Verilink WANsuite 7105 (34-00316.C) Product Manual - Manual (Page 222)

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Rather they are answered by the unit itself since Local addresses are private
and do not receive unsolicited requests.
Filter Non Local
Address
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 Entry Timer The maximum time (in seconds) NAT will use resources when not using
TCP, UDP, or ICMP.
Values: 0
−
65535
Default: 120
TCP Connection Timer The maximum time (in seconds) NAT will use resources when attempting to
establish a TCP connection.
Values: 0
−
65535
Default: 300
TCP Closing Timer The maximum time (in seconds) NAT will use resources when attempting to
close a TCP connection.
Values: 0
−
65535
Default: 0
TCP Disconnected
Timer
The maximum time (in seconds) NAT will use resources when attempting to
disconnect from TCP.
Values: 0
−
65535
Default: 120
TCP Sequence Delta
Timer
The maximum time (in seconds) NAT will use resources when managing TCP
Packet Sequencing.
Values: 0
−
65535
Default: 180
UDP Timer The maximum time (in seconds) NAT will use resources for a UDP port in
use.
Values: 0
−
65535
Default: 120
ICMP Timer The maximum time (in seconds) NAT will use resources for any ICMP
request.
Values: 0
−
65535
Default: 120