ZyXEL Communications AMG1202-T10B Handbuch

AMG1202-T10B/AMG1302-T10B

Support Notes

AMG1202-T10B/AMG1302-T10B

Wireless N-Lite ADSL2+ 4-port Gateway

Support Notes

Version 1.00

Jan. 2013

AMG1202-T10B/AMG1302-T10B

Support Notes

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

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

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

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

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

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

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

'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

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.

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