Ultra SAM4W User Guide V1.3
27
Ver1.3
5.8.2 NAT
NAT (Network Address Translation) protocol translates a public IP address in the WAN to several private IP addresses
within the LAN. This page allows users to enable or disable NAT.
Protocol
TCP / UDP / ALL protocol selection
Source IP Address
Defined IP address that would like to take routing action
IP address is 0.0.0.0, which defined to be all external IP information will be
routed.
Incoming Port Range
Network Port (s) Range of the network that would like to take routing action
Destination IP Address
Local Area Network Address of the device which forward to
Destination Port Range
Local Area Network Port (s) to forward to
Commonly used port numbers include:
Application
Port number
Protocol
FTP (data)
20
TCP
FTP (command)
21
TCP
SSH
22
TCP, UDP
HTTP
80
TCP, UDP
POP3
110
TCP
SMTP
25
TCP, UDP