User manual

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Click Automatic Firewall
Security. This level enables
basic firewall security, all DoS
protection, and the SPI filter
function.
Press Finsih to finish setting
firewall.
The screen will prompt the parameters, which will
be written in EPROM. Check the parameters.
Press Restart to restart the router or press
Continue to setup another function.
User can determine the security level for special
purpose, environment, and applications by
configuring the DoS protection and defining an
extra packet filter with higher priority than the
default SPI filter. Note that, an improper filter policy
may degrade the capability of the firewall and/or
even block the normal network traffic.
Click Advanced Firewall Security
and then press Finish.
A SYN flood attack attempts to
slow your network by requesting
new connections but not
completing the process to open
the connection. Once the buffer
for these pending connections is
full a server will not accept any
more connections and will be
unresponsive.
ICMP Flood: A sender transmits a volume of ICMP request packets to cause all CPU resources to be
consumed serving the phony requests.
UDP Flood: A sender transmits a volume of requests for UDP diagnostic services which cause all CPU