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If the built-in Fortinet_Factory certificate and Fortinet_CA CA certificate are used for authentication, the peer user must be configured based on Fortinet_CA:Ĭonfig user peer edit “peer1” set ca “Fortinet_CA”Ĭonfig user peer edit “peer2” set ca “Fortinet_CA”Ĭonfig vpn ipsec phase1-interface edit “to_HQ2” set interface “port1” set authmethod signature net-device enable.If not using the built-in Fortinet_Factory certificate and Fortinet_CA CA certificate, do the following: Configure HQ1:Ĭonfig user peer edit “peer1” set ca “CA_Cert_1”Ĭonfig user peer edit “peer2” set ca “CA_Cert_1”.The peer user is used in the IPsec VPN tunnel peer setting to authenticate the remote peer FortiGate. If the built-in Fortinet_Factory certificate and the Fortinet_CA CA certificate are used for authentication, you can skip this step:Ĭonfig vpn certificate local edit “test1” …Ĭonfig vpn certificate ca edit “CA_Cert_1” …Ĭonfig vpn certificate local edit “test2” … The certificate and its CA certificate must be imported on the remote peer FortiGate and on the primary FortiGate before configuring IPsec VPN tunnels. Configure the import certificate and its CA certificate information.Traffic from this interface routes out the IPsec VPN tunnel: Configure HQ1:Ĭonfig system interface edit “dmz” set vdom “root”Ĭonfig system interface edit “port9” set vdom “root” The internal interface connects to the corporate internal network. Configure the internal (protected subnet) interface.Configure HQ1:Ĭonfig system interface edit “port1” set vdom “root”Ĭonfig system interface edit “port25” set vdom “root”Ĭonfig router static edit 1 set gateway 172.16.202.2 set device “port25” The IPsec tunnel is established over the WAN interface: a. The WAN interface is the interface connected to the ISP. Configure the WAN interface and default route.To configure IPsec VPN authenticating a remote FortiGate peer with a pre-shared key using the FortiOS CLI: Configure the Remote Subnets as 10.1.100.0. Configure the Remote Subnets as 172.16.101.0. Configure the Local Subnets as 1.100.0.From the Local Interface dropdown menu, select the proper local interface.Configure the following settings for Policy & Routing:.From the PeerCertificate CA dropdown list, select the desired peer CA certificate.In the Certificate name field, select the imported certificate.For Authentication Method, select Signature.
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Configure the following settings for Authentication:.For NAT Configuration, select No NAT Between Sites. For Remote Device Type, select FortiGate. For Template Type, choose Site to Site.In FortiOS, go to VPN > IPsec Wizard and configure the following settings for VPN Setup:.To configure IPsec VPN authenticating a remote FortiGate peer with a pre-shared key on the FortiOS GUI: You can configure IPsec VPN authenticating a remote FortiGate peer with a pre-shared key using the FortiOSGUI or CLI. The following shows the sample network topology for this recipe: The certificate on one peer is validated by the presence of the CA certificate installed on the other peer. This recipe provides sample configuration of IPsec VPN authenticating a remote FortiGate peer with a certificate. IPsec VPN authenticating a remote FortiGate peer with a certificate