Wellink Corporation NEOBIT1014VA User Manual

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NEOBIT 1014VA ADSL Router User’s Guide 
Chapter8   
 The NAT Options drop-down list, which provides access to 
the Global Information page (shown by default), the NAT 
Rule Configuration page, and the NAT Translations page, 
which shows current translations. 
 Enable/Disable radio buttons, which allow you to turn on or 
off the NAT feature. 
 The NAT Global Information table, which displays the 
following settings that apply to all NAT rule translations: 
 
Field 
Description 
TCP Idle Timeout (sec) 
For a NAT translation session on data that 
uses the TCP protocol, the translation will no 
longer be performed if no matching data 
packets are received after the specified time 
has elapsed. 
TCP Close Wait (sec) 
For a NAT translation on data using the TCP 
protocol, after a communication session has 
been closed, the translation will no longer be 
performed if no matching data packets are 
received after the specified time has elapsed.
TCP Def Timeout (sec) 
For a NAT translation session on data that 
uses the TCP protocol, the translation will no 
longer be performed if no matching data 
packets are received after the specified time 
has elapsed. 
UDP Timeout (sec) 
Same as TCP Idle Timeout, but for UDP 
packets. 
ICMP Timeout (sec) 
Same as TCP Idle Timeout, but for ICMP 
packets. 
GRE Timeout (sec) 
Same as TCP Idle Timeout, but for GRE 
packets. 
Default Nat Age (sec) 
For all other NAT translation sessions, the 
number of seconds after which a translation 
session will no longer be valid. 
NAPT Port Start/End 
When an napt rule is defined, the source 
ports will be translated to sequential numbers 
in this range. 
 
If you change any values, click 
, and then click the 
Admin tab and commit your changes to permanent system memory 
(see page 40). 
You can click 
 to view accumulated data on 
how many NAT rules have been invoked and how much data has 
been translated. A page similar to the one shown in Figure 27 
displays.