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About Point-to-Site VPN. 16 minutes to read. Contributors.
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In this article A Point-to-Site (P2S) VPN gateway connection lets you create a secure connection to your virtual network from an individual client computer. A P2S connection is established by starting it from the client computer. This solution is useful for telecommuters who want to connect to Azure VNets from a remote location, such as from home or a conference. P2S VPN is also a useful solution to use instead of S2S VPN when you have only a few clients that need to connect to a VNet. This article applies to the Resource Manager deployment model.
What protocol does P2S use? Point-to-site VPN can use one of the following protocols:. OpenVPN, an SSL/TLS based VPN protocol.
An SSL VPN solution can penetrate firewalls, since most firewalls open TCP port 443, which SSL uses. OpenVPN can be used to connect from Android, iOS, Linux and Mac devices (OSX versions 10.11 and above). Secure Socket Tunneling Protocol (SSTP), a proprietary SSL-based VPN protocol. An SSL VPN solution can penetrate firewalls, since most firewalls open TCP port 443, which SSL uses. SSTP is only supported on Windows devices. Azure supports all versions of Windows that have SSTP (Windows 7 and later). IKEv2 VPN, a standards-based IPsec VPN solution.
IKEv2 VPN can be used to connect from Mac devices (OSX versions 10.11 and above). Note IKEv2 and OpenVPN for P2S are available for the Resource Manager deployment model only. They are not available for the classic deployment model.
How are P2S VPN clients authenticated? Before Azure accepts a P2S VPN connection, the user has to be authenticated first. There are two mechanisms that Azure offers to authenticate a connecting user. Authenticate using native Azure certificate authentication When using the native Azure certificate authentication, a client certificate that is present on the device is used to authenticate the connecting user. Client certificates are generated from a trusted root certificate and then installed on each client computer. You can use a root certificate that was generated using an Enterprise solution, or you can generate a self-signed certificate.
The validation of the client certificate is performed by the VPN gateway and happens during establishment of the P2S VPN connection. The root certificate is required for the validation and must be uploaded to Azure. Authenticate using Active Directory (AD) Domain Server AD Domain authentication allows users to connect to Azure using their organization domain credentials. It requires a RADIUS server that integrates with the AD server.
Organizations can also leverage their existing RADIUS deployment. The RADIUS server could be deployed on-premises or in your Azure VNET.
During authentication, the Azure VPN Gateway acts as a pass through and forwards authentication messages back and forth between the RADIUS server and the connecting device. So Gateway reachability to the RADIUS server is important. If the RADIUS server is present on-premises, then a VPN S2S connection from Azure to the on-premises site is required for reachability. The RADIUS server can also integrate with AD certificate services.
This lets you use the RADIUS server and your enterprise certificate deployment for P2S certificate authentication as an alternative to the Azure certificate authentication. The advantage is that you don’t need to upload root certificates and revoked certificates to Azure. A RADIUS server can also integrate with other external identity systems. This opens up plenty of authentication options for P2S VPN, including multi-factor options. Note For Windows clients, you must have administrator rights on the client device in order to initiate the VPN connection from the client device to Azure. Users use the native VPN clients on Windows and Mac devices for P2S. Azure provides a VPN client configuration zip file that contains settings required by these native clients to connect to Azure.
For Windows devices, the VPN client configuration consists of an installer package that users install on their devices. For Mac devices, it consists of the mobileconfig file that users install on their devices. The zip file also provides the values of some of the important settings on the Azure side that you can use to create your own profile for these devices. Some of the values include the VPN gateway address, configured tunnel types, routes, and the root certificate for gateway validation. Note Starting July 1, 2018, support is being removed for TLS 1.0 and 1.1 from Azure VPN Gateway. VPN Gateway will support only TLS 1.2. Only point-to-site connections are impacted; site-to-site connections will not be affected.
If you’re using TLS for point-to-site VPNs on Windows 10 clients, you don’t need to take any action. If you are using TLS for point-to-site connections on Windows 7 and Windows 8 clients, see the for update instructions. Which gateway SKUs support P2S VPN?
SKU S2S/VNet-to-VNet Tunnels P2S SSTP Connections P2S IKEv2 Connections Aggregate Throughput Benchmark BGP Basic Max. 128 Not Supported 100 Mbps Not Supported VpnGw1 Max. 250 650 Mbps Supported VpnGw2 Max.
500 1 Gbps Supported VpnGw3 Max. 1000 1.25 Gbps Supported (.) Use if you need more than 30 S2S VPN tunnels. Aggregate Throughput Benchmark is based on measurements of multiple tunnels aggregated through a single gateway. The Aggregate Throughput Benchmark for a VPN Gateway is S2S + P2S combined. If you have a lot of P2S connections, it can negatively impact a S2S connection due to throughput limitations. The Aggregate Throughput Benchmark is not a guaranteed throughput due to Internet traffic conditions and your application behaviors.
These connection limits are separate. For example, you can have 128 SSTP connections and also 250 IKEv2 connections on a VpnGw1 SKU. Pricing information can be found on the page. SLA (Service Level Agreement) information can be found on the page. VpnGw1, VpnGw2, and VpnGw3 are supported for VPN gateways using the Resource Manager deployment model only. The Basic SKU is considered a legacy SKU.
The Basic SKU has certain feature limitations. You can't resize a gateway that uses a Basic SKU to one of the new gateway SKUs, you must instead change to a new SKU, which involves deleting and recreating your VPN gateway. Verify that the feature that you need is supported before you use the Basic SKU. For Gateway SKU recommendations, see. Note The Basic SKU does not support IKEv2 or RADIUS authentication.
How do I configure a P2S connection? A P2S configuration requires quite a few specific steps. The following articles contain the steps to walk you through P2S configuration, and links to configure the VPN client devices:. FAQ for native Azure certificate authentication How many VPN client endpoints can I have in my Point-to-Site configuration? It depends on the gateway SKU.
For more information on the number of connections supported, see. What client operating systems can I use with Point-to-Site? The following client operating systems are supported:. Windows 7 (32-bit and 64-bit). Windows Server 2008 R2 (64-bit only). Windows 8.1 (32-bit and 64-bit). Windows Server 2012 (64-bit only).
Windows Server 2012 R2 (64-bit only). Windows Server 2016 (64-bit only). Windows 10. Mac OS X version 10.11 or above. Linux (StrongSwan). iOS.
Note Starting July 1, 2018, support is being removed for TLS 1.0 and 1.1 from Azure VPN Gateway. VPN Gateway will support only TLS 1.2. To maintain support, see the. Additionally, the following legacy algorithms will also be deprecated for TLS on July 1, 2018:. RC4 (Rivest Cipher 4).
DES (Data Encryption Algorithm). 3DES (Triple Data Encryption Algorithm). MD5 (Message Digest 5) How do I enable support for TLS 1.2 in Windows 7 and Windows 8.1?. Open a command prompt with elevated privileges by right-clicking on Command Prompt and selecting Run as administrator.
Run the following commands in the command prompt: reg add HKLM SYSTEM CurrentControlSet Services RasMan PPP EAP 13 /v TlsVersion /t REGDWORD /d 0xfc0 reg add 'HKLM SOFTWARE Microsoft Windows CurrentVersion Internet Settings WinHttp' /v DefaultSecureProtocols /t REGDWORD /d 0xaa0 if%PROCESSORARCHITECTURE% EQU AMD64 reg add 'HKLM SOFTWARE Wow6432Node Microsoft Windows CurrentVersion Internet Settings WinHttp' /v DefaultSecureProtocols /t REGDWORD /d 0xaa0. Install the following updates:. Reboot the computer. Connect to the VPN. Can I traverse proxies and firewalls using Point-to-Site capability? Azure supports two types of Point-to-site VPN options:. Secure Socket Tunneling Protocol (SSTP).
SSTP is a Microsoft proprietary SSL-based solution that can penetrate firewalls since most firewalls open the TCP port that 443 SSL uses. IKEv2 VPN is a standards-based IPsec VPN solution that uses UDP port 500 and 4500 and IP protocol no. Firewalls do not always open these ports, so there is a possibility of IKEv2 VPN not being able to traverse proxies and firewalls. If I restart a client computer configured for Point-to-Site, will the VPN automatically reconnect? By default, the client computer will not reestablish the VPN connection automatically.
Does Point-to-Site support auto-reconnect and DDNS on the VPN clients? Auto-reconnect and DDNS are currently not supported in Point-to-Site VPNs. Can I have Site-to-Site and Point-to-Site configurations coexist for the same virtual network?
For the Resource Manager deployment model, you must have a RouteBased VPN type for your gateway. For the classic deployment model, you need a dynamic gateway. We do not support Point-to-Site for static routing VPN gateways or PolicyBased VPN gateways. Can I configure a Point-to-Site client to connect to multiple virtual networks at the same time?
A Point-to-Site client can only connect to resources in the VNet in which the virtual network gateway resides. How much throughput can I expect through Site-to-Site or Point-to-Site connections? It's difficult to maintain the exact throughput of the VPN tunnels.
IPsec and SSTP are crypto-heavy VPN protocols. Throughput is also limited by the latency and bandwidth between your premises and the Internet. For a VPN Gateway with only IKEv2 Point-to-Site VPN connections, the total throughput that you can expect depends on the Gateway SKU. For more information on throughput, see. Can I use any software VPN client for Point-to-Site that supports SSTP and/or IKEv2? You can only use the native VPN client on Windows for SSTP, and the native VPN client on Mac for IKEv2.
Refer to the list of supported client operating systems. Does Azure support IKEv2 VPN with Windows? IKEv2 is supported on Windows 10 and Server 2016.
However, in order to use IKEv2, you must install updates and set a registry key value locally. OS versions prior to Windows 10 are not supported and can only use SSTP. To prepare Windows 10 or Server 2016 for IKEv2:. Install the update. OS version Date Number/Link Windows Server 2016 Windows 10 Version 1607 January 17, 2018 Windows 10 Version 1703 January 17, 2018. Set the registry key value.
Create or set “HKEYLOCALMACHINE SYSTEM CurrentControlSet Services RasMan IKEv2 DisableCertReqPayload” REGDWORD key in the registry to 1. What happens when I configure both SSTP and IKEv2 for P2S VPN connections?
When you configure both SSTP and IKEv2 in a mixed environment (consisting of Windows and Mac devices), the Windows VPN client will always try IKEv2 tunnel first, but will fall back to SSTP if the IKEv2 connection is not successful. MacOSX will only connect via IKEv2. Other than Windows and Mac, which other platforms does Azure support for P2S VPN? Azure supports Windows, Mac and Linux for P2S VPN. I already have an Azure VPN Gateway deployed.
![Certificate Certificate](/uploads/1/2/5/3/125365280/927893499.jpg)
Can I enable RADIUS and/or IKEv2 VPN on it? Yes, you can enable these new features on already deployed gateways using Powershell or the Azure portal, provided that the gateway SKU that you are using supports RADIUS and/or IKEv2.
For example, the VPN gateway Basic SKU does not support RADIUS or IKEv2. Can I use my own internal PKI root CA for Point-to-Site connectivity? Previously, only self-signed root certificates could be used.
You can still upload 20 root certificates. What tools can I use to create certificates? You can use your Enterprise PKI solution (your internal PKI), Azure PowerShell, MakeCert, and OpenSSL. Are there instructions for certificate settings and parameters?.
Internal PKI/Enterprise PKI solution: See the steps to. Azure PowerShell: See the article for steps. MakeCert: See the article for steps. OpenSSL:. When exporting certificates, be sure to convert the root certificate to Base64. For the client certificate:.
When creating the private key, specify the length as 4096. When creating the certificate, for the -extensions parameter, specify usrcert.
FAQ for RADIUS authentication How many VPN client endpoints can I have in my Point-to-Site configuration? It depends on the gateway SKU. For more information on the number of connections supported, see. What client operating systems can I use with Point-to-Site? The following client operating systems are supported:. Windows 7 (32-bit and 64-bit).
Windows Server 2008 R2 (64-bit only). Windows 8.1 (32-bit and 64-bit). Windows Server 2012 (64-bit only).
Windows Server 2012 R2 (64-bit only). Windows Server 2016 (64-bit only). Windows 10. Mac OS X version 10.11 or above. Linux (StrongSwan). iOS.
Note Starting July 1, 2018, support is being removed for TLS 1.0 and 1.1 from Azure VPN Gateway. VPN Gateway will support only TLS 1.2. To maintain support, see the.
Additionally, the following legacy algorithms will also be deprecated for TLS on July 1, 2018:. RC4 (Rivest Cipher 4). DES (Data Encryption Algorithm). 3DES (Triple Data Encryption Algorithm). MD5 (Message Digest 5) How do I enable support for TLS 1.2 in Windows 7 and Windows 8.1?.
Open a command prompt with elevated privileges by right-clicking on Command Prompt and selecting Run as administrator. Run the following commands in the command prompt: reg add HKLM SYSTEM CurrentControlSet Services RasMan PPP EAP 13 /v TlsVersion /t REGDWORD /d 0xfc0 reg add 'HKLM SOFTWARE Microsoft Windows CurrentVersion Internet Settings WinHttp' /v DefaultSecureProtocols /t REGDWORD /d 0xaa0 if%PROCESSORARCHITECTURE% EQU AMD64 reg add 'HKLM SOFTWARE Wow6432Node Microsoft Windows CurrentVersion Internet Settings WinHttp' /v DefaultSecureProtocols /t REGDWORD /d 0xaa0. Install the following updates:. Reboot the computer. Connect to the VPN. Can I traverse proxies and firewalls using Point-to-Site capability? Azure supports two types of Point-to-site VPN options:.
Secure Socket Tunneling Protocol (SSTP). SSTP is a Microsoft proprietary SSL-based solution that can penetrate firewalls since most firewalls open the TCP port that 443 SSL uses. IKEv2 VPN is a standards-based IPsec VPN solution that uses UDP port 500 and 4500 and IP protocol no. Firewalls do not always open these ports, so there is a possibility of IKEv2 VPN not being able to traverse proxies and firewalls. If I restart a client computer configured for Point-to-Site, will the VPN automatically reconnect? By default, the client computer will not reestablish the VPN connection automatically.
Does Point-to-Site support auto-reconnect and DDNS on the VPN clients? Auto-reconnect and DDNS are currently not supported in Point-to-Site VPNs.
Can I have Site-to-Site and Point-to-Site configurations coexist for the same virtual network? For the Resource Manager deployment model, you must have a RouteBased VPN type for your gateway. For the classic deployment model, you need a dynamic gateway. We do not support Point-to-Site for static routing VPN gateways or PolicyBased VPN gateways. Can I configure a Point-to-Site client to connect to multiple virtual networks at the same time? A Point-to-Site client can only connect to resources in the VNet in which the virtual network gateway resides. How much throughput can I expect through Site-to-Site or Point-to-Site connections?
It's difficult to maintain the exact throughput of the VPN tunnels. IPsec and SSTP are crypto-heavy VPN protocols. Throughput is also limited by the latency and bandwidth between your premises and the Internet. For a VPN Gateway with only IKEv2 Point-to-Site VPN connections, the total throughput that you can expect depends on the Gateway SKU. For more information on throughput, see. Can I use any software VPN client for Point-to-Site that supports SSTP and/or IKEv2? You can only use the native VPN client on Windows for SSTP, and the native VPN client on Mac for IKEv2.
Refer to the list of supported client operating systems. Does Azure support IKEv2 VPN with Windows?
IKEv2 is supported on Windows 10 and Server 2016. However, in order to use IKEv2, you must install updates and set a registry key value locally. OS versions prior to Windows 10 are not supported and can only use SSTP. To prepare Windows 10 or Server 2016 for IKEv2:. Install the update. OS version Date Number/Link Windows Server 2016 Windows 10 Version 1607 January 17, 2018 Windows 10 Version 1703 January 17, 2018.
Set the registry key value. Create or set “HKEYLOCALMACHINE SYSTEM CurrentControlSet Services RasMan IKEv2 DisableCertReqPayload” REGDWORD key in the registry to 1. What happens when I configure both SSTP and IKEv2 for P2S VPN connections? When you configure both SSTP and IKEv2 in a mixed environment (consisting of Windows and Mac devices), the Windows VPN client will always try IKEv2 tunnel first, but will fall back to SSTP if the IKEv2 connection is not successful. MacOSX will only connect via IKEv2. Other than Windows and Mac, which other platforms does Azure support for P2S VPN? Azure supports Windows, Mac and Linux for P2S VPN.
I already have an Azure VPN Gateway deployed. Can I enable RADIUS and/or IKEv2 VPN on it? Yes, you can enable these new features on already deployed gateways using Powershell or the Azure portal, provided that the gateway SKU that you are using supports RADIUS and/or IKEv2. For example, the VPN gateway Basic SKU does not support RADIUS or IKEv2.
Is RADIUS authentication supported on all Azure VPN Gateway SKUs? RADIUS authentication is supported for VpnGw1, VpnGw2, and VpnGw3 SKUs. If you are using legacy SKUs, RADIUS authentication is supported on Standard and High Performance SKUs. It is not supported on the Basic Gateway SKU. Is RADIUS authentication supported for the classic deployment model? RADIUS authentication is not supported for the classic deployment model.
Are 3rd-party RADIUS servers supported? Yes, 3rd-party RADIUS servers are supported. What are the connectivity requirements to ensure that the Azure gateway is able to reach an on-premises RADIUS server? A VPN Site-to-Site connection to the on-premises site, with the proper routes configured, is required. Can traffic to an on-premises RADIUS server (from the Azure VPN gateway) be routed over an ExpressRoute connection? It can only be routed over a Site-to-Site connection. Is there a change in the number of SSTP connections supported with RADIUS authentication?
What is the maximum number of SSTP and IKEv2 connections supported? There is no change in the maximum number of SSTP connections supported on a gateway with RADIUS authentication. It remains 128 for SSTP, but depends on the gateway SKU for IKEv2.
For more information on the number of connections supported, see. What is the difference between doing certificate authentication using a RADIUS server vs. Using Azure native certificate authentication (by uploading a trusted certificate to Azure). In RADIUS certificate authentication, the authentication request is forwarded to a RADIUS server that handles the actual certificate validation. This option is useful if you want to integrate with a certificate authentication infrastructure that you already have through RADIUS. When using Azure for certificate authentication, the Azure VPN gateway performs the validation of the certificate.
You need to upload your certificate public key to the gateway. You can also specify list of revoked certificates that shouldn’t be allowed to connect. Does RADIUS authentication work with both IKEv2, and SSTP VPN? Yes, RADIUS authentication is supported for both IKEv2, and SSTP VPN. Next Steps.
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User accounts and groups The first step for an SSL VPN tunnel is to add the users and user groups that will access the tunnel. You may already have users defined for other authentication-based security policies. The user group is associated with the web portal that the user sees after logging in. You can use one policy for multiple groups, or multiple policies to handle differences between the groups such as access to different services, or different schedules. To create a user account:. In the web-based manager, go to User & Device User Definition, and select Create New. In the CLI, use the commands in config user local.
All users accessing the SSL tunnel must be in a firewall user group. User names can be up to 64 characters long. To create user groups:. In the web-based manager, go to User & Device User Groups and select Create New.
In the CLI, use the commands in config user group. Guest group and SSO group have been removed from config user group and config vpn ssl web user-group-bookmark. Authentication Remote users must be authenticated before they can request services and/or access network resources through the web portal. The authentication process can use a password defined on the FortiGate unit or optionally use established external authentication mechanisms such as RADIUS or LDAP. To authenticate users, you can use a plain text password on the local FortiGate unit, forward authentication requests to an external RADIUS, LDAP or TACACS+ server, or utilize PKI certificates. For information about how to create RADIUS, LDAP, TACACS+ or PKI user accounts and certificates, see the. FortiOS supports LDAP password renewal notification and updates through SSL VPN.
Configuration is enabled using the CLI commands: config user ldap edit set server set password-expiry-warning enable set password-renewal enable next end For more information, see the. MAC host check When a remote client attempts to log in to the portal, you can have the FortiGate unit check against the client’s MAC address to ensure that only a specific computer or device is connecting to the tunnel. This can ensure better security should a password be compromised. MAC addresses can be tied to specific portals and can be either the entire MAC address or a subset of the address. MAC host checking is configured in the CLI using the folowing commands: conf vpn ssl web portal edit portal set mac-addr-check enable set mac-addr-action allow config mac-addr-check-rule edit 'rule1' set mac-addr-list 01:01:01:01:01:01 08:00:27:d4:06:5d set mac-addr-mask 48 end end IP addresses for users After the FortiGate unit authenticates a request for a tunnel-mode connection, the FortiGate unit assigns the SSL VPN client an IP address for the session. The address is assigned from an IP Pool, which is a firewall address defining an IP address range. Take care to prevent overlapping IP addresses.
Do not assign to clients any IP addresses that are already in use on the private network. As a precaution, consider assigning IP addresses from a network that is not commonly used (for example, 10.254.254.0/24). To set tunnel-mode client IP address range - web-based manager:.
Go to Policy & Objects Addressesand select Create New. Enter an Name, for example, SSLVPNtunnelrange. Select a Type of IP Range. In the Subnet/IP Range field, enter the starting and ending IP addresses that you want to assign to SSL VPN clients, for example 10.254.254.80-100.
In Interface, select Any. To set tunnel-mode client IP address range - CLI: If your SSL VPN tunnel range is for example 10.254.254.80 - 10.254.254.100, you could enter config firewall address edit SSLtunnelusers set type iprange set end-ip 10.254.254.100 set start-ip 10.254.254.80 end Authentication of remote users When remote users connect to the SSL VPN tunnel, they must perform authentication before being able to use the internal network resources. This can be as simple as assigning users with their own passwords, connecting to an LDAP server or using more secure options. FortiOS provides a number of options for authentication as well as security option for those connected users.
The web portal can include bookmarks to connect to internal network resources. A web (HTTP/HTTPS) bookmark can include login credentials so that the FortiGate unit automatically logs the user into the website. This means that the user logs into the SSL VPN and then does not have to enter any more credentials to visit preconfigured web sites. Both the administrator and the end user can configure bookmarks, including SSO bookmarks.
To add bookmarks as a web portal user, see. Setting the client authentication timeout The client authentication timeout controls how long an authenticated user will remain connected. When this time expires, the system forces the remote client to authenticate again. As with the idle timeout, a shorter period of time is more secure. The default value is 28800 seconds (8 hours). You can only modify this timeout value in the CLI.
For example, to change the authentication timeout to 18 000 seconds, enter the following commands in the CLI: config vpn ssl settings set auth-timeout 18000 end You can also set the idle timeout for the client, to define how long the user does not access the remote resources before they are logged out. Additional timeout settings SSL VPN timeout settings are also available to counter 'Slowloris' and 'R-U-Dead-Yet' vulnerabilities that allow remote attackers to cause a denial of service via partial HTTP requests.
The FortiGate solution involves two attributes ( http-request-header-timeout and http-request-body-timeout). CLI syntax config vpn ssl settings set http-request-header-timeout 1-60 (seconds) set http-request-body-timeout 1-60 (seconds) end Allow one-time login per user You can set the SSL VPN tunnel such that each user can only log into the tunnel one time concurrently per user per login. That is, once logged into the portal, they cannot go to another system and log in with the same credentials again. To allow one-time login per user - web-based manager: Go to VPN SSL-VPN Portals, select a portal, and enable Limit Users to One SSL-VPN Connection at a Time. It is disabled by default. To allow one-time login per user - CLI: config vpn ssl web portal edit set limit-user-logins enable end Strong authentication with security certificates The FortiGate unit supports strong (two-factor) authentication through X.509 security certificates (version 1 or 3).
The FortiGate unit can require clients to authenticate using a certificate, and the client can require the FortiGate unit to authenticate using a certificate. For information about obtaining and installing certificates, see the.
You can select the Require Client Certificate option so that clients must authenticate using certificates. The client browser must have a local certificate installed, and the FortiGate unit must have the corresponding CA certificate installed. When the remote client initiates a connection, the FortiGate unit prompts the client browser for its client-side certificate as part of the authentication process. To require client authentication by security certificates - web-based manager:. Go to VPN SSL-VPN Settings.
Select Require Client Certificate. Select Apply. To require client authentication by security certificates - CLI: config vpn ssl settings set reqclientcert enable end If your SSL VPN clients require strong authentication, the FortiGate unit must offer a CA certificate that the client browser has installed. In the FortiGate unit SSL VPN settings, you can select which certificate the FortiGate offers to authenticate itself. By default, the FortiGate unit offers its factory installed (FortinetCASSLProxy) certificate from Fortinet to remote clients when they connect. If you leave the default setting, a warning appears that recommends you purchase a certificate for your domain and upload it for use. To enable FortiGate unit authentication by certificate - web-based manager:.
Go to VPN SSL-VPN Settings. From the Server Certificate list, select the certificate that the FortiGate unit uses to identify itself to SSL VPN clients. Select Apply.
To enable FortiGate unit authentication by certificate - CLI: For example, to use the examplecert certificate config vpn ssl settings set servercert examplecert end FortiOS will check the server certificate to verify that the certificate is valid. Only valid server certificates should be used.
NSA Suite B cryptography support FortiOS supports the use of ECDSA Local Certificates for SSL VPN Suite B. The National Security Agency (NSA) developed Suite B algorithms in 2005 to serve as a cryptographic base for both classified and unclassified information at an interoperable level. FortiOS allows you to import, generate, and use ECDSA certificates defined by the Suite B cryptography set. To generate ECDSA certificates, use the following command in the CLI: exec vpn certificate local generate ec.