ZyXEL Communications P-663HN-51 Support Notes page 3

18. How do I setup my P-663HN-51 for routing IPSec packets over NAT?
................................................................................................. 13
ADSL FAQ ............................................................................... 14
1. How does ADSL compare to Cable modems? .................................... 14
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
5. How does the P-663HN-51 work on a noisy ADSL? ........................... 15
6. Does the VC-based multiplexing perform better than the LLC-based
multiplexing? ........................................................................................... 15
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. How do I use single DSL line? ............................................................ 17
Firewall FAQ ........................................................................... 18
General .................................................................................... 18
1. What is a network firewall? ................................................................. 18
2. What makes P-663HN-51 secure? ..................................................... 18
3. What are the basic types of firewalls? ................................................ 18
4. Why do you need a firewall when your router has packet filtering and
NAT built-in? ........................................................................................... 19
5. What is Denials of Service (DoS) attack? ........................................... 19
6. What is Ping of Death attack? ............................................................. 19
7. What is Teardrop attack? .................................................................... 20
8. What is SYN Flood attack? ................................................................. 20
9. What is LAND attack? ......................................................................... 20
10. What is Brute-force attack? ............................................................... 20
11. What is IP Spoofing attack? .............................................................. 21
Configuration .......................................................................... 22
1. How do I configure the firewall? .......................................................... 22
2. How do I control some PC's time of accessing to Internet? ................ 22
3. Why can't I configure my P-663HN-51 using Web Configurator/Telnet
over WAN? ............................................................................................. 23
4. Why can't I upload the firmware and configuration file using FTP over
WAN? ................................................................................................. 24
Log and Alert
....................................................................................... 25
1. When does the P-663HN-51 generate the firewall log? ...................... 25
2. What does the log show to us? ........................................................... 26
3. When does the P-663HN-51 generate the firewall alert? .................... 26
4. What is the difference between the log and alert? .............................. 26
Wireless FAQ .......................................................................... 27
All contents copyright © 2009 ZyXEL Communications Corporation.
P-663HN-51 Support Notes
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