ZyXEL Communications P-660HW-TX

P-660HW-Tx v2 Series Support Notes

17. What do the ATM QoS Types (CBR, UBR, VBR-nRT, VBR-RT) mean?

................................................................................................................16

18. What is content filter? .......................................................................17

ADSL FAQ.................................................................................................18

1. How does ADSL compare to Cable modems?....................................18

2. What is the expected throughput?...................................................... 18

3. What is the microfilter used for? .........................................................18

4. How do I know the ADSL line is up?...................................................18

5. How does the P-660HW-Tx v2 work on a noisy ADSL?..................... 18

6. Does the VC-based multiplexing perform better than the LLC-based

multiplexing?...........................................................................................19

7. How do I know the details of my ADSL line statistics?........................19

8. What are the signaling pins of the ADSL connector?..........................19

9. What is triple play? .............................................................................19

Firewall FAQ .............................................................................................21

General...................................................................................................21

1. What is a network firewall?...................................................21

2. What makes P-660HW-Tx v2 secure? .................................21

3. What are the basic types of firewalls?.................................. 21

4. What kind of firewall is the P-660HW-Tx v2? .......................22

5. Why do you need a firewall when your router has packet

filtering and NAT built-in?......................................................... 22

6. What is Denials of Service (DoS) attack?.............................22

7. What is Ping of Death attack?.............................................. 23

8. What is Teardrop attack? .....................................................23

9. What is SYN Flood attack?...................................................23

10. What is LAND attack? ........................................................23

11 What is Brute-force attack? .................................................24

12. What is IP Spoofing attack? ...............................................24

13. What are the default ACL firewall rules in P-660HW-Tx v2?

.................................................................................................24

Configuration ..........................................................................................24

1. How do I configure the firewall? ...........................................24

2. How do I prevent others from configuring my firewall?.........24

3. Why can't I configure my P-660HW-Tx v2 using Web

Configurator/Telnet over WAN? ...............................................25

4. Why can't I upload the firmware and configuration file using

FTP over WAN? .......................................................................26

Log and Alert ..........................................................................................27

1. When does the P-660HW-Tx v2 generate the firewall log?.. 27

2. What does the log show to us? ............................................27

3. How do I view the firewall log? .............................................27

4. When does the P-660HW-Tx v2 generate the firewall alert?28

5. What is the difference between the log and alert?................28