ERR_EMPTY_RESPONSE on Fortinet Captive Portal for Specific Users and Devices

[Nalunet]

Somos uma empresa fornecedora de Portal Cativo externo, operando em diversos modelos Fortinet e atendendo diversos clientes. No entanto, estamos enfrentando dificuldades com alguns clientes. Curiosamente, não é um problema universal, mas parece afetar utilizadores e dispositivos específicos. O portal cativo aparece no dispositivo móvel, mas quando o indivíduo finaliza o cadastro, é exibida uma mensagem de erro: "Esta página não está funcionando. Nenhum dado foi enviado pela fortinet.

ERR_EMPTY_RESPONSE."

Estamos nos perguntando se isso pode estar relacionado ao portal pós-cativo do site final acessado. Existe algum padrão ou padrão para entender esse erro?

[Markus_M]

Translating to English:
We are an external Captive Portal supplier company, operating on different Fortinet models and serving different customers. However, we are experiencing difficulties with some customers. Interestingly, it is not a universal problem, but appears to affect specific users and devices. The captive portal appears on the mobile device, but when the individual completes registration, an error message appears: "This page is not working. No data was sent by fortinet. ERR_EMPTY_RESPONSE." We're wondering if this might be related to the post-captive portal of the final site accessed. Is there any pattern or pattern to understand this error?

Answering to it:

How are you registering here? Is this a FortiAuthenticator that hosts the portal? Or FortiGuest, FortiPortal or FortiGate directly?

Do you have any error message on the captive portal hosting device when this error appears?

Best regards,

Markus

[Nalunet]

We use FortiGate, and this error occurs when we request the release using a post to the URL like this: https://10.152.100.1:1003/fgtauth?magic=040a121c121906f9&username=88:1e:6b:90:53:28&password=88:1e:6...

where 10.152.100.1 is the controller's IP.

IPs and MACs are fictitious there.

[ebilcari]

Is the portal offered by an external web server that manages the registration of the users?

[Nalunet]

Yes, externo.