ssl vpn proxy error the proxy server could not handle the request

[Harishviji]

Hi Guys,

Good day

While I connect to the Forticlient VPN I am getting an error like " SSL VPN proxy error the proxy server could not handle the request " I am using Ubuntu 23.0 Version. Can anyone help me with this

Thanks in advance 

[chutyas5]

Javascript is a common pain point. Some of it needs to be re-written to keep things loaded through the VPN portal. It seems like there's no silver bullet, so sometimes some parts of some sites break. My advice would be to reach out to the TAC to get a confirmation if this is the case, and if so, to get a bug report opened for it https://100001.onl/ .

[AEK]

Hi @Harishviji 

I guess you are using Web SSL VPN, right.

Try ping from your FG to your back-end server to which you are trying to access.

In case you can't ping it from FG then try fix any routing issue that may have caused this connectivity problem.

[Harishviji]

Hi @AEK  I can able to ping the back-end server..

[AEK]

Hi @Harishviji 

Can you confirm if you mean tunnel mode or Web mode.

Also can you try the following?

diag debug flow filter addr <Server-IP>
diag debug flow filter proto 1
diag debug flow show function-name enable
diag debug flow show iprope enable
diag debug flow trace start 50
diag debug enable

Then initiate a ping command from your client to the server.