Configuring NAT mode

Configuring

Configuring NAT mode

Configuring NAT mode involves defining interface addresses and default routes, and simple firewall policies. You can use the web-based manager or the CLI to configure the FortiGate unit in NAT/Route mode.

Using the web-based manager

After connecting to the web-based manager, you can use the following procedures to complete the basic configuration of the FortiGate unit. Ensure you read the section “Connecting to the web-based manager” on page 18 before beginning.

Configure the interfaces

When shipped, the FortiGate unit has a default address of 192.168.1.99 and a netmask of 255.255.255.0. for either the Port 1 or Internal interface. You need to configure this and other ports for use on your network.

To configure interfaces

1Go to System > Network > Interface.

2Select the edit icon for an interface.

3Set the Addressing Mode for the interface.

For Manual addressing, enter the IP address and netmask for the interface.

For DHCP addressing, select DHCP and complete the following:

Distance

Enter the administrative distance, between 1 and 255 for the

 

default gateway retrieved from the DHCP server. The

 

administrative distance specifies the relative priority of a route

 

when there are multiple routes to the same destination. A

 

lower administrative distance indicates a more preferred route.

Retrieve default gateway from server

Override internal DNS

Enable to retrieve a default gateway IP address from the DHCP server. The default gateway is added to the static routing table.

Enable to use the DNS addresses retrieved from the DHCP server instead of the DNS server IP addresses on the DNS page on System > Network > Options. On FortiGate-100 units and lower, you should also enable Obtain DNS server address automatically in System > Network > Options.

For PPPoE addressing, select PPPoE, and complete the following:

Username

Enter the username for the PPPoE server. This may have

 

been provided by your ISP.

Password

Enter the password for the PPPoE server for the above user

 

name.

Unnumbered

Specify the IP address for the interface. If your ISP has

 

assigned you a block of IP addresses, use one of these IP

 

addresses. Alternatively, you can use, or borrow, the IP

 

address of a configured interface on the router. You may need

 

to do this to minimize the number of unique IP addresses

 

within your network.

 

If you are borrowing an IP address remember the interface

 

must be enabled, or up to function correctly.

Initial Disc Timeout

Initial discovery timeout in seconds. The time to wait before

 

starting to retry a PPPoE discovery. To disable the discovery

 

timeout, set the value to 0.

 

FortiGate-30B FortiOS 3.0 MR6 Install Guide

20

01-30006-0459-20080505

Page 20
Image 20
Fortinet 30B manual Configuring NAT mode, Using the web-based manager, Configure the interfaces

30B specifications

Fortinet's FortiGate 30B is a compact yet powerful security appliance designed for small to medium-sized businesses and branch offices. This next-generation firewall (NGFW) integrates various security functions, helping organizations safeguard their networks without compromising on performance or ease of use.

One of the standout features of the FortiGate 30B is its robust security capabilities. It offers firewall protection, intrusion prevention systems (IPS), antivirus, web filtering, and application control, all in one device. This consolidated approach simplifies security management, enabling companies to deploy a range of protections without the need for multiple products.

The FortiGate 30B utilizes Fortinet's proprietary FortiOS operating system, which allows for centralized management and visibility into network traffic. With features like FortiView, administrators can gain insights into application usage, user activities, and security events, helping them make informed decisions to enhance their security posture.

Performance is another critical aspect of the FortiGate 30B. Equipped with Fortinet's purpose-built security processing units (SPUs), the device is designed to handle high throughput while maintaining low latency. This ensures that businesses can operate smoothly without facing interruptions caused by security measures.

Additionally, the FortiGate 30B supports advanced technologies such as VPN (Virtual Private Network) for secure remote access and SD-WAN (Software-Defined Wide Area Network) capabilities. This combination enables organizations to optimize their network performance and enhance connectivity between branch offices or remote workers, making it an ideal solution for today's flexible work environments.

A highlight of the FortiGate 30B is its ease of deployment. With a user-friendly interface and guided setup wizards, even those with limited IT experience can configure the device quickly. The included FortiCloud service allows for easy management and monitoring, further simplifying the administrative overhead.

Scalability is yet another critical characteristic of the FortiGate 30B. As businesses grow, they can easily expand their security infrastructure by integrating additional Fortinet solutions into their network, maintaining a cohesive security strategy without disrupting operations.

In summary, the FortiGate 30B offers a comprehensive, high-performance security solution for small and medium-sized organizations. With its integrated features, advanced technologies, and user-friendly management capabilities, it empowers businesses to protect their networks effectively while ensuring optimal performance and scalability for future growth.