Listed are the items under the Firewall section: General Settings, Packet Filter, Intrusion
Detection, URL Filter, IM/P2P Blocking and Firewall Log.
General Settings
You can choose not to enable Firewall and still able to access to URL Filter and IM/P2P Blocking
or enable the Firewall using preset lter rules and modify the port lter rules as required. The
Packet Filter is used to lter packets based-on Applications (Port) or IP addresses.
There are four options when you enable the Firewall, they are:
All blocked/User-dened: no pre-dened port or address lter 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 lter rules for further access to the Internet.
High/Medium/Low security level: the predened port lter 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 lter rules in the Packet Filter. Firewall functionality is
the same for all levels; it is only the list of preset port lters that changes between each setting. For
more detailed on level of preset port lter information, refer to Table 1: Predened Port Filter.
If you choose of the preset security levels and add custom lters, this level of lter rules will be saved
even and do not need to re-congure the rules again if you disable or switch to other rewall 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.
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