Network Address Translation
Dlink DRO-210i User Guide 33
Consider a scenario where WAN1 is used for internet connectivity. NAT must be enabled
at WAN1 to enable LAN systems to access the internet. The company’s servers
(Web/FTP Server) may be installed at the DMZ interface using public IP Address for
direct access from the internet. NA T should not affect the traffic between DMZ and
WAN1, because DMZ systems are already using public/global IP Addresses. In this case,
NAT can be disabled between DMZ and WAN1.
Say WAN2 Port is us ed to connect some PCs or IP Phones with global IP Addresses. In
this case, NAT is required only for traffic between LAN and WAN1. NAT can be
disabled between WAN2 and WAN1 since WAN2 systems already use global IP
Addresses.
Select NAT →
→→
→ NAT Exception to configure the NAT Exception as explained below.
NAT Exception
NAT between
WAN1 and WAN2
Select Disable to deactivate NAT between WAN1 and WAN2.
NAT between
WAN1 and DMZ
Select Disable to deactivate NAT between WAN1 and DMZ.
NAT between
WAN2 and DMZ
Select Disable to deactivate NAT between WAN2 and DMZ.
Virtual Servers use NAPT (Network Address and Port Translation) to allow remote users
access certain special services on the LAN, such as FTP server for file transfer and STMP
or POP3 for e-mail. The administrator configures the Global IP address, TCP or UDP
protocol and port number used to access the Server. The router redirects requests from
the remote clients to the Internal Server running the specified service on the LAN, by
translating the Global IP/Port to the Private IP/Port of the end server.
Select NAT →
→→
→ Virtual Server/NAPT to configure the Virtual Server/NAPT as
explained below.
Virtual Server/NAPT
Interface Name Select the interface on which the virtual server is to be configured.
Transport Type Select the transport protocol (TCP or UDP) that the application on the
virtual server will use for its connections. The transport type is dependent
on the application that is providing the service. This is mostly used for
non-standard cases where the port numbers are defined by the
administrator.
Web UI
Web UI