ZyXEL Communications Prestige 2802HW(L)-IX Manual

Prestige 2802HW(L)-Ix
Support Notes
Version 3.40
Jun. 2007

Prestige 2802HW(L)-Ix Support Notes
All contents copyright (c) 2007 ZyXEL Communications Corporation. 2
Index
Application Notes ..........................................................................................9
General Application Notes.....................................................................................9
Internet Connection................................................................................................9
Setup the Prestige as a DHCP Relay............................................................13
Configure an Internal Server Behind SUA..................................................15
Configure a PPTP server Behind SUA ........................................................16
Using NAT / Multi-NAT..............................................................................20
Using the Dynamic DNS (DDNS)...............................................................39
Network Management Using SNMP...........................................................41
Using syslog.................................................................................................48
Using IPAlias ..............................................................................................51
Using IP Multicast .......................................................................................53
Using Prestige traffic redirect......................................................................55
Using Universal Plug n Play (UPnP)...........................................................58
Wireless Application Notes..................................................................................64
Infrastructure mode......................................................................................64
Wireless MAC address filtering...................................................................68
WEP configuration (Wired Equivalent Privacy)..........................................70
Configuring 802.1x......................................................................................77
Site Survey...................................................................................................88
PSTN Lifeline Application Notes........................................................................92
Usage of PSTN Lifeline...............................................................................92
Lifeline configuration ..................................................................................93
Relay to PSTN .............................................................................................94
How to connect Lifeline and DSL connection.............................................94
VoIPApplication Notes........................................................................................96
Setup SIP Account.......................................................................................96
Peer to Peer call ...........................................................................................99
Phone port settings.....................................................................................103
Advanced voice settings configuration......................................................105
Phone book Speed dial...............................................................................108
Voice - QoS setup......................................................................................111
Call Forwarding setup................................................................................115
Voice – Common Settings.........................................................................118
FAQ .............................................................................................................119

Prestige 2802HW(L)-Ix Support Notes
All contents copyright (c) 2007 ZyXEL Communications Corporation. 3
ZyNOS FAQ ......................................................................................................119
What is ZyNOS?........................................................................................119
How do I access the embedded web configurator?....................................120
What is the default LAN IP address and Password? Moreover, how do I
change it?...................................................................................................120
How do I upload the ZyNOS firmware code via embeded web
configurator?..............................................................................................120
How do I upgrade/backup the ZyNOS firmware by using FTP client
program via LAN?.....................................................................................120
How do I upload or backup ROMFILE via web configurator?.................121
How do I backup/restore configurations by using FTP client program via
LAN?..........................................................................................................121
Why can't I make Telnet to Prestige from WAN?.....................................121
What should I do if I forget the system password?....................................122
What is SUA? When should I use SUA?...................................................122
What is the difference between NAT and SUA?.......................................122
How many network users can the SUA/NAT support?.............................123
What are Device filters and Protocol filters?.............................................123
Why can't I configure device filters or protocol filters?............................123
Product FAQ ......................................................................................................123
What is the Prestige Integrated Access Device?........................................123
Will the Prestige work with my Internet connection?................................124
What do I need to use the Prestige?...........................................................124
What is PPPoE? .........................................................................................124
Does the Prestige support PPPoE?.............................................................124
How do I know I am using PPPoE?...........................................................124
Why does my provider use PPPoE?...........................................................125
Which Internet Applications can I use with the Prestige? .........................125
How can I configure the Prestige?.............................................................125
What network interface does the Prestige support?...................................125
What can we do with Prestige?..................................................................125
Does Prestige support dynamic IP addressing? .........................................125
What is the difference between the internal IP and the real IP from my ISP?
....................................................................................................................125
How does e-mail work through the Prestige?............................................126
Is it possible to access a server running behind SUA from the outside
Internet? If possible, how?.........................................................................126

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What DHCP capability does the Prestige support?....................................126
How do I used the reset button, more over what field of parameter will be
reset by reset button? .................................................................................126
What network interface does the new Prestige series support?.................127
How does the Prestige support TFTP?.......................................................127
Can the Prestige support TFTP over WAN? ..............................................127
How fast can the data go?..........................................................................127
What is Multi-NAT? ..................................................................................128
When do I need Multi-NAT? .....................................................................128
What IP/Port mapping does Multi-NAT support? .....................................129
What is the difference between SUA and Multi-NAT? .............................130
What is BOOTP/DHCP?............................................................................130
What is DDNS?..........................................................................................130
When do I need DDNS service?................................................................131
What DDNS servers does the Prestige support?........................................131
What is DDNS wildcard?...........................................................................131
Does the Prestige support DDNS wildcard?..............................................131
Can the Prestige SUA handle IPsec packets sent by the VPN gateway
behind Prestige?.........................................................................................131
How do I setup my Prestige for routing IPsec packets over SUA?...........132
PSTN Lifeline FAQ ...........................................................................................132
What is P2802 and what is the difference between P2802HW and
P2802HWL? ..............................................................................................132
What does Lifeline mean? .........................................................................132
Do I need Lifeline? ....................................................................................132
Can I connect more than one phone on the phone port?............................132
Can I receive incoming PSTN call through P2802HWL ?........................132
Can I make an outgoing PSTN call through P2802HWL ?.......................133
VoIP FAQ...........................................................................................................133
What is Voice over IP?..............................................................................133
How does Voice over IP work?.................................................................133
Why use VoIP?..........................................................................................133
What is the relationship between codec and VoIP?...................................133
What advantage does Voice over IP can provide?.....................................134
What is the difference between H.323 and SIP?........................................134
Can H.323 and SIP interoperate with one another?...................................134
What is voice quality?................................................................................134

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How are voice quality normally rated?......................................................134
What is codec?...........................................................................................134
What is the relation of codec and VoIP? ...................................................135
What codec does Prestige support?............................................................135
Which codec should I choose?...................................................................135
What do I need in order to use SIP? ..........................................................135
Unable to register with the SIP server?......................................................136
I can register but can not establish a call?..................................................136
I can make a call but the voice only goes one way not bothway?.............136
I can receive a call but the voice only goes one way not bothway? ..........136
If all the about have been tried, but register still fail what should I do?....136
I suspect there is a hardware problem with my Prestige what should I do?137
Firewall FAQ .....................................................................................................137
What is a network firewall?.......................................................................137
What makes Prestige firewall secure? .......................................................137
What are the basic types of firewalls? .......................................................137
What kind of firewall is the Prestige?........................................................138
Why do you need a firewall when your router has packet filtering and
NAT built-in?.............................................................................................138
What is Denials of Service (DoS)attack?...................................................139
What is Ping of Death attack?....................................................................139
What is Teardrop attack?...........................................................................139
What is SYN Flood attack?........................................................................139
What is LAND attack?...............................................................................140
What is Brute-force attack? .......................................................................140
What is IP Spoofing attack?.......................................................................140
What are the default ACL firewall rules in Prestige?................................140
How can I protect against IP spoofing attacks?.........................................141
Content Filter FAQ ............................................................................................142
IPSec FAQ .........................................................................................................142
What is VPN? ............................................................................................142
Why do I need VPN?.................................................................................142
What are most common VPN protocols?...................................................143
What is PPTP? ...........................................................................................143
What is L2TP? ...........................................................................................143
What is IPSec?...........................................................................................143
What secure protocols does IPSec support? ..............................................144

Prestige 2802HW(L)-Ix Support Notes
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What are the differences between 'Transport mode' and 'Tunnel mode?...144
What is SA? ...............................................................................................144
What is IKE?..............................................................................................144
What is Pre-Shared Key?...........................................................................145
What are the differences between IKE and manual key VPN? .................145
What is Phase 1 ID for?.............................................................................145
What are Local ID and Peer ID?................................................................145
When should I use FQDN?........................................................................146
Is my Prestige ready for IPSec VPN?........................................................146
How do I configure Prestige VPN? ...........................................................146
How many VPN connections does Prestige support?................................146
What VPN protocols are supported by Prestige?.......................................147
What types of encryption does Prestige VPN support?.............................147
What types of authentication does Prestige VPN support? .......................147
I am planning my Prestige-to-Prestige VPN configuration. What do I need
to know?.....................................................................................................147
Does Prestige support dynamic secure gateway IP?..................................148
What VPN gateway that has been tested with Prestige successfully?.......148
What VPN software that has been tested with Prestige successfully?.......148
Will ZyXEL support Secure Remote Management?..................................149
Does Prestige VPN support NetBIOS broadcast? .....................................149
Is the host behind NAT allowed to use IPSec?..........................................149
Where can I configure Phase 1 ID in Prestige? .........................................149
If I have NAT router between two VPN gateways, and I would like to use
IP type as Phase 1 ID, what should I know?..............................................150
How can I keep a tunnel alive?..................................................................151
Single, Range, Subnet, which types of IP address do Prestige
10/10II/10W/50/100 support in VPN/IPSec? ............................................151
Can Prestige support IPSec passthrough?..................................................151
Can Prestige behave as a NAT router supporting IPSec passthrough and an
IPSec gateway simultaneously?.................................................................152
Wireless FAQ.....................................................................................................152
What is a Wireless LAN ? .........................................................................152
What are the advantages of Wireless LANs ? ...........................................152
What are the disadvantages of Wireless LANs ?.......................................153
Where can you find wireless 802.11 networks ? .......................................153
What is an Access Point ?..........................................................................153

Prestige 2802HW(L)-Ix Support Notes
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What is IEEE 802.11 ?...............................................................................153
What is 802.11b ? ......................................................................................154
How fast is 802.11b ?.................................................................................154
What is 802.11a ?.......................................................................................154
What is 802.11g ? ......................................................................................154
Is it possible to use products from a variety of vendors ?..........................154
What is Wi-Fi ?..........................................................................................155
What types of devices use the 2.4GHz Band ?..........................................155
Does the 802.11 interfere with Bluetooth devices ?..................................155
Can radio signals pass through walls ?......................................................155
What are potential factors that may causes interference among WLAN
products ?...................................................................................................155
What's the difference between a WLAN and a WWAN ?.........................156
What is Ad Hoc mode ?.............................................................................156
What is Infrastructure mode ?....................................................................156
How many Access Points are required in a given area ?...........................156
What is Direct-Sequence Spread Spectrum Technology – (DSSS) ?........156
What is Frequency-hopping Spread Spectrum Technology – (FHSS) ? ...157
Do I need the same kind of antenna on both sides of a link ?....................157
Why the 2.4 Ghz Frequency range ?..........................................................157
What is Server Set ID (SSID) ? .................................................................157
What is an ESSID ?....................................................................................157
How do I secure the data across an Access Point's radio link ?.................158
What is WEP ?...........................................................................................158
What is the difference between 40-bit and 64-bit WEP ?.......................158
What is a WEP key ? ..............................................................................158
A WEP key is a user defined string of characters used to encrypt and
decrypt data ?.............................................................................................158
Can the SSID be encrypted ?..................................................................158
By turning off the broadcast of SSID, can someone still sniff the SSID ?159
What are Insertion Attacks ?......................................................................159
What is Wireless Sniffer ? .........................................................................159
What is the difference between Open System and Shared Key of
Authentication Type ?................................................................................159
What is 802.1x ? ........................................................................................159
What is the difference between No authentication required, No access
allowed and Authentication required ?......................................................160

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What is AAA ?...........................................................................................160
What is RADIUS ?.....................................................................................160
What is WPA ?...........................................................................................160
What is WPA-PSK?...................................................................................161
Trouble Shooting .......................................................................................161
Using Embedded Packet Trace ..........................................................................161
Debug PPPoE Connection .................................................................................176
CLI Command List.....................................................................................187

Prestige 2802HW(L)-Ix Support Notes
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Application Notes
General Application Notes
Internet Connection
A typical Internet access application of the Prestige is shown below. For a small office, there are some
components needs to be checked before accessing the Internet.
•Before you begin
•Setting up the Windows
•Setting up the Prestige router
•Troubleshooting
•Before you begin
The Prestige is shipped with the following factory default:
1. IP address = 192.168.1.1, subnet mask = 255.255.255.0 (24 bits)
2. DHCP server enabled with IP pool starting from 192.168.1.33
3. Default SMT menu password = 1234
•Setting up the PC (Windows OS)
1. Ethernet connection
All PCs must have an Ethernet adapter card installed.

Prestige 2802HW(L)-Ix Support Notes
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•If you only have one PC, connect the PC's Ethernet adapter to the Prestige's LAN port with a
crossover (red one) Ethernet cable.
•If you have more than one PC, both the PC's Ethernet adapters and the Prestige's LAN port must
be connected to an external hub with straight Ethernet cable.
2. TCP/IP Installation
You must first install TCP/IP software on each PC before you can use it for Internet access. If you have already
installed TCP/IP, go to the next section to configure it; otherwise, follow these steps to install:
•In the Control Panel/Network window, click Add button.
•In the Select Network Component Type windows, select Protocol and click Add.
•In the Select Network Protocol windows, select Microsoft from the manufacturers, then select
TCP/IP from the Network Protocols and click OK.
3. TCP/IP Configuration
Follow these steps to configure Windows TCP/IP:
•In the Control Panel/Network window, click the TCP/IP entry to select it and click Properties
button.
•In the TCP/IP Properties window, select obtain an IP address automatically.
Note: Do not assign arbitrary IP address and subnet mask to your PCs, otherwise, you will not be able to access
the Internet.
•Click the WINS configuration tab and select Disable WINS Resolution.
•Click the Gateway tab. Highlight any installed gateways and click the Remove button until there
are none listed.
•Click the DNS Configuration tab and select Disable DNS.
•Click OK to save and close the TCP/IP properties window
•Click OK to close the Network window. You will be prompted to insert your Windows CD or disk.
When the drivers are updated, you will be asked if you want to restart the PC. Make sure your
Prestige is powered on before answering Yes to the prompt. Repeat the above steps for each
Windows PC on your network.
•Setting up the Prestige router