Chapter 8 WAN Screens

Table 39 NETWORK > WAN > WAN 1 (PPPoE Encapsulation) (continued)

LABEL

DESCRIPTION

Enable Multicast

Select this check box to turn on IGMP (Internet Group Multicast Protocol). IGMP is

 

a network-layer protocol used to establish membership in a Multicast group - it is

 

not used to carry user data.

 

 

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 configure the WAN port's MAC address by either using the factory

Address from

assigned default MAC Address or cloning the MAC address of a computer on your

LAN

LAN. By default, the ZyWALL uses the factory assigned MAC Address to identify

 

itself on the WAN.

 

Otherwise, select the check box next to Spoof WAN MAC Address from LAN 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

If you clone the MAC address of a computer on your LAN, it is recommended that

address – IP

you clone the MAC address prior to hooking up the WAN port.

Address

 

Apply

Click Apply to save your changes back to the ZyWALL.

 

 

Reset

Click Reset to begin configuring this screen afresh.

 

 

8.12.3 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.

184

 

ZyWALL 2WG User’s Guide