ZyXEL P-335 Plus User Guide - Page 66
P-335 Plus User's Guide, WAN, Advanced
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P-335 Plus User's Guide The following table describes the labels in this screen. Table 23 Advanced LABEL DESCRIPTION Multicast Setup Multicast Select IGMP V-1 or IGMP V-2 or None. 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 interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236. Windows Networking (NetBIOS over TCP/IP): NetBIOS (Network Basic Input/Output System) are TCP or UDP broadcast packets that enable a computer to connect to and communicate with a LAN. For some dial-up services such as PPPoE or PPTP, NetBIOS packets cause unwanted calls. However it may sometimes be necessary to allow NetBIOS packets to pass through to the WAN in order to find a computer on the WAN. Allow between LAN and WAN Select this check box to forward NetBIOS packets from the LAN to the WAN and from the WAN to the LAN. If your firewall is enabled with the default policy set to block WAN to LAN traffic, you also need to enable the default WAN to LAN firewall rule that forwards NetBIOS traffic. Clear this check box to block all NetBIOS packets going from the LAN to the WAN and from the WAN to the LAN. Allow Trigger Dial Select this option to allow NetBIOS packets to initiate calls. Apply Click Apply to save your changes back to the ZyXEL Device. Reset Click Reset to begin configuring this screen afresh. 66 Chapter 4 WAN