NAT (Network Address Translation) is the technology which allows one (1) WAN (Internet) IP
address to be used by many LAN users.
Figure 4-10: NAT
Settings – NAT
NAT
Configuration
• NAT Routing –Enables or disables NAT routing by checking or un-checking
the checkbox. If you disable NAT routing, this device will act as a Bridge or
Static Router. Most features, including Load Balance, will be unavailable. If
some packets have port numbers which cannot be translated for special
applications, you must input value in port range for Disable Port Translation.
• TCP Timeout –The time during which TCP expects to receive the
acknowledgement from the destination. The default is 300 seconds.
• UDP Timeout –The time during which UDP expects to receive the
acknowledgement from the destination. The default is 120 seconds.
• TCP Window Limit –The maximum number of outstanding packets prior to
TCP receiving an acknowledgement. The default is 0 (no limit).
• TCP MSS Limit –The largest amount of data that can be transmitted in one
TCP packet. The default is 0 (no change).
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