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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
