Monitor==>NAT Sessions

Network address translator (NAT) is software that runs on a router and maps one IP address or a group of IP addresses to another IP address or group of IP addresses. To check the sessions on the PortMaster that are using NAT, click Monitor==>NAT Sessions.
PortMaster ID  IP address or name of the selected PortMaster. 
Router Port  Port on which the NAT session exists. 
Type  TCP, UDP, or ICMP. 
Direction  Inbound or outbound. 
Src Address  Source IP address of the NAT session before translation. 
Src Port  Source TCP, UDP, or ICMP port of the NAT session before translation. 
Destination Address  Destination IP address of the NAT session before translation. 
Destination Port  Destination TCP, UDP, or ICMP port of the NAT session before translation. 
Xlt Src Address  Source address of the NAT session after translation. 
Xlt Src Port  TCP, UDP, or ICMP port of the NAT session after translation. 
Xlt Destination Address  Destination address of the NAT session after translation. 
Xlt Destination Port  Destination TCP, UDP, or ICMP port after translation. 
Idle Timeout  Time in minutes the NAT session has been idle.