ZTNA

[Tannu86]

Hello everybody,
I have a problem with ZTNA, I performed the various configuration steps that I found in the official guide, but I can't get the remote access in https of my Vcenter and my Firewall to work. It gives me this error for my fortigate :403 Forbidden: Wrong proxy service was requested
The web server reported that an error occurred while trying to access the website. Please go back to the previous page.
URL https//:33.33.45.66:4556

while for the VCenter:
ZTNA Access Denied
The page you requested has been blocked by a ZTNA restriction.
Details: API Gateway Denied.

can you give me a hand?
Thanks so much

[Anthony_E]

Hello,

Thank you for using the Community Forum.

I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.

Regards,

[btan]

Hello,

Based on your description, looks like you are implementing:

https://docs.fortinet.com/document/fortigate/7.2.3/administration-guide/101256/ztna-tcp-forwarding-a...

Your issue symptom has too many possibilities. Let's try to narrow it down.
Your first error: Forbidden: Wrong proxy service was requested
The web server reported that an error occurred while trying to access the website. Please go back to the previous page.
> This can possibly due to ZTNA cert somehow not ready in the endpoint. Check if your endpoint in EMS endpoint pane, 'ZTNA Serial Number' should be visible.

And for your vcenter error:

ZTNA Access Denied
The page you requested has been blocked by a ZTNA restriction.
Details: API Gateway Denied.

It can be due to misconfiguration on 'config api-gateway' part in FGT. Or the ZTNA destination in endpoint profile

config firewall access-proxy
    edit "ZTNA-tcp-server"
        set vip "ZTNA-tcp-server"
        set client-cert enable
        config api-gateway

Nevertheless, you can try below debug command in FGT and reproduce the issue:

CLI session1:

#diag debug reset

#diag wad debug enable category all

#diag wad debug enable level verbose

#diag debug console timestamp en

#diag wad filter src x.x.x.x <--- endpoint public IP address

#diag wad filter dport 4556 <--- your configured port in proxy gateway

#diag debug enable

~Reproduce the issue~

Open another CLI session2:

diag wad user list

diag wad session list

diag test app wad 1000

diag test app wad 155

The output may give clues why it is not working.

Logs in ZTNA traffic will be helpful as well:
FGT > Logs & Reports > ZTNA traffic

[Tannu86]

Hello and thanks for your advice, I will try to replicate your content.
I'll update you as soon as possible.
Best regards

[jbrines]

Hi @Tannu86 ,

Did you get this resolved, I am experiencing the same issue with accessing file shares on a File Server