAQ 1. How can I manage P-660H-Tx v2? Multilingual Embedded Web GUI for Local and Remote management CLI (Command-line interface) Telnet support (Administrator Password Protected ) for remote configuration change and status monitoring FTP/ TFTP sever, firmware upgrade and configuration backup and restore are supported(Administrator Password Protected) 2. What is the default password for We
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P-660H-Tx v2 Support Notes 4. How do I know the P-660H-Tx v2's WAN IP address assigned by the ISP? You can view "My WAN IP : x.x.x.x" shown in Web Configurator ‘Status->Device Information ->WAN Information’ to check this IP address. 5. What is the micro filter or splitter used for? Generally, the voice band uses the lower frequency ranging from 0 to 4KHz, while ADSL data transmission uses the higher frequency. The micro filter acts as
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P-660H-Tx v2 Support Notes 9. What is DDNS? The Dynamic DNS service allows you to alias a dynamic IP address to a static hostname, allowing your computer to be more easily accessed from various locations on the Internet. To use the service, you must first apply an account from several free Web servers such as http://www.dyndns.org/. Without DDNS, we always tell the users to use the WAN IP of the P-660H-Tx v2 to reach our internal server. It is inc
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P-660H-Tx v2 Support Notes and source port for the host. To pass IPSec packets, SUA must understand the ESP packet with protocol number 50, replace the source IP address of the IPSec gateway to the router's WAN IP address. However, SUA should not change the source port of the UDP packets which are used for key managements. Because the remote gateway checks this source port during connections, the port thus is not allowed to be changed. 13. How do
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P-660H-Tx v2 Support Notes 15. Why do we perform traffic shaping in the P-660H-Tx v2? The P-660H-Tx v2 must manage traffic fairly and provide bandwidth allocation for different sorts of applications, such as voice, video, and data. All applications have their own natural bit rate. Large data transactions have a fluctuating natural bit rate. The P-660H-Tx v2 is able to support variable traffic among different virtual connections. Certain traffic may
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P-660H-Tx v2 Support Notes Variable bit rate(VBR): An ATM bandwidth-allocation service that allows users to specify a throughput capacity (i.e., a peak rate) and a sustained rate but data is not sent evenly. You can select VBR for bursty traffic and bandwidth sharing with other applications. It contains two subclasses: Variable bit rate nonreal time (VBR-nRT): Variable bit rate real time (VBR-RT): 18. What is content filter? Internet Cont
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P-660H-Tx v2 Support Notes ADSL FAQ 1. How does ADSL compare to Cable modems? ADSL provides a dedicated service over a single telephone line; cable modems offer a dedicated service over a shared media. While cable modems have greater downstream bandwidth capabilities (up to 30 Mbps), that bandwidth is shared among all users on a line, and will therefore vary, perhaps dramatically, as more users in a neighborhood get online at the same time.
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P-660H-Tx v2 Support Notes 4. How do I know the ADSL line is up? You can see the DSL LED Green on the P-660H-Tx v2's front panel is on when the ADSL physical layer is up. 5. How does the P-660H-Tx v2 work on a noisy ADSL? Depending on the line quality, the P-660H-Tx v2 uses "Fall Back" and "Fall Forward" to automatically adjust the date rate. 6. Does the VC-based multiplexing perform better than the LLC-based multiplexing? Though the LLC-based m
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P-660H-Tx v2 Support Notes 8. What are the signaling pins of the ADSL connector? The signaling pins on the P-660H-Tx v2's ADSL connector are pin 3 and pin 4. The middle two pins for a RJ11 cable. 9. What is triple play? More and more Telco/ISPs are providing three kinds of services (VoIP, Video and Internet) over one existing ADSL connection. • The different services (such as video, VoIP and Internet access) require different Qulity of Servic
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P-660H-Tx v2 Support Notes Firewall FAQ General 1. What is a network firewall? A firewall is a system or group of systems that enforces an access-control policy between two networks. It may also be defined as a mechanism used to protect a trusted network from an untrusted network. The firewall can be thought of two mechanisms: One to block the traffic, and the other to permit traffic. 2. What makes P-660H-Tx v2 secure? The P-660H-Tx v2 is pre
