Port Forwarding - ZyXEL Communications P-2302R-P1 Series User Manual

Network Address Translation (NAT)
Network Address Translation (NAT) allows the translation of an Internet protocol address
used within one network (for example a private IP address used in a local network) to a
different IP address known within another network (for example a public IP address used on
the Internet).
Universal Plug and Play (UPnP)
Using the standard TCP/IP protocol, the ZyXEL Device and other UPnP enabled devices can
dynamically join a network, obtain an IP address and convey its capabilities to other devices
on the network.
DHCP (Dynamic Host Configuration Protocol)
DHCP (Dynamic Host Configuration Protocol) allows the individual client computers to
obtain the TCP/IP configuration at start-up from a centralized DHCP server. The ZyXEL
Device has built-in DHCP server capability, enabled by default, which means it can assign IP
addresses, an IP default gateway and DNS servers to all systems that support the DHCP client.
The ZyXEL Device can also act as a surrogate DHCP server where it relays IP address
assignment from the actual real DHCP server to the clients.

Port Forwarding

Use this feature to forward incoming service requests to a server on your local network. You
may enter a single port number or a range of port numbers to be forwarded, and the local IP
address of the desired server.
Dynamic DNS Support
With Dynamic DNS (Domain Name System) support, you can have a static hostname alias for
a dynamic IP address, allowing the host to be more easily accessible from various locations on
the Internet. You must register for this service with a Dynamic DNS service provider.
IP Multicast
Deliver IP packets to a specific group of hosts using IP multicast. IGMP (Internet Group
Management Protocol) is the protocol used to support multicast groups. The latest version is
version 2 (see RFC 2236); the ZyXEL Device supports both versions 1 and 2.
IP Alias
IP Alias allows you to partition a physical network into logical networks over the same
Ethernet interface. The ZyXEL Device supports three logical LAN interfaces via its single
physical Ethernet LAN interface with the ZyXEL Device itself as the gateway for each
network.
Chapter 1 Introducing the ZyXEL Device
P-2302R-P1 Series User's Guide
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