D-Link AC750 User Manual page 134

Section 3 - Configuration
DMZ IP Address:
Specify the IP address of the computer on the LAN that
you want to have unrestricted Internet communication. If
this computer obtains it's IP address automatically using
DHCP, be sure to make a static reservation on the Setup >
Network.Settings page so that the IP address of the DMZ
machine does not change.
PPTP:
Allows multiple machines on the LAN to connect to their
corporate network using PPTP protocol.
IPSEC (VPN):
Allows multiple VPN clients to connect to their corporate
network using IPSec. Some VPN clients support traversal
of IPSec through NAT. This ALG may interfere with the
operation of such VPN clients. If you are having trouble
connecting with your corporate network, try turning this
ALG off. Please check with the system administrator of your
corporate network whether your VPN client supports NAT
traversal.
RTSP:
Allows application that uses Real Time Streaming Protocol
to receive streaming media from the Internet. QuickTime
and Real Player are some of the common applications using
this protocol.
SIP:
Allows devices and applications using VoIP (Voice over IP)
to communicate across NAT. Some VoIP applications and
devices have the ability to discover NAT devices and work
around them. This ALG may interfere with the operation of
such devices. If you are having trouble making VoIP calls,
try turning this ALG off.
D-Link DIR-816L User Manual 129