ZyXEL Communications P-202H Plus v2, Support Notes

Page: 9 / 434

P-202H Plus v2 Support Notes
allows a network to rectify the illegal address problem mentioned above without
going through each and every host.
The aim of ZyXEL's SUA is to minimize the Internet access cost in a small office
environment by using a single IP address to represent the multiple hosts inside. It
does more than IP address translation, it also enables hosts on the LAN can
access the Internet at the same time.
12. How many network users can the SUA support?
The fixed-size translation table limits the number of simultaneous. A reasonable
number will be less than 20 users. Beyond that, the limited modem bandwidth
would probably become the bottleneck and any increase in the translation table
size will not help.
13. How do I capture the PPP log in my P-202H Plus v2?
The procedure to capture the PPP log in P-202H Plus v2 is as following.
To enable the capture of PPP log before a connection is established:
a. Enter SMT Menu 24.8, the CI command mode
b. Enter 'sys trcl cl' command
c. Enter 'sys trcl sw on' command
d. Enter 'sys trcp sw on' command
To display the PPP log after a connection is disconnected:
a. Enter 'sys trcl sw off' command
b. Enter 'sys trcp sw off' command
c. Enter 'sys trcl disp' command
14. Why do we need the input filter in menu 3.1 and call filter in menu 11.1?
Two factory default filter sets have been optimized for Internet connection. They
are configured in menu 21 and applied to menu 3.1 and menu 11.5 to prevent
NETBIOS triggering the call. You can remove it if you do not need it.
15. How can I protect against IP spoofing attacks?
The P-202H Plus v2's filter sets provide a means to protect against IP spoofing
attacks. The basic scheme is as follows:
For the incoming data filter:
All contents copyright © 2006 ZyXEL Communications Corporation.
9