Chapter 8 WAN Screens

Table 33 NETWORK > WAN > WAN (PPPoE Encapsulation) (continued)

LABEL

DESCRIPTION

Multicast Version

Choose None (default), IGMP-V1or IGMP-V2. IGMP (Internet Group Multicast

 

Protocol) is a session-layer protocol used to establish membership in a Multicast

 

group – it is not used to carry user data. IGMP version 2 (RFC 2236) is an

 

improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If

 

you would like to read more detailed information about interoperability between

 

IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.

 

 

Spoof WAN MAC

You can use the factory assigned default MAC Address or cloning the MAC

Address

address from a computer on your LAN.

 

Otherwise, select the check box next to Spoof WAN MAC Address and enter the

 

IP address of the computer on the LAN whose MAC you are cloning. Once it is

 

successfully configured, the address will be copied to the rom file (ZyNOS

 

configuration file). It will not change unless you change the setting or upload a

 

different ROM file.

 

 

Clone the

Enter the IP address of the computer on the LAN whose MAC you are cloning.

computer’s MAC

It is recommended that you clone the MAC address prior to hooking up the WAN

address – IP

port.

Address

 

Apply

Click Apply to save your changes back to the ZyWALL.

 

 

Reset

Click Reset to begin configuring this screen afresh.

 

 

8.7.3 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 TCP/IP-based networks.

PPTP supports on-demand, multi-protocol and virtual private networking over public networks, such as the Internet. The screen shown next is for PPTP encapsulation.

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ZyWALL 2 Plus User’s Guide