Fortinet FortiGate 50A

16 01-28005-0017-20041101 Fortinet Inc.
Quick installation using factory defaults Getting started
Figure 4: Quick configuration using default settings
The Fortigate DHCP server also assigns the DNS server IP address 192.168.1.99 to
each computer on the internal network. As a result, the FortiGate unit internal
interface acts as a DNS server for the internal network. Using DNS forwarding, the
FortiGate unit forwards DNS requests received from the internal network to the DNS
server IP addresses added to the FortiGate unit configuration and returns lookup
results to the internal network.
For more information about default DHCP server settings see “Factory default DHCP
server configuration” on page 17.
The following procedure describes how to configure your internal network and the
FortiGate unit to use the FortiGate default settings.
1 Connect the FortiGate unit between the internal network and the Internet and turn on
the power.
2 Set the TCP/IP properties of the network computers to obtain an IP address
automatically and a DNS server IP address automatically (using DHCP).
3 From the management computer browse to https://192.168.1.99.
The FortiGate web-based manager appears.
4 Go to System > Network > Interface and select Edit for the external interface.
5 Select one of the following Addressing modes
• Manual: enter a static IP address and netmask, select OK, and go to step 6
• DHCP: to get an IP address from the ISP select DHCP and go to step 9
• PPPoE: to get an IP address from the ISP select PPPoE and go to step 9
6 Go to System > Network > DNS.
7 Select one of the following DNS settings
• Obtain DNS server address automatically: select to get the DNS addresses from
the ISP, select Apply
• Use the following DNS server addresses: select and enter the DNS server
addresses given to you by the ISP, select Apply
8 Go to Router > Static, edit route #1 and change Gateway to the default gateway IP
address from the ISP and select OK.
Network configuration is complete. Proceed to “Next steps” on page 23.
9 Select Retrieve default gateway from server and Override internal DNS options if your
ISP supports them, select OK, and proceed to “Next steps” on page 23.
Go to step 6 if you are not selecting these options.
FortiGate-50A Unit
Internal network
External interface
Configure Manual IP, DHCP, or
PPPoE addressing
Internal interface
192.168.1.99
DHCP server and DNS server
for the internal network
Obtain IP address and
DNS server IP address
automatically
POWER
Internet
INTERNAL EXTERNAL
LINK 100 LINK 100
PWR
STATUS
A