Extra Help: Nat/Route Mode - Fortinet FortiGate 1U Quick Start Manual

Extra help: NAT/Route mode

This section provides instructions for troubleshooting connection issues in situations
when a NAT/Route configuration is used.
1. Use FortiExplorer if you can't connect tot he FortiGate GUI or CLI
If you can't connect to the FortiGate GUI or CLI, you may be able to connect using
FortiExplorer. See your FortiGate unit's QuickStart Guide for details.
2. Check for equipment issues.
Verify that all network equipment is powered on and operating as expected. Refer to the
QuickStart Guide for information about connecting your FortiGate to the network and about
the information provided by the FortiGate unit LED indicators.
3. Check the physical network connections.
Check the cables used for all physical connections to ensure that they are fully connected
and do not appear damaged. Also check the Unit Operation dashboard widget, which shows
the connection status of FortiGate network interfaces (System > Dashboard > Status).
4. Verify that you can connect to the internal IP address of the FortiGate unit.
Use a web browser to connect to the web-based manager from the FortiGate internal
interface by browsing to its IP address. From the PC, try to ping the internal interface IP
address; for example, ping 192.168.1.99 If you cannot connect to the internal interface,
verify the IP configuration of the PC. Go to the next step when you can connect to the
internal interface.
5. Check the FortiGate interface configurations.
Check the configuration of the FortiGate interface connected to the internal network, and
check the configuration of the FortiGate interface that connects to the Internet to make sure
it includes the proper addressing mode.
6. Verify that you can communicate from the FortiGate unit to the Internet.
Access the FortiGate CLI and use the execute ping command to ping an address or
domain name on the Internet. You can also use the execute traceroute command to
troubleshoot connectivity to the Internet.
10 The FortiGate Cookbook 5.0.