PLANET SG-4800 - Manual (Page 86)

Gigabit SSL VPN Security Router User’s Manual
Chapter 9 : Firewall
This chapter introduces firewall general policy, access rule, and content filter settings to ensure network
security.
9.1 General Policy
The firewall is enabled by default. If the firewall is set as disabled, features such as SPI, DoS, and outbound
packet responses will be turned off automatically. Meanwhile, the remote management feature will be
activated. The network access rules and content filter will be turned off.
Item Description
Firewall This feature allows users to turn on/off the firewall.
SPI (Stateful Packet
Inspection)
This enables the packet automatic authentication detection technology. The
Firewall operates mainly at the network layer. By executing the dynamic
authentication for each connection, it will also perform an alarming function for
application procedure. Meanwhile, the packet authentication firewall may decline
the connections which use non-standard communication protocol.
DoS (Denial of Service) This averts DoS attacks such as SYN Flooding, Smurf, LAND, Ping of Death, IP
Spoofing and so on.
Block WAN request If set as Enabled, then it will shut down outbound ICMP and abnormal packet
responses in connection. If users try to ping the WAN IP from the external, this
will not work because the default value is set as activated in order to decline the
outbound responses.
Remote Management
To enter the device web- based UI by connecting to the remote Internet, this
feature must be activated. In the field of remote browser IP, a valid external IP
address (WAN IP) for the device should be filled in and the modifiable default
control port should be adjusted (the default is set to 80, modifiable).
Multicast Pass There are many audio and visual streaming media on the network. Broadcasting
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