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The NAT Global Information table, which displays the following settings that apply to all
NAT rule translations:
z TCP Idle Timeout (sec), TCP Close Wait (sec), TCP Def Timeout (sec): When two
computers communicate via the Internet, a Transmission Control Protocol-based
communication session is created between them to control the exchange of data packets.
The TCP session can be viewed as being in one of three states, depending on the types
of packets being transferred: the establishing state, where the connection is being set up,
the active state, where the connection is being used to transfer data, and the closing
state, in which the connection is being shut down. When a NAT rule is in effect on a TCP
session in the active state, the session will timeout if no packets are received for the time
specified in TCP Idle Timeout. When in the closing state, the session will timeout if no
packets are received for the time specified in TCP Close Wait. When in the establishing
state, the session will timeout if no packets are received for the time specified in TCP Def
Timeout.
z UDP Timeout (sec): Same as TCP Idle Timeout, but for User Datagram Protocol-based
communication sessions.
z ICMP Timeout (sec): Same as TCP Idle Timeout, but for Internet Control Message
Protocol-based communication sessions.
z GRE Timeout (sec): Same as TCP Idle Timeout, but for Generic Routing
Encapsulation-based communication sessions.
z ESP Timeout (sec): Same as TCP Idle Timeout, but for Encapsulating Security
Payload-based communication sessions.
z Default Nat Age (sec): For all other NAT translation sessions, the number of seconds for
which a NAT translation will continue to be valid if no packets are received.
z NAPT Port Start/End: When an napt rule is defined, the source ports will be translated
to sequential numbers in this range
5.7.2 RIP
Your ADSL/Ethernet router can be configured to communicate with other routing devices
to determine the best path for sending data to its intended destination. Routing devices
communicate this information using a variety of IP protocols. This topic describes how to
configure your [Productname] to use one of these, called the Routing Information Protocol
(RIP).