Fortinet FortiGate FortiGate-100A, Administration Manual

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System network Routing table list
FortiGate-100A Administration Guide 01-28006-0068-20041105
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You can configure primary and secondary DNS server addresses, or you can
configure the FortiGate unit to obtain DNS server addresses automatically. To obtain
addresses automatically, at least one interface must use the DHCP or PPPoE
addressing mode. See
“DHCP” on page 50 . See “PPPoE” on page 51 .
If you enable DNS Forwarding on an interface, hosts on the attached network can use
the interface IP address as their DNS server. DNS requests sent to the interface are
forwarded to the DNS server addresses you configured or that the FortiGate unit
obtained automatically.
Figure 11: DNS
To add DNS server IP addresses
1 Go to System > Network > DNS .
2 Change the primary and secondary DNS server IP addresses as required.
3 Select Apply to save the changes.
Routing table (Transparent Mode)
In Transparent mode, you can configure routing to add static routes from the
FortiGate unit to local routers.
Routing table list
Figure 12: Routing table
Obtain DNS server
address automatically When DHCP is used on an interface, also obtain the DNS server IP
address. Available only in NAT/Route mode.
Primary DNS Server Enter the primary DNS server IP address.
Secondary DNS Server Enter the secondary DNS server IP address.
Enable DNS
forwarding from Enable the check boxes of the interfaces to which DNS Forwarding
applies. Available only in NAT/Route mode.