6.Firewall Configuration
Overview
An Internet firewall allows approved traffic in and out according to a predetermined plan. A
firewall is a safeguard security mechanism that provides protection between LAN and WAN. It
protects the intranet from intrusion by outsides and hackers, thus providing a secure
environment for users. The Broadband Firewall Router provides a number of functions to
user, including:
Basic Setting
Follow the procedure below to setup the Broadband Firewall Router’s Basic Setting.
1. Click Advanced Settings in the top column. Then click Firewall Setup.
2. Click “Basic Setting”, and the following box will appear.
3. If you want to start up the firewall, you must choose “Yes” in “Firewall Protection”.
The default is “Disable”.
4. “Default LAN-to-Internet Action” allow you to use ‘Internet service’. The default is
“Allow”.
5. “Default Internet-to-LAN Action” allow you to discard service from Internet. The
default is “Allow”.
6. “Number of Incomplete TCP Connections Allowed in A Minute” judges how many
packets of incomplete TCP connection constitute an attack. The default is “20”
packets.
7. “DoS Self-Protection Time” could protect your network. If somebody attacks your
network, the Broadband Firewall Router will lock up. The default time is “0 minute”.
8. “Allows TCP/UDP Port Number 139 Packets” allows for TCP/UDP port 139 by-pass.
The default is “No”.
38
