![](http://pdfasset.owneriq.net/2/4f/24f16db3-4dce-4b72-beb5-21b5151edeab/24f16db3-4dce-4b72-beb5-21b5151edeab-bg22.png)
4.3 Advanced Setup
4.3.1 Firewall
Parameter Description
Firewall
When you enable the firewall function, it will protect you from
following attacks of WAN side:
¾ SYN flooding attack
¾ Ping of Death
¾ Teardrop
¾ Land attack
SPI
If you enable SPI, all traffics initiated from WAN site will be
blocked including DMZ, Virtual Server, etc.
4.3.2 Routing
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