ZyXEL Communications Centralized Network Management Vantage CNM - Manual (Page 74)

Chapter 5 Device Network Settings
Vantage CNM User’s Guide
74
5.3.1.3 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.
Select PPP Over Ethernet from the Encapsulation field. A warning message appears. Click
OK.
Figure 35 Warning Message When Select PPTP
Multicast Choose None (default), IGMP-V1 or IGMP-V2. IGMP (Internet Group Multicast
Protocol) is a network-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 inter operability between
IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.
Apply Click Apply to save your changes back to the device.
Reset Click Reset to begin configuring this screen afresh.
Table 19 Device Operation > Device Configuration > Network > WAN > ISP (PPPoE) –
ZyNOS ZyWALL (one WAN port) (continued)
LABEL DESCRIPTION