Chap.4 IP Network
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PPPoE
PPPoE (Point-to-Point Protocol over Ethernet) is a protocol that enables connections between a DSL modem and
the Internet. This service is provided by ISP (Internet Service Provider).
UPnP
UPnP (Universal Plug and Play) includes two main functions, UPnP port forwarding and UPnP presentation.
UPnP port forwarding enables network devices to easily communicate with each other over the Internet. When both
the network device and router support UPnP, video streaming ports will be forwarded, so called port forwarding
(Figure 4.4).
If the user’s PC supports UPnP presentation, an icon of the network devices on the same LAN will appear in My
Network Places to allow for direct access (Figure 4.5).
PC
PC
Camera
Internet
UPnP
Port Fowarding
Figure 4.4 UPnP port forwarding
Figure 4.5 UPnP-enabled network cameras shown in My Network Places
Summary of Contents for IP Surveillance
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