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SSL VPN SSL VPN configurations consist of one section, followed by one or more VPN sections: 1 0 1 1 1 0 0 0 0 1 SSLVPN_Name Optional_Description ssldemo.fortinet.com:10443 Encrypted/NonEncrypted_UsernameString 0 0 1 1 1 1 0 Encrypted/NonEncrypted_PasswordString 1 0 0 0 1 windows windows 1 2 %LOCALAPPDATA%\Microsoft\Teams\Current\Teams.exe %appdata%\Zoom\bin\Zoom.exe C:\Program Files (x86)\Microsoft\Skype for Desktop\skype.exe %LOCALAPPDATA%\GoToMeeting\18068\g2mcomm.exe %LOCALAPPDATA%\GoToMeeting\18068\g2mlauncher.exe %LOCALAPPDATA%\GoToMeeting\18068\g2mstart.exe webex.com gotomeeting.com youtube.com The following table provides the SSL VPN XML tags, as well as the descriptions and default values where applicable. XML tag Description Default value elements Enable SSL VPN. Boolean value: [0 | 1] 1 FortiClient disables Windows OS DNS cache when an SSL VPN tunnel is established. The DNS cache is restored after SSL VPN tunnel is disconnected. If you observe that FSSO clients do not function correctly when an SSL VPN tunnel is up, use to control the DNS cache. 0 When this setting is 0, the custom DNS server from SSL VPN is not added to the physical interface. When this setting is 1, the custom DNS server from SSL VPN is prepended to the physical interface. Boolean value: [0 | 1] 0 When this setting is 0, FortiClient uses the new SSL driver. When this setting is 1, FortiClient uses the legacy SSL driver. Boolean value: [0 | 1] 1 DTLS supported only by FortiClient (Windows). When this setting is 0, FortiClient uses TLS, even if dtls-tunnel is enabled on the FortiGate. When this setting is 1, FortiClient uses DTLS, if it is enabled on the FortiGate, and tunnel establishment is successful. If dtls-tunnel is disabled on the FortiGate, or tunnel establishment is not successful, FortiClient uses TLS. DTLS tunnel uses UDP instead of TCP and can increase throughput over VPN. Boolean value: [0 | 1] When this setting is 0, FortiClient allows IPv6 connection. When this setting is 1, FortiClient blocks IPv6 connection. FortiClient uses only IPv4 connectivity when the SSL VPN tunnel is up. Boolean value: [0 | 1] 0 When this setting is 0, FortiClient creates the DHCP public server route upon tunnel establishment. When this setting is 1, FortiClient does not create the DHCP public server route upon tunnel establishment. Boolean value: [0 | 1] 0 When this setting is 0, FortiClient registers the SSL VPN adapter's address in the Active Directory (AD) DNS server. When this setting is 1, FortiClient does not register the SSL VPN adapter's address in the AD DNS server. When this setting is 2, FortiClient registers only its own tunnel interface IP address in the AD DNS server. 0 When this setting is 0 and an invalid server certificate is used, FortiClient displays a popup that allows the user to continue with the invalid certificate. When this setting is 1 and an invalid server certificate is used, FortiClient does not display a popup and stops the connection. Boolean value: [0 | 1] 0 Retry restoring an active VPN session connection. Boolean value: [0 | 1] The XML tag may contain one or more elements. Each has the following:

Information used to establish an SSL VPN connection on_connect: a script to run right after a successful connection on_disconnect: a script to run just after a disconnection The following table provides VPN connection XML tags, the description, and the default value (where applicable). XML tag Description Default value VPN connection name. Optional description to identify the VPN connection. SSL server IP address or FQDN, along with the port number as applicable. Default port number: 443 Encrypted or non-encrypted username on SSL server. Enable single user mode. If enabled, new and existing VPN connections cannot be established or are disconnected if more than one user is logged on the computer. Boolean value: [0 | 1] 0 Enter a disclaimer message that appears when the user attempts VPN connection. The user must accept the message to allow connection. How FortiClient determines the order in which to try connection to the SSL VPN servers when more than one is defined. FortiClient calculates the order before each SSL VPN connection attempt. When the value is 0, FortiClient tries the order explicitly defined in the tag. When the value is 1, FortiClient determines the order by the ping response speed. When the value is 2, FortiClient determines the order by the TCP round trip time. 0 Enable SAML SSO for the VPN tunnel. For this feature to function, the administrator must have configured the necessary options on the Service Provider and Identity Provider. See SAML support for SSL VPN. Given user's encrypted or non-encrypted password. elements The XML sample provided above only shows XML configuration when using a username and password. See Sample XML using certificate authentication for example of XML configuration for certificate authentication. elements Elements for common name of the certificate for VPN logon. Enter the type of matching to use: simple: exact match wildcard: wildcard regex: regular expressions Enter the pattern to use for the type of matching. elements Elements about the issuer of the certificate for VPN logon. Enter the type of matching to use: simple: exact match wildcard: wildcard Enter the pattern to use for the type of matching. Display a warning message if the server certificate is invalid. Boolean value: [0 | 1] 0 When this setting is 1, non-administrator users can use local machine certificates to connect SSL VPN. When this setting is 0, non-administrator users cannot use machine certificates to connect SSL VPN. Boolean value: [0 | 1] 0 Request a certificate during connection establishment. Boolean value: [0 | 1] 0 Request a username. Boolean value: [0 | 1] 1 Indicates whether FortiClient received a VPN configuration from FortiGate or EMS. When this setting is 1, FortiClient received a VPN configuration from FortiGate or EMS, and the user can view the VPN configuration when connected to FortiGate or EMS. If FortiClient is disconnected from FortiGate or EMS after connecting and receiving the VPN configuration, the user can view and delete the VPN configuration but cannot edit it. When this setting is 0, FortiClient did not receive a

DescriptionThis article describes how to troubleshoot if the CISCO unity VPN client is causing problems or any conflict to connect the dial-up VPN with FortiClient in Windows.ScopeFortiGate, FortiClient, WinOS.SolutionThe endpoint can be configured with multiple VPN Clients. Once the FortiClient is configured in the endpoint, it works with the Windows OS web socket. Once the dial-up VPN is configured in FortiGate but the FortiClient is not connecting to the user and credentials the IKE debug has to be taken.The following article can be followed to take the IKE debug: Technical Tip: Understanding IPsec (iked) debug logsIf the following output is being found in the debug report it can be considered that the CISCO UNITY VPN client is being configured in the Windows workstation.ike V=root:0:869f66bd00c82fc4/0000000000000000:86335: responder: aggressive mode get 1st message...ike V=root:0:869f66bd00c82fc4/0000000000000000:86335: VID CISCO-UNITY 12F5F28C457168A9702D9FE274CC0100 ike V=root:0::86335: received peer identifier FQDN '5656'ike V=root:0: IKEv1 Aggressive, comes 78.66.43.50:500->178.174.162.164 6ike V=root:0:869f66bd00c82fc4/0000000000000000:86335: trans_id = KEY_IKE.ike V=root:0:869f66bd00c82fc4/0000000000000000:86335: encapsulation = IKE/noneike V=root:0:H24-VPN:86335: DPD negotiatedike V=root:0:H24-VPN:86335: XAUTHv6 negotiatedike V=root:0:H24-VPN:86335: peer supports UNITY ike V=root:0:H24-VPN:86335: enable FortiClient license checkike V=root:0:H24-VPN:86335: FEC vendor ID received FEC but IP not set

DescriptionThis article describes how, when creating a new VPN connection with FortiClient v7.4.1 or v7.4.2 that uses IKEv2 as the protocol with the default VPN settings, NAT-T is disabled.ScopeUsers connecting from the same public IP or sitting behind a NAT device can experience symptoms such as no network access and one-way traffic (zero bytes received shown in FortiClient VPN status) after connecting to VPN when using IPSec VPN with IKEv2 as the protocol.SolutionTo enable NAT-Traversal on a connection profile, the following actions can be taken:Unmanaged or unlicensed FortiClient: On the FortiClient GUI, edit the VPN connection and go ahead with one of the following two options:Option 1: Change the 'Encapsulation' from default - 'IKE UDP Port' to 'Auto':Option 2: Take a backup of the configuration and use a text editor to edit the configuration file, change the value for 'nat_traversal' from 0 to 1. Save the file and restore the configuration to FortiClient:EMS managed FortiClient:If the Remote Access (VPN) profile is created in previous versions of EMS and migrated to EMS v7.4.1+, it will have the old settings until the profile is changed, updated, and saved.Any new IKEv2 VPN profile created in EMS v7.4.1+ with Encapsulation set as 'IKE UDP Port' will always have NAT-T=0 0 will automatically always set 0The solution is to set encapsulation to Auto (XML tag 2), which allows control of .FortiGate Configuration:If FortiGate is always behind NAT for dial-up IPSec tunnels, it is recommended to force-enable NAT on FortiOS IKEv2 tunnel settings.config vpn ipsec phase1-interface edit set nattraversal forced nextendNote: For the issue described in this document, the above configuration change (nattraversal set to forced) will not be helpful.macOS FortiClient:A related issue may affect macOS FortiClient v7.4.2, which will be resolved in FortiClient v7.4.3+. The issue is related to using a UDP port less than