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X.
Firewall
This chapter introduces firewall general policy, access rule, and content filter settings to ensure network
security.
10.1 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.
Firewall：
SPI (Stateful Packet
Inspection)：
This feature allows users to turn on/off the firewall.
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.
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