ADTRAN Express L1.5, User Manual

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Chapter 3: Terminal Menu Operation and Structure
30 Express L768/L1.5 User Manual 61202192L1-1
communication across NAT must be initiated from the LAN side of the Ex-
press L768/L1.5. Web Server allows a single machine on the NAT side to be
accessed from the Internet side of NAT. This provides outside access to a web-
server, mail, or ftp server.
NAT/Default IP
This is the IP address used by the Express L768/L1.5 for Network Address
Translation when nothing is assigned during the PPP negotiation when PPP
mode is active or when nothing is specified in the DLCI Mapping’s Link IP
Address.
IP/DNS
The Domain Name Server parameters used by the Express L768/L1.5 are spec-
ified here. The DNS server addresses can be exchanged between PPP peers.
When a connection occurs and IPCP is negotiated, the Express L768/L1.5 will
get the DNS server addresses from the PPP peer. If the configured DNS server
addresses (
Server 1 and Server 2 ) are all zeros, the addresses from the PPP
peer are used. In NAT mode, the PPP peer’s DNS addresses are always used.
The DNS addresses set in
Server 1 and Server 2 are offered to a PPP peer if so requested.
DNS/Domain Name
Write security: 3; Read security: 5
This is a text string used to represent the domain name used by the Express
L768/L1.5.
DNS/Server 1
Write security: 3; Read security: 5
This is the IP address for the primary DNS device. It is the first server that do-
main name requests are sent.
DNS/Server 2
Write security: 3; Read security: 5
This is the IP address for the secondary DNS device. It is used as a back-up in
case the primary address does not respond to the request.