![]() For information about obtainingĪnd loading the required server certificate, see the FortiOS User Authentication guide. If you selected RSA Signature, select the name of the server certificate that the FortiGate unit will use to authenticate itself to the remote peer or dialup client during Phase 1 negotiations. For optimum protection against currently known attacks, the key must consist of a minimum of 16 randomly chosen alphanumeric characters. The key must contain at least 6 printable characters. You must define the same key at the remote peer or client. If you selected Pre-shared Key, enter the pre-shared key that the FortiGate unit will use to authenticate itself to the remote peer or dialup client during Phase 1 negotiations. When the remote VPN peer has a dynamic IP address and is authenticated by a certificate, you must select Aggressive mode if there is more than one Phase 1 configuration for the interface IP address and these Phase 1 configurations use different proposals. When the remote VPN peer has a dynamic IP address and is authenticated by a pre-shared key, you must select Aggressive mode if there is more than one dialup phase1 configuration for the interface IP address. ![]() Main mode - the Phase 1 parameters are exchanged in multiple rounds with encrypted authentication information.Īggressive mode - the Phase 1 parameters are exchanged in single message with authentication information that is not encrypted. Select the name of the interface through which remote peers or dialup clients connect to the FortiGate unit.īy default, the local VPN gateway IP address is the IP address of the interface that you selected. This option is available in NAT mode only. If you selected Dynamic DNS, enter the domain name of the remote peer. ![]() If you selected Static IP Address, enter the IP address of the remote peer. Static IP Address - If the remote peer has a static IP address.ĭialup User - If one or more FortiClient or FortiGate dialup clients with dynamic IP addresses will connect to the FortiGate unit.ĭynamic DNS - If a remote peer that has a domain name and subscribes to a dynamic DNS service will connect to the FortiGate unit. Select the category of the remote connection: For a route-based tunnel, the FortiGate unit also uses the name for the virtual IPsec interface that it creates automatically. If Remote Gateway is Dialup User, the maximum name length is further reduced depending on the number of dialup tunnels that can be established: by 2 for up to 9 tunnels, by 3 for up to 99 tunnels, 4 for up to 999 tunnels, and so on.įor a tunnel mode VPN, the name normally reflects where the remote connection originates. The maximum name length is 15 characters for an interface mode VPN, 35 characters for a policy-based VPN. If you want to control how the IKE negotiation is processed when there is no traffic, as well as the length of time the FortiGate unit waits for negotiations to occur, you can use the negotiation-timeout and autonegotiate commands in the CLI.įor more information, refer to Phase 2 parameters on page 72 and Phase 2 parameters on page 72. The local end is the FortiGate interface that sends and receives IPsec packets. The remote end is the remote gateway with which the FortiGate unit exchanges IPsec packets. The Phase 1 configuration mainly defines the ends of the IPsec tunnel. Enter a unique descriptive name for the VPN tunnel and follow the instructions in the VPN Creation Wizard. To begin defining the Phase 1 configuration, go to VPN > IPsec Tunnels and select Create New. This chapter contains the following sections: Interface mode, supported in NAT mode only, creates a virtual interface for the local end of a VPN tunnel. ![]() Internet Key Exchange (IKE) is performed automatically based on pre-shared keys or X.509 digital certificates. The FortiGate unit implements the Encapsulated Security Payload (ESP) protocol. See Defining VPN security policies on page 1. Policy-based VPNs have an action of IPSEC, where for interface-based VPNs the security policy action is ACCEPT. Create a security policy to permit communication between your private network and the VPN.See IPsec VPN in the webbased manager on page 38. Define Phase 2 parameters to create a VPN tunnel with a remote peer or dialup client.See IPsec VPN in the web-based manager on page 38. Define Phase 1 parameters to authenticate remote peers and clients for a secure connection.If a remote VPN peer or client requires a specific IPsec encryption or authentication key, you must configure your FortiGate unit to use manual keys instead. With these steps, your FortiGate unit will automatically generate unique IPsec encryption and authentication keys. To configure an IPsec VPN, use the general procedure below. ![]()
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