Billion Electric Company BiPAC 8501/8521 - Manual (Page 86)

Billion BiPAC 8500/8501/8520/8521 SHDSL (VPN) Firewall Bridge/ Router
Chapter 4: Configuration
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Any remote user who is attempting to perform this action may result in
blocking all the access to configure and management of the device from
the Internet.
General Settings
You can choose not to enable Firewall, you will not able to add filter rules by yourself in the
Packet Filter, or enable the Firewall using preset filter rules and modify the packet filter rules as
required. The Packet Filter is used to filter packets based-on Applications (Port) or IP addresses.
There are four options to choose when you enable Firewall, these are:
• All blocked/User-defined: no pre-defined port or address filter rules by default, meaning
that all inbound (Internet to LAN) and outbound (LAN to Internet) packets will be blocked.
Users have to add their own filter rules for further access to the Internet.
• High/Medium/Low security level: the predefined port filter rules for High, Medium and
Low security are displayed in Port Filters of the Packet Filter.
Select either High, Medium or Low security level to enable Firewall. The only difference
between these three security levels is the preset port filter rules in the Packet Filter. Firewall
functionality is the same for all levels; it is only the list of preset port filters that changes
between each setting. For more detailed on level of preset port filter information, refer to Table
1: Predefined Port Filter.
Note: The changes or added custom filters on a previous security level will be remembered
whenever newer security level is selected. There is no need to reconfigure all settings again if
switching back to the previous level.
The “Block WAN Request” is a stand-alone function and is not affected by whether security is
enabled or disabled. Mostly this is for preventing any scan tools from the hacker from WAN site.