Billion BiPAC 7402G User Manual page 45

NAT: The NAT (Network Address Translation) feature allows multiple users to access the Internet through
a single IP account, sharing the single IP address. If users on your LAN have public IP addresses and
can access the Internet directly, the NAT function can be disabled.
Your WAN IP address. Leave this at 0.0.0.0 to obtain automatically an IP
IP (0.0.0.0:Auto):
address from your ISP.
Auth. Protocol: Default is Auto. Your ISP should advises you on whether to use Chap or Pap.
Connection:
Always on: If you want the router to establish a PPP session when starting up and to
automatically re-establish the PPP session when disconnected by the ISP.
Connect on Demand: If you want to establish a PPP session only when there is a packet
requesting access to the Internet (i.e. when a program on your computer attempts to access the
Internet).
Idle Timeout: Auto-disconnect the broadband firewall gateway when there is no activity on the line for a
predetermined period of time.
Detail: You can define the destination port and packet type (TCP/UDP) without checking by
timer. It allows you to set which outgoing traffic will not trigger and reset the idle timer.
MTU: Maximum Transmission Unit. The size of the largest datagram (excluding media-specific headers)
that IP will attempt to send through the interface.
RIP: RIP v1, RIP v2, and RIP v2 Multicast. Check to enable RIP function.
TCP MSS Clamp: This option helps to discover the optimal MTU size automatically. Default is enabled.
Obtain DNS: A Domain Name System (DNS) contains a mapping table for domain name and IP
addresses. DNS helps to find the IP address for the specific domain name. Check the checkbox to
obtain DNS automatically.
Primary DNS: Enter the primary DNS.
Secondary DNS: Enter the secondary DNS.
Chapter 4: Configuration
3G / ADSL2+ (802.11g) (VPN) Firewall Router
44