ZyXEL P-870MH-C1 User Guide - Page 90
NAT, IGMP Multicast and Firewall Activation, Table 18
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Chapter 5 WAN Setup Table 18 WAN Configuration: IPoA LABEL DESCRIPTION Subnet Mask Enter the Device's subnet mask. It must be smaller than C class (255.255.255.0). Assign Public IP to LAN PCs by DHCP Select this to have the Device give the LAN DHCP clients public IP addresses. LAN clients can still configure static private IP addresses and access the Internet. Back Next Clear this option to assign the LAN DHCP clients private IP addresses. LAN clients can still configure static public IP addresses and access the Internet. Click this button to return to the previous screen. Click this button to continue. 5.6.1.4 NAT, IGMP Multicast and Firewall Activation The screen is available only when you select IP over Ethernet in the WAN Service Configuration screen or set the DSL link type to IPoA for the ATM interface and configure a WAN connection using the ATM interface. Figure 40 WAN Configuration: NAT, IGMP Multicast and Firewall Activation: IPoE/ IPoA The following table describes the labels in this screen. Table 19 WAN Configuration: NAT, IGMP Multicast and Firewall Activation: IPoE LABEL DESCRIPTION Enable NAT Select this check box to activate NAT on this connection. Enable Fullcone NAT Select this check box to activate full cone NAT on this connection. This field is available only when you select Enable NAT. Enable Firewall Select this check box to activate Firewall on this connection. Enable IGMP Multicast Proxy Select this check box to have the Device act as an IGMP proxy on this connection. This allows the Device to get subscribing information and maintain a joined member list for each multicast group. It can reduce multicast traffic significantly. 90 P-870HN-5xb User's Guide