Technical TIp: How to troubleshoot 'Cannot Access Site/Application on SSL-VPN web mode'

hlngan · ‎04-08-2022

Description

This article describes a SSL-VPN web application access problem.

Scope

When using SSL-VPN, some of the customized application/web site might not be work with web mode.

Solution

Confirm the following:

- app/site can be access through tunnel mode with FortiClient.

- Internal access to the app/site without any problem.

If so, following below to collect the information:

- Configuration of the FortiGate.

- HAR file while access the page on the SSL-VPNweb mode.

1) Open a Chrome browser.

2) Login with credential on the SSL-VPN web page .

3) Press F12 to open the DevTools on Chrome.

4) Go to the Network tab.

1) Press or 'Ctrl + E' to start the record.

2) Browser the problematic website/ access the problematic application through the SSL-VPN web mode on the same page.

3) Stop the record and download it.

- Also, provide a testing SSL-VPNaccount.

- And any account associate site/Apps to replicate the issue (the account for the site/Apps do not need real data).

Open a TAC ticket to support and attached above information to the ticket.