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KadiatouDiallo
New Member
April 23, 2025
Question

VPN IPSec configuration on Fortigate 90G

  • April 23, 2025
  • 2 replies
  • 3655 views

Hello,

I need help to configure IPsec VPN on my FortiGate.

I have created the users and configured the tunnel, but I can't access it via FortiClient.

I really need your help.

 

2 replies

funkylicious
SuperUser
SuperUser
April 23, 2025

Hi,

Can you please share the output of the ipsec configuration ( and sanitize/hide sensitive information like public IP and PSK ) and describe the issue that you have ?

show vpn ipsec phase1-interface

show vpn ipsec phase2-interface 

"jack of all trades, master of none"
KadiatouDiallo
New Member
April 23, 2025

The following are my config:

 

image.pngimage.pngimage.pngimage.png

funkylicious
SuperUser
SuperUser
April 23, 2025

ok, base on your output the forticlient vpn configuration should look something like this :

where the Pre-shared key is what you have configured and if you have a peer id configured you should put it in the Local ID field.

 

afterwards, you should have firewall rules from the source interface Access-Distant and source address object range 172.16.10.10-172.16.10.20 to whatever destination interface and destination object you need.

 

L.E. in order to try and debug the issue that you have, you should look at https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-IPsec-VPN-tunnels/ta-p/195955 and start the debug, then initiate a connection.

 

Screenshot 2025-04-23 at 14.25.24.pngScreenshot 2025-04-23 at 14.26.16.pngScreenshot 2025-04-23 at 14.26.44.png

"jack of all trades, master of none"
KadiatouDiallo
New Member
April 23, 2025

My WAN interface has a private address, not a public address.

dingjerry_FTNT
Staff
Staff
April 23, 2025

Hi @KadiatouDiallo ,

 

You have to make sure that your FortiClient can reach your WAN interface.  

 

If your client can't reach your WAN interface, how can they connect to the VPN?

KadiatouDiallo
New Member
April 24, 2025

I'm currently unable to access it via the WAN interface.

I'm using FortiOS version 7.0.12.