D-Link DI-524UP Ping Test, Block WAN Ping, Discard Ping from WAN side If you choose to block

Ping Test	The Ping Test is used to send Ping packets to test if a
	computer is on the Internet. Enter the IP Address that
	you wish to Ping, and click Ping.
Block WAN Ping	Discard Ping from WAN side If you choose to block
	WAN Ping, the WAN IP Address of the DI-524UP will
	not respond to pings. Blocking the Ping may provide
	some extra security from hackers. Click Enabled to
	block the WAN ping.
SPI Mode	SPI or Stateful Packet Inspection is a type of firewall
	that protects your network against hacker attacks by
	analyzing packets to ensure that only authorized
	packets will be allowed to enter your network. To
	enable this function, click the Enabled radio button.
	This function is enabled by default.
IGMP Proxy	The Internet Group Management Protocol (IGMP)
	snooping allows the Router to recognize IGMP queries
	and reports sent between PCs on your LAN and an
	IGMP host. When the IGMP Proxy is enabled, the
	Router can open or close a port to a specific PC based
	on IGMP messages passing through the Router.
UPNP Settings	You may enable the Universal Plug n’ Play function
	here by clicking the Enabled radio button.
VPN Pass-Through	The DI-524UP supports VPN (Virtual Private Network)
	pass-through for both PPTP (Point-to-Point Tunneling
	Protocol)	and IPSec (IP Security). Once VPN
	pass-through is enabled, there is no need to open up
	virtual services. Multiple VPN connections can be made
	through the DI-524UP. This is useful when you have
	many VPN clients on the LAN network.
	PPTP	Select enabled or disabled.
	IPSec	Select enabled or disabled.
WAN Select	This section allows the user to set the wire speed over
	which the router will transmit packets. The user has
	three options:

100 Mbps – Clicking this radio button will set the wire speed at 100 megabytes per second.

10 Mbps – Clicking this radio button will set the wire speed at 10 megabytes per second.

59