Wireless ADSL Router
HRDSL521W
37
4.3 Advanced Setup
4.3.1 Firewall
Your router includes a firewall for controlling Internet access from your LAN and helping to
prevent attacks from hackers. In addition to this, when using NAT (Network Address
Translation) the router acts as a “natural” Internet firewall, since all PCs on your LAN use
private IP addresses that cannot be directly accessed from the Internet.
Firewall:
Enabled:
As set in default setting
,
it activates your firewall function.
Disabled:
It disables the firewall function.
SPI:
Enabled:
As set in default setting
,
it activates your SPI function.
Disabled:
It disables the SPI function.
