Technical Reference
OPEN824RL / RLW ADSL / VoIP Routers
59
General Settings
You can choose not to enable Firewall, to add all filter rules by yourself, or enable the Firewall using preset
filter rules and modify the port filter rules as required. The Packet Filter is used to filter packets based-on
Applications (Port) or IP addresses.
To Access The General Settings Screen:
From the
Configuration
menu list,
Click
Firewall,
then
General Settings
.
The following appears:
There are four options when you enable the Firewall, they 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 Packet Filter.
Select either
High, Medium
or
Low
security level
to enable the 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
.
If you choose of the preset security levels and then add custom filters, you may temporarily disable the firewall
and recover your custom filter settings by re-selecting the same security level.
The “
Block WAN Request
” is a stand-alone function and not relate to whether security enable or disable.
Mostly it is for preventing any scan tools from WAN site by hacker.
