Asus DSL-N12HP users manual in English - Page 154
Ppp Settings, Enable Fullcone Nat, Dial On Demand, Ppp Ip Extension
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PPP SETTINGS The PPP username and password are dependent on the requirements of the ISP. The user name can be a maximum of 256 characters and the password a maximum of 32 characters in length. (Authentication Method: AUTO, PAP, CHAP, or MSCHAP.) ENABLE FULLCONE NAT This option becomes available when NAT is enabled. Known as one-to-one NAT, all requests from the same internal IP address and port are mapped to the same external IP address and port. An external host can send a packet to the internal host, by sending a packet to the mapped external address. DIAL ON DEMAND The DSL-N12HP can be configured to disconnect if there is no activity for a period of time by selecting the Dial on demand checkbox. You must also enter an inactivity timeout period in the range of 1 to 4320 minutes. PPP IP EXTENSION The PPP IP Extension is a special feature deployed by some service providers. Unless your service provider specifically requires this setup, do not select it. PPP IP Extension does the following: • Allows only one PC on the LAN. • Disables NAT and Firewall. • The device becomes the default gateway and DNS server to the PC through DHCP using the LAN interface IP address. • The device extends the IP subnet at the remote service provider to the LAN PC. i.e. the PC becomes a host belonging to the same IP subnet. • The device bridges the IP packets between WAN and LAN 154