ZyXEL Communications AMG1202-T10B Manual

AMG1202-T10B/AMG1302-T10B
Support Notes
1
All contents copyright © 2013 ZyXEL Communications Corporation.
AMG1202-T10B/AMG1302-T10B
Wireless N-Lite ADSL2+ 4-port Gateway
Support Notes
Version 1.00
Jan. 2013

AMG1202-T10B/AMG1302-T10B
Support Notes
2
All contents copyright © 2013 ZyXEL Communications Corporation.
Foreward.........................................................................................................6
FAQ .................................................................................................................6
System FAQ................................................................................................6
1. How do I access the AMG1202-T10B/AMG1302-T10B Command
Line Interface (CLI)?...............................................................................6
2. How do I update the firmware and configuration file? ....................6
3. What should I do if I forget the system password?.........................6
4. How to use the Reset button?...........................................................7
5. What is SUA? When should I use SUA?...........................................7
6. Is it possible to access a server running behind SUA from the
outside Internet? How can I do it? ........................................................7
7. What IP/Port mapping does Multi-NAT support?.............................8
8. How many network users can the SUA/NAT support?....................8
9. What are Device filters and Protocol filters?....................................8
10. How can I protect against IP spoofing attacks? ............................9
Product FAQ.............................................................................................10
1. How can I manage AMG1202-T10B/AMG1302-T10B?....................10
2. What is the default password for Web Configurator?...................10
3. What’s the difference between ‘Common User Account’ and
‘Administrator Account’?.....................................................................10
4. How do I know the AMG1202-T10B/AMG1302-T10B’s WAN IP
address assigned by the ISP?.............................................................10
5. What is the micro filter or splitter used for? ..................................11
6. The AMG1202-T10B/AMG1302-T10B supports Bridge and Router
mode, what's the difference between them?......................................11
7. How do I know I am using PPPoE?.................................................11
8. Why does my provider use PPPoE? ...............................................11
9. What is DDNS?..................................................................................11
10. When do I need DDNS service?.....................................................12
11. What is DDNS wildcard? Does the
AMG1202-T10B/AMG1302-T10B support DDNS wildcard?...............12
12. What is Traffic Shaping?................................................................12
13. Why do we perform traffic shaping in the AMG1202-T10B
/AMG1302-T10B?..................................................................................13
14. What do the parameters (PCR, SCR, MBS) mean?......................13
15. What do the ATM QoS Types (CBR, UBR, VBR-nRT, VBR-RT)
mean?....................................................................................................13
16. What is content filter?....................................................................14
ADSL FAQ.................................................................................................15
1. How does ADSL compare to Cable modems? ...............................15
2. What is the expected throughput?..................................................15
3. What is the microfilter used for?.....................................................15
4. How do I know the ADSL line is up?...............................................15

AMG1202-T10B/AMG1302-T10B
Support Notes
3
All contents copyright © 2013 ZyXEL Communications Corporation.
5. How does the AMG1302-T10B /AMG1202-T10B work on a noisy
ADSL?....................................................................................................16
6. Does the VC-based multiplexing perform better than the
LLC-based multiplexing?.....................................................................16
7. How do I know the details of my ADSL line statistics?.................16
8. What are the signaling pins of the ADSL connector? ...................16
9. What is triple play?...........................................................................16
Firewall FAQ .............................................................................................18
General ..................................................................................................18
1. What is a network firewall?...................................................18
2. What makes AMG1302-T10B /AMG1202-T10B secure?.....18
3. What are the basic types of firewalls?..................................18
4. What kind of firewall in the AMG1302-T10B/AMG1202-T10B?
.................................................................................................19
5. Why do you need a firewall when your router has packet
filtering and NAT built-in?.........................................................19
6. What is Denials of Service (DoS) attack?.............................20
7. What is Ping of Death attack? ..............................................20
8. What is Teardrop attack? .....................................................20
9. What is SYN Flood attack?...................................................20
10. What is LAND attack? ........................................................21
11 What is Brute-force attack?.................................................21
12. What is IP Spoofing attack? ...............................................21
13. What are the default ACL firewall rules in AMG1302-T10B
/AMG1202-T10B?.....................................................................21
Configuration........................................................................................22
1. How do I configure the firewall? ...........................................22
2. How do I prevent others from configuring my firewall?.........22
3. Why can't I configure my AMG1302-T10B/AMG1202-T10B
using Web Configurator/Telnet over WAN?..............................22
4. Why can't I upload the firmware and configuration file using
FTP over WAN? .......................................................................24
Log and Alert.........................................................................................24
1. When does the AMG1302-T10B/AMG1202-T10B generate the
firewall log? ..............................................................................24
2. What does the log show to us? ............................................24
3. How do I view the firewall log? .............................................25
4. When does the AMG1302-T10B/AMG1202-T10B generate the
firewall alert? ............................................................................25
5. What is the difference between the log and alert?................26
Wireless FAQ............................................................................................26
General FAQ..........................................................................................26
1. What is a Wireless LAN?......................................................26
2. What are the advantages of Wireless LAN?.........................26

AMG1202-T10B/AMG1302-T10B
Support Notes
4
All contents copyright © 2013 ZyXEL Communications Corporation.
3. What is the disadvantage of Wireless LAN?.........................27
4. Where can you find 802.11 wireless networks? ...................27
5. What is an Access Point?.....................................................27
6. Is it possible to use wireless products from a variety of vendors?
.................................................................................................27
7. What is Wi-Fi?......................................................................28
8. What types of devices use the 2.4GHz Band? .....................28
9. Does the 802.11 interfere with Bluetooth device? ................28
10. Can radio signals pass through wall?.................................28
11. What are potential factors that may causes interference
among WLAN products? ..........................................................29
12. What's the difference between a WLAN and a WWAN?.....29
13. Can I manually swap the wireless module without damage
any hardware?..........................................................................29
14. What wireless security mode does AMG1302-T10B
/AMG1202-T10B support?........................................................30
15. What Wireless standard does AMG1302-T10B
/AMG1202-T10B support?........................................................30
16. Does AMG1302-T10B/AMG1202-T10B support MAC filtering?
.................................................................................................30
17. Does AMG1302-T10B/AMG1202-T10B support auto rate
adaption?..................................................................................30
Advanced FAQ..........................................................................................31
1. What is Ad Hoc mode?.........................................................31
2. What is Infrastructure mode? ...............................................31
3. How many Access Points are required in a given area? ......31
4. What is Direct-Sequence Spread Spectrum Technology –
(DSSS)?...................................................................................31
5. What is Frequency-hopping Spread Spectrum Technology –
(FHSS)? ...................................................................................32
6. Do I need the same kind of antenna on both sides of a link?32
7. Why the 2.4 GHZ Frequency range?....................................32
8. What is Server Set ID (SSID)? .............................................32
9. What is an ESSID?...............................................................33
Security FAQ.............................................................................................34
1. How do I secure the data across the AMG1302-T10B
/AMG1202-T10B Access Point's radio link?.............................34
2. What is WEP? ......................................................................34
3. What is WPA-PSK?..............................................................34
4. What is the difference between 40-bit and 64-bit WEP? ......34
5. What is a WEP key?.............................................................35
6. Will 128-bit WEP communicate with 64-bit WEP?................35
7. Can the SSID be encrypted?................................................35

AMG1202-T10B/AMG1302-T10B
Support Notes
5
All contents copyright © 2013 ZyXEL Communications Corporation.
8. by turning off the broadcast of SSID, can someone still sniff
the SSID?.................................................................................35
9. What are Insertion Attacks? .................................................36
10. What is Wireless Sniffer? ...................................................36
Application Notes ........................................................................................37
General Application Notes.......................................................................37
1. Internet Access Using AMG1302-T10B/AMG1202-T10B under
Bridge mode.............................................................................37
2. Internet Access Using AMG1302-T10B/AMG1202-T10B under
Routing mode...........................................................................40
3. Setup the AMG1302-T10B/AMG1202-T10B as a DHCP Relay
.................................................................................................43
4. SUA Notes............................................................................43
5. Using the Dynamic DNS (DDNS) .........................................53
6. QoS (802.1Q).......................................................................54
7. Network Management Using SNMP.....................................55
8. Using syslog.........................................................................58
9. Using IP Alias.......................................................................58
10. Using Call Scheduling ........................................................60
11. Using IP Multicast...............................................................61
Wireless Application Notes.....................................................................63
1. Configure a Wireless Client to Ad hoc mode........................63
2. MAC Filter ............................................................................69
3. Site Survey...........................................................................71
4. Configure 802.1x and WPA..................................................74
5. WPS/WLAN Button...............................................................78
Support Tool.................................................................................................79
1. Capture the detailed logs by Hyper Terminal ....................................79
CI Command Reference ..............................................................................82
Command Syntax and General User Interface.......................................82

AMG1202-T10B/AMG1302-T10B
Support Notes
6
All contents copyright © 2013 ZyXEL Communications Corporation.
Foreward
This support note content covers the AMG1202-T10B/AMG1302-T10B In the
following example, the print screen of diagrams are AMG1202-T10B
FAQ
System FAQ
1. How do I access the AMG1202-T10B/AMG1302-T10B Command Line
Interface (CLI)?
The Command Line Interface is for the Administrator use only, and it could be
accessed via telnet session.
Note: It is protected by super password, ‘1234’ by factory default.
2. How do I update the firmware and configuration file?
You can do this via accessing web GUI of AMG1202-T10B/AMG1302-T10B as
Administrator. Firmware update function is under Maintanance -> Firmware
Upgrade. Configuration update function is under Maintanance ->
Backup/Restore.
3. What should I do if I forget the system password?
In case you forget the system password, you can erase the current
configuration and restore factory defaults this way:

AMG1202-T10B/AMG1302-T10B
Support Notes
7
All contents copyright © 2013 ZyXEL Communications Corporation.
Use the RESET button on the rear panel of AMG1202-T10B/AMG1302-T10B
to reset the router. After the router is reset, the LAN IP address will be reset to
'192.168.1.1', the common user password will be reset to '1234', and the
Administrator password will be reset to ‘1234’.
4. How to use the Reset button?
a. Turn your AMG1202-T10B/AMG1302-T10Bon. Make sure the POWER
led is on (not blinking)
b. Press the RESET button for longer than one second and shorter than
five seconds and release it.
c. Press the RESET button for six seconds and then release it. If the
POWER LED begins to blink, the default configuration has been
restored and the AMG1202-T10B/AMG1302-T10B restarts.
5. 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 or UDP header with
another value chosen out of a local pool. It then recomputed the appropriate
header checksums and forwards the packet to the Internet as if it is originated
from Prestige using the IP address assigned by ISP. When reply packets from
the external Internet are received by Prestige, the original IP source address
and TCP/UDP source port numbers are written into the destination fields of the
packet (since it is now moving in the opposite direction), the checksums are
recomputed, and the packet is delivered to its true destination. This is because
SUA keeps a table of the IP addresses and port numbers of the local systems
currently using it.
6. Is it possible to access a server running behind SUA from the outside
Internet? How can I do it?
Yes, it is possible because AMG1202-T10B/AMG1302-T10B 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, Network Setting-> NAT -> Port
Forwarding).

AMG1202-T10B/AMG1302-T10B
Support Notes
8
All contents copyright © 2013 ZyXEL Communications Corporation.
7. What IP/Port mapping does Multi-NAT support?
Multi-NAT supports five types of IP/port mapping: One to One, Many to One,
Many to Many Overload, Many to Many No Overload and Server. The details
of the mapping between ILA and IGA are described as below. Here we define
the local IP addresses as the Internal Local Addresses (ILA) and the global IP
addresses as the Inside Global Address (IGA),
One to One: In One-to-One mode, the
AMG1202-T10B/AMG1302-T10B maps one ILA to one IGA.
Many to One: In Many-to-One mode, the
AMG1202-T10B/AMG1302-T10B maps multiple ILA to one IGA. This is
equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single
User Account feature (the SUA is optional in today's Prestige routers).
Many to Many Overload: In Many-to-Many Overload mode, the
AMG1202-T10B/AMG1302-T10B maps the multiple ILA to shared IGA.
Many One-to-One: In Many One-to-One mode, the
AMG1202-T10B/AMG1302-T10B maps each ILA to unique IGA.
Server: In Server mode, the AMG1202-T10B/AMG1302-T10B 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.
8. How many network users can
the SUA/NAT support?
The Prestige does not limit the number
of the users but the number of the
sessions. The
AMG1202-T10B/AMG1302-T10B
supports 8192 sessions.
9. What are Device filters and
Protocol filters?
The filters have been separated into
two groups. One group is called
'device filter group', and the other is
called 'protocol filter group'. Generic
filters belong to the 'device filter group',
TCP/IP and IPX filters belong to the
NAT Type
IP Mapping
One-to-One
ILA1<--->IGA1
Many-to-One
(SUA/PAT)
ILA1<--->IGA1
ILA2<--->IGA1
...
Many-to-Many
Overload
ILA1<--->IGA1
ILA2<--->IGA2
ILA3<--->IGA1
ILA4<--->IGA2
...
Many
One-to-One
ILA1<--->IGA1
ILA2<--->IGA2
ILA3<--->IGA3
ILA4<--->IGA4
...
Server
Server 1 IP<--->IGA1
Server 2 IP<--->IGA1

AMG1202-T10B/AMG1302-T10B
Support Notes
9
All contents copyright © 2013 ZyXEL Communications Corporation.
'protocol filter group'. You can configure the filter rule in CLI.
10. How can I protect against IP spoofing attacks?
The AMG1202-T10B/AMG1302-T10B’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 =w.x.y.z
Action Matched =Drop
Action Not Matched =Forward
Where a.b.c.d is an IP address on your local network and w.x.y.z is your
netmask:
For the output data filters:
Deny bounce back packet
Allow packets that originate from us
Filter rule setup:
Filter Type =TCP/IP Filter Rule
Active =Yes
Destination IP Addr =a.b.c.d
Destination IP Mask =w.x.y.z
Action Matched =Drop
Action Not Matched =Forward
Where a.b.c.d is an IP address on your local network and w.x.y.z is your
netmask.

AMG1202-T10B/AMG1302-T10B
Support Notes
10
All contents copyright © 2013 ZyXEL Communications Corporation.
Product FAQ
1. How can I manage AMG1202-T10B/AMG1302-T10B?
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
2. What is the default password for Web Configurator?
There are two different accounts for AMG1202-T10B/AMG1302-T10B Web
Configurator: Common User Account and Administrator Account.
By factory default the password for the two accounts are:
Common User Account: 1234
Administrator Account: 1234.
You can change the password after you logging in the Web Configurator.
Please record your new password whenever you change it. The system
will lock you out if you have forgotten your password.
3. What’s the difference between ‘Common User Account’and
‘Administrator Account’?
For Common User Account, it can only access the status monitor of
AMG1202-T10B/AMG1302-T10B and check the current system status.
For Administrator Account, besides accessing the status monitor of
AMG1202-T10B/AMG1302-T10B, it can also access Wizard setup/ Advanced
setup of AMG1202-T10B/AMG1302-T10B:
Moreover, only with Administrator Password, you could manage the
AMG1202-T10B/AMG1302-T10B via FTP/TFTP or Telnet.
4. How do I know the AMG1202-T10B/AMG1302-T10B’s WAN IP
address assigned by the ISP?
You can view "My WAN IP <from ISP> : x.x.x.x" shown in Web Configurator
‘Status->Device Information ->WAN Information’ to check this IP address.