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padi
Visitor III
September 22, 2025
Question

Create SAN certificate with Let's Encrypt on FortiGate

  • September 22, 2025
  • 3 replies
  • 635 views

Hi,

is it possible to provision a Let's Encrypt certificate with an additional domain (SAN certificate) on a FortiGate 200F. We are using the firmware 7.0.11 at the moment.

In the wizzard there is only one input field for domain.

 

Padi

3 replies

Sheikh
Staff
Staff
September 22, 2025

Hello @padi 

 

Per admin guide below "

  • The Subject Alternative Name (SAN) field is automatically filled with the FortiGate DNS hostname. It cannot be edited, wildcards cannot be used, and multiple SANs cannot be added.

 

https://docs.fortinet.com/document/fortigate/7.0.0/new-features/822087/acme-certificate-support?

 

regards,

 

Sheikh

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padi
padiAuthor
Visitor III
September 22, 2025

Thanks for the fast reply.
I already was able to provision my certificates from Let's Encrpyt. But the origin problem is, that we have two WAN connections from different providers, so two diffrent public IPs. Both are listen for SSL-VPN. But in the settings, I only can select one certificate. So I thought I could provision a Let's Encrypt Certificate with name vpn1.example.com and as SAN name vpn2.example.com.

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