Allowing Inbound Traffic Using a Public IP Address

Use Case: You host an RDP server on the DMZ. Your ISP has provided a static IP address that you want to expose to the public as your RDP server address. You want to allow Internet user to access the RDP server by using the specified public IP address.

Solution 1: Perform the following tasks to complete the configuration:

 1. Go to the Networking > Address Management page to create a host address object with the IP 192.168.12.101 called “RDPServer” and a host address object with the IP 172.39.202.102 called “PublicIP.”

 2. Go to the Networking > Service Management page to create a TCP service object with the port 3389 called “RDP.”

 3. Go to the Firewall > NAT > Port Forwarding page to create a port forwarding rule as follows.

Original Service

RDP

Translated Service

RDP

Translated IP

RDPServer

WAN

WAN1

WAN IP

PublicIP

Enable Port Forwarding

On

Create Firewall Rule

On

 4. Or go to the Firewall > NAT > Advanced NAT page to create an advanced NAT rule as follows.

From

WAN1

To

DMZ

Original Source Address

ANY

Original Destination Address

PublicIP

Original Services

RDP

Translated Source Address

ANY

Translated Destination Address

RDPServer

Translated Services

RDP

 5. Then go to the Firewall > Access Control > ACL Rules page to create a firewall rule as follows to allow access:

From Zone

WAN

To Zone

DMZ

Services

RDP

Source Address

ANY

Destination Address

RDPServer

Match Action

Permit

Note When you create the port forwarding rule, you can check Create Firewall Rule to automatically generate the firewall rule.

 

Solution 2: For this use case, you can use the DMZ Wizard to complete the configuration.

 1. Click Configuration Wizards > DMZ Wizard.

 2. In the DMZ Configuration page, configure a DMZ network as follows:

Name

DMZ

IP

192.168.12.1

Netmask

255.255.255.0

Port

GE6

Zone

DMZ

 3. In the DMZ Service page, create a DMZ service as follows:

Original Service

RDP

Translated Service

RDP

Translated IP

RDPServer

WAN

WAN1

WAN IP

PublicIP

Enable DMZ Service

On

Create Firewall Rule

On

 4. Click Finish to apply your settings.

 5. A firewall rule will be automatically generated as follows to allow access.

From Zone

WAN

To Zone

DMZ

Services

RDP

Source Address

ANY

Destination Address

RDPServer

Match Action

Permit