Verilink WANsuite 6x30 (34-00315.B) Product Manual User Manual

Page 85

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W e b S e r v e r I n t e r f a c e

3-57

M od e

Selects the Network Address Port Translation (NAPT) mode or the Basic
NAT mode. In NAPT mode, all hosts on the Global (public) side view all
hosts on the Local (private) side as a single internet host (one IP address). In
Basic NAT mode, the Global IP address is assigned as a Class C host address
(Mask of 255.255.255.0). Each private IP address on the Local side is mapped
to a Class C public address on the Global side. In other words, if there are 30
hosts on the private (Local) side, 30 public (Global) addresses are required.
The default is NAPT.

G lo b a l IP A d d r

Global IP Address used in NAPT mode. Must be a valid Class C address.
Default is LAN IP Address.

G lo b al M a sk

IP Mask associated with defined Global IP Address. Default is LAN IP Mask.

IC M P D efa u lt A d d r

Default source address used to answer any ICMP request. Default is LAN IP
Address. ICMP requests are not transferred from the Global to the Local side.
Rather they are answered by the unit itself since Local addresses are private
and do not receive unsolicited requests.

F ilter N on L o ca l

A d d ress

Discards any packet with “non corporate” source address. Default is “Enable.”

The screen parameters listed below are related to the NAT Control Block
Timer. Note that default values should be in accordance with most NAT
applications. The timers’ values minimize NAT resources. Generally, when a
timer has expired, the resources used are no longer needed. Those resources
will then be available for other connection resources.

IP E n try T im er

The maximum time (in seconds) NAT will use resources when not using
TCP, UDP, or ICMP.

Values: 0

65535

Default: 120

T C P C on n ectio n T im er

The maximum time (in seconds) NAT will use resources when attempting to
establish a TCP connection.

Values: 0

65535

Default: 300

T C P C losin g T im er

The maximum time (in seconds) NAT will use resources when attempting to
close a TCP connection.

Values: 0

65535

Default: 0

T C P D iscon n ected

T im er

The maximum time (in seconds) NAT will use resources when attempting to
disconnect from TCP.

Values: 0

65535

Default: 120

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