User Manual

VisionNet 202ER ADSL Ethernet Router User’s Guide
58
The NAT Global Information table contains the following fields:
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 36).
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 21
displays.