FortiGate SSL VPN supports TLS 1.3. To connect to FortiGate SSL VPN using TLS 1.3, it is necessary to enable TLS 1.3 in Windows 10/11. Normally it is possible to enable it via the Internet browser properties:
- In Windows computer, start the Run prompt (Win + R) and type 'inetcpl.cpl', then press the Enter key.
- The Internet Properties window will be opened. Go to the Advanced section.
- Under the security section, check the box TLS 1.3.
- Apply the changes and restart the browser.
If the FortiClient still fails to connect to FortiGate SSL VPN using TLS 1.3 (Webmode is working fine), then it is necessary to check and edit the computer registry.
First, collectthe FortiGate SSL VPN debug. From the debug it is possible to see that FortiClient is not able to initiate an SSL connection using TLS 1.3:
dia de dis
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dia de app sslvpn -1
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FortiGate SSL VPN Debug Output:
// Forticlient failed to connect //
[19293:root:2fc]allocSSLConn:307 sconn 0x7f0946f57a00 (0:root)
[19293:root:2fc]SSL state:before SSL initialization (10.47.4.151)
[19293:root:2fc]SSL state:before SSL initialization:DH lib(10.47.4.151)
[19293:root:2fc]SSL_accept failed, 5:(null)
[19293:root:2fc]Destroy sconn 0x7f0946f57a00, connSize=0. (root)
// Webmode can access using TLS 1.3 //
[19293:root:302]SSL established: TLSv1.3 TLS_AES_256_GCM_SHA384 <<===
[19293:root:302]No client certificate
[19293:root:302]req: /remote/login
[19293:root:302]rmt_web_auth_info_parser_common:492 no session id in auth info
[19293:root:302]rmt_web_get_access_cache:841 invalid cache, ret=4103
[19293:root:302]User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36 Edg/116.0.1938.81 <<====
Next, check and edit the computer registry to enable TLS 1.3:
- Go to \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols
- If 'TLS 1.3' is not displaying as a child path under 'Protocols', create it. 'Right-click' 'Protocols', create 'new key', and name it 'TLS 1.3'.
- Then create another new key under 'TLS 1.3', and name it 'Client'.
- In the 'Client' section,create 2 DWORD (32-bit) values, name them 'DisabledByDefault' and 'Enabled' with default value 0.
- For 'Enabled', change the value to '1'.
- Final Look at the registry:
- Apply the changes and close the registry editor window.
- Restart the computer.
After restarting the computer, the FortiClient can connect to the FortiGate SSL VPN using TLS 1.3. SSL VPN debug on FortiGate:
[19293:root:31d]SSL established: TLSv1.3 TLS_AES_256_GCM_SHA384<-
[19293:root:31d]req: /remote/login
[19293:root:31d]User Agent: FortiSSLVPN (Windows NT; SV1 [SV{v=02.01; f=07;}])<-
[19293:root:31d]sslvpn_authenticate_user:183 authenticate user: [local] <-
[19293:root:31d][fam_auth_send_req_internal:652] The user local is authenticated.
[19293:root:31d]fam_do_cb:665 fnbamd return auth success.
FAQs
At the point of writing (14th Feb 2022), FortiClient v6. 4.7 and v7. 0.2 support Windows 11. FortiClient end users are advised to install FCT v6.
Does FortiClient VPN work on Windows 11? ›
At the point of writing (14th Feb 2022), FortiClient v6. 4.7 and v7. 0.2 support Windows 11. FortiClient end users are advised to install FCT v6.
How do I fix unable to establish the VPN connection in FortiClient? ›
Try re-installing the FortiClient and test the connection. Most probably, it should work. If it still does not work, try re-installing Windows on the client machine. If the issue is still not resolved, it is recommended to use the upgraded version of FortiClient.
How to enable TLS 1.2 and TLS 1.3 on Windows 10? ›
To set the protocols to be used for secure connections,
- Press Windows key + R to open a Run box, type control and press Enter.
- Find Internet Properties and open the dialogue.
- On the Advanced tab, scroll down to the Security section and select TLS 1.2 and TLS 1.3.
For Chrome
- Open the Developer Tools (Ctrl+Shift+I)
- Select the Security tab.
- Navigate to the WebAdmin or Cloud Client portal.
- Under Security, check the results for the section Connection to check which TLS protocol is used.
Temporarily disable the firewall and try connecting again to see if it resolves the issue. You may need to configure firewall rules to allow VPN traffic if it does. If the issue persists, try uninstalling and reinstalling the VPN client software.
How to connect SSL VPN in Windows 11? ›
On your taskbar, select the Network, Volume, Battery icon > VPN. From the list of VPN connection names, select the one you want, and then select Connect. If prompted, enter your username and password or other sign in info.
How to check TLS version in FortiClient? ›
Technical Tip: How to check TLS Version used by FortiClient machine when trying to connect to FortiGate using SSL VPN
- Run the packet capture then initiate the connection from the FortiClient.
- Stop the debug then download the .pcap file.
- Open the .pcap file using the Wireshark application.
If your VPN is not working or you are experiencing VPN disconnection issues, try the following troubleshooting tips:
- Test your internet connection. ...
- Check your VPN credentials. ...
- Restart your VPN software. ...
- Clear old VPN software from your device. ...
- Check your VPN settings. ...
- Keep your VPN up-to-date. ...
- Reinstall the VPN app.
What does “unable to establish VPN connection” mean? The message “unable to establish VPN connection” indicates a failure to create a secure link between your device and the VPN server. This could be due to incorrect settings, network issues or problems with the VPN service itself.
Step to enable TLS 1.2 in Internet Explorer Version 11
- Open Internet Explorer.
- Click on Tools menu.
- Select Internet options.
- Select the Advanced tab.
- Scroll down to Security category and tick the box for Use TLS 1.2.
- Click OK.
- Close your browser and restart Internet Explorer.
How to check which TLS protocol is being used
- Press Windows + R to open the Run box.
- Type inetcpl. cpl and then select OK. Then, the Internet Properties window is opened.
- In the Internet Properties window, select the Advanced tab and scroll down to check the settings related to TLS.
Open the Tools menu (click on the tools icon or type Alt - x) and select Internet options. Select the Advanced tab. Scroll down to the bottom of the Settings section. If TLS is not enabled, select the checkboxes next to Use TLS 1.0, Use TLS 1.1, and Use TLS 1.2.
Should TLS 1.3 be enabled? ›
In a nutshell, TLS 1.3 is faster and more secure than TLS 1.2. One of the changes that makes TLS 1.3 faster is an update to the way a TLS handshake works: TLS handshakes in TLS 1.3 only require one round trip (or back-and-forth communication) instead of two, shortening the process by a few milliseconds.
How do I know if my TLS is disabled? ›
-Press the Windows key + R to start Run, type regedit, and press Enter or click OK. -If you can't find any of the keys or if their values are not correct, then TLS 1.2 is not enabled.
How do I know if TLS is enabled Windows 10? ›
How to identify if an SSL/TLS protocol is enabled/disabled
- Click Start or press the Windows key.
- In the Start menu, either in the Run box or the Search box, type regedit and press Enter. ...
- Navigate to follow the registry path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols.
A virtual private network (VPN) connection on your Windows 11 PC can help provide a more secure connection and access to your company's network and the internet—for example, when you're working in a public location such as a coffee shop, library, or airport.
Is Globalprotect VPN Compatible with Windows 11? ›
To install Palo Alto Global Protect VPN on a Windows computer, follow the instructions below. Instructions listed below are for Windows 11. For Mac instructions, please view this Knowledge Base article. Note: Please make sure you only run one VPN at a time, and disconnect the VPN once you are finished using it.
Is Windows 11 built-in VPN any good? ›
Though it would be nice if Microsoft had a built-in VPN, the Microsoft VPN client you can find in the Settings in Windows 10 or 11 isn't likely what you want in a VPN. This functionality is more often used for companies or schools that want to set up their own network and VPN to allow for remote access to the system.
How do I connect to VPN on Windows 11? ›
Set Up VPN on Windows 11
- Click the Windows Start button and select Settings.
- Under Windows Settings, select Network & Internet at the left.
- At the right select VPN.
- Click Add VPN.
- In the dialog box that opens:
- Set VPN provider to "Windows (built-in)".
- Set Connection name to "UWSP VPN".
