ADTRAN Express 6100, Manual

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Chapter 3. Terminal Menu Operation and Structure
3-16 Express 6100/6120 User Manual 61200176L1-1
This mode is most commonly used with the NAT functionality. The
default is
Off
.
NAT/DHCP Renewal Time
Write security: 3; Read security: 5
This is the number of hours that the DHCP server should allow the de-
vice before it is required to send a new DHCP request. The default is
15 hours, and 0 represents an infinite lease.
NAT/Web Server
Write security: 3; Read security: 5
This is the IP address of a web server on the Ethernet network. When
an active NAT connection is made to the Internet, any HTTP, FTP, or
SMTP server requests from the WAN are translated and sent to this
web server. Normally, communication across NAT must be initiated
from the LAN side of the Express 6100/6120. Web Server allows a sin-
gle 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 6100/6120 for Network Ad-
dress Translation when nothing is assigned during the PPP negotia-
tion 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 6100/6120
are specified here. The DNS server addresses can be exchanged be-
tween PPP peers. When a connection occurs and IPCP is negotiated,
the Express 6100/6120 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 requested.