H.264MP-MegaPixels RTSP Streaming User’s Manual
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•
Port Forwarding
: Standard port forwarding is an "always on" tunnel through your
router's firewall. Any visitor may connect to your network on the given port at any time.
This is the correct choice for "always on" services such as web servers and mail servers.
•
Port Triggering
: This is a special kind of "temporary" port forwarding that requires an
initial
outgoing
connection. Once the connection is established, the router begins
forwarding all new incoming connections to the local machine; when the local machine
closes the connection, the forwarding rule is turned off. This rule is most commonly used
in gaming, video conferencing and other applications that receive incoming connections
on a need-only basis.
•
DMZ (DeMilitarized Zone)
: This feature effectively places the destination device outside
of the router's protective firewall by forwarding all incoming connections on all ports to
the single local machine. The DMZ is mostly used for troubleshooting purposes and
advanced network configurations; as such, it is
not recommended
to use the DMZ for
general hosting purposes.
In most routers, a port forwarding rule take the following information:
•
Application Name
: The label for the forwarding rule.
•
Start and End Port
: The application's port(s), e.g. 80 for HTTP. Many routers will allow
you to forward an array of ports with a single rule.
•
Protocol
: The protocol (TCP, UDP or Both) for the forwarding rule. The protocol
depends on the type of service you are providing (e.g. webservers use TCP).
•
IP Address
: The internal IP address of the destination device in the LAN, usually
beginning with
192.168.x
. If your router dynamically assigns internal IPs with DHCP, you
will need to configure the server device to
use an internal static IP address
.
The best source for more detailed information about routers and port forwarding, as well as
step-by-step pictorial walkthroughs for most common routers, is
PortForward.com
. If you are
setting up a new service and configuring your router for the first time, it is highly recommended
to read their guides and walkthroughs to determine the necessary changes you will need to
make to correctly forward ports in your router.
