Chapter 4: Advanced Applications; Firewall - KTI Networks KWG-400 User Manual

11g Wireless Security Router User Guide

Chapter 4: Advanced Applications

This chapter provides information on how to set up and use the advanced functions of
your Advanced Wireless 11g Router.

4-1 Firewall

The settings page allows you to configure advanced Firewall functions, providing
superior security for your network environment.
Firewall Option:
Web Filter:
Enabling this function will prevent DoS (Denial of Service)
attacks and activates the SPI (Stateful Packet Inspection). The
SPI function will check any incoming data packets, particularly
whenever there is a TCP connection initiated by your LAN PCs.
This feature provides options allowing you to filter any
potential risk contained in some web technologies by
individually checking "Allow" or "Deny".
Web proxy is a server your device will connect to when you
access any web site. Setting web proxy can speed up access
time but also can create other potential security issue. For
example, if you configure the Wireless Security Router to block
access to 216.115.102.76, which is the IP address of
www.yahoo.com, it will fail. This is because your PC will
connect to web proxy server instead of connecting to Yahoo's
IP address.
Java & Active X are programming languages for web page.
However, some potentially harmful Trojan programs and
viruses are also written in these languages. If you deny access to
- 21 -