Transparent Mode Scenarios; Transparent Mode Scenario 1; Setting Up Transparent Mode For Scenario 1 - D-Link DFL-1660 User Manual

4.7.3. Transparent Mode Scenarios

The other consequence of not using NAT is that IP addresses of users accessing the Internet usually
need to be public IP addresses.
If NATing needs to be performed in the example above to hide individual addresses from the
Internet, it would have to be done by a device (possibly another NetDefend Firewall) between the
192.168.10.0/24 network and the public Internet. In this case, internal IP addresses could be used by
the users on Ethernet network pn2.
4.7.3. Transparent Mode Scenarios
Scenario 1
The firewall in Transparent Mode is placed between an Internet access router and the internal
network. The router is used to share the Internet connection with a single public IP address. The
internal NATed network behind the firewall is in the 10.0.0.0/24 address space. Clients on the
internal network are allowed to access the Internet via the HTTP protocol.
Figure 4.14. Transparent Mode Scenario 1
Example 4.14. Setting up Transparent Mode for Scenario 1
Web Interface
Configure the interfaces:
1. Go to Interfaces > Ethernet > Edit (wan)
2. Now enter:
• IP Address: 10.0.0.1
• Network: 10.0.0.0/24
• Default Gateway: 10.0.0.1
• Transparent Mode: Enable
3. Click OK
4. Go to Interfaces > Ethernet > Edit (lan)
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Chapter 4. Routing