ZyXEL Communications P-660HW-Tx v3 Support Notes page 3

14. What do the parameters (PCR, SCR, MBS) mean? ........................ 15
15. What do the ATM QoS Types (CBR, UBR, VBR-nRT, VBR-RT) mean?
.......................................................................................................... 15
16. What is content filter? .................................................................... 16
ADSL FAQ
.......................................................................................... 17
1. How does ADSL compare to Cable modems? .................................. 17
2. What is the expected throughput? .................................................... 17
3. What is the microfilter used for? ....................................................... 17
4. How do I know the ADSL line is up? ................................................ 17
5. How does the P-660HW-Tx v3 work on a noisy ADSL? .................... 17
6. Does the VC-based multiplexing perform better than the LLC-based
multiplexing? ...................................................................................... 18
7. How do I know the details of my ADSL line statistics?....................... 18
8. What are the signaling pins of the ADSL connector? ........................ 18
9. What is triple play? .......................................................................... 18
Firewall FAQ
....................................................................................... 20
General .............................................................................................. 20
1. What is a network firewall? ................................................ 20
2. What makes P-660HW-Tx v3 secure? ................................ 20
3. What are the basic types of firewalls?................................. 20
4. What kind of firewall is the P-660HW-Tx v3? ...................... 21
5. Why do you need a firewall when your router has packet
filtering and NAT built-in? ...................................................... 21
6. What is Denials of Service (DoS) attack? ........................... 21
7. What is Ping of Death attack? ............................................ 22
8. What is Teardrop attack? ................................................... 22
9. What is SYN Flood attack? ................................................ 22
10. What is LAND attack? ...................................................... 22
11 What is Brute-force attack? ............................................... 23
12. What is IP Spoofing attack? ............................................. 23
13. What are the default ACL firewall rules in P-660HW-Tx v3?
............................................................................................. 23
Configuration ...................................................................................... 23
1. How do I configure the firewall? ......................................... 23
2. How do I prevent others from configuring my firewall?......... 23
3. Why can't I configure my P-660HW-Tx v3 using Web
Configurator/Telnet over WAN? ............................................. 24
4. Why can't I upload the firmware and configuration file using
FTP over WAN? .................................................................... 25
Log and Alert ...................................................................................... 26
1. When does the P-660HW-Tx v3 generate the firewall log? .. 26
2. What does the log show to us? .......................................... 26
All contents copyright © 2008 ZyXEL Communications Corporation.
P-660HW-Tx v3 Series Support Notes
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