ZyXEL Communications G-2000 Plus - Manual (Page 41)

ZyAIR G-2000 Plus User’s Guide
Chapter 1 Getting to Know Your ZyAIR 40
1.2.2.16 PPPoE Support (RFC2516)
PPPoE (Point-to-Point Protocol over Ethernet) emulates a dial-up connection. It allows your
ISP to use their existing network configuration with newer broadband technologies such as
ADSL. The PPPoE driver on the ZyAIR is transparent to the computers on the LAN, which
see only Ethernet and are not aware of PPPoE thus saving you from having to manage PPPoE
clients on individual computers.
1.2.2.17 PPTP Encapsulation
Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables secure transfer of
data from a remote client to a private server, creating a Virtual Private Network (VPN) using a
TCP/IP-based network. PPTP supports on-demand, multi-protocol and virtual private
networking over public networks, such as the Internet. Use PPTP to connect to a broadband
modem to achieve access to high-speed data networks via a familiar "dial-up networking" user
interface.
1.2.2.18 Network Address Translation (NAT)
NAT (Network Address Translation - NAT, RFC 1631) allows the translations of multiple IP
addresses used within one network to different IP addresses known within another network.
1.2.2.19 Traffic Redirect
Traffic Redirect forwards WAN traffic to a backup gateway on the LAN when the ZyAIR
cannot connect to the Internet, thus acting as an auxiliary backup when your regular WAN
connection fails.
1.2.2.20 NAT for Single-IP-address Internet Access
The ZyAIR's SUA (Single User Account) feature allows multiple-user Internet access for the
cost of a single IP account. NAT supports popular Internet applications such as MS traceroute,
CuSeeMe, IRC, RealPlayer, VDOLive, Quake, and PPTP. No configuration is needed to
support these applications.
1.2.2.21 DHCP (Dynamic Host Configuration Protocol)
DHCP (Dynamic Host Configuration Protocol) allows the individual clients (computers) to
obtain the TCP/IP configuration at start-up from a centralized DHCP server. The ZyAIR has
built-in DHCP server capability enabled by default. It can assign IP addresses, an IP default
gateway and DNS servers to DHCP clients. The ZyAIR also acts as a surrogate DHCP server
(DHCP Relay) where it relays IP address assignment from the actual real DHCP server to the
clients.