CTC Union ICR-4103 Series, User Manual

Page: 126 / 155

126
CHAPTER 3.
WEB CONFIGURATIONS
3.9.6.6 NAT
This section allows you to set NAT configuration.
When NAT is on, the router will replace the source private IP address by its Internet public
address for outgoing packets, and replace the destination Internet public address by private IP
address for incoming packets.
When NAT is off, the router will send the source LAN private IP address for outgoing packets and
allow to receive the destination LAN private IP address for incoming packets.
3.9.6.7 IPS
This section allows you to set IPS configuration. IPS prevents the system from being attacked by
the Internet.
The system is able to limit the max incoming connection number from WAN per source IP
address to prevent system resource exhausted. Also, the system allows to limit the max incoming
connection retry number during a specific time period from WAN per source IP address to
prevent too many unexpected connections retry event from causing system busy.