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Administration Guide

SSL VPN to dial-up VPN migration

SSL VPN to dial-up VPN migration

FortiOS 7.6.0 and later does not support the SSL VPN web and tunnel mode feature on some FortiGate models:

FortiGate models

Supports SSL VPN?

FortiOS upgrade impact on SSL VPN configuration

FortiGate models with 2GB of RAM or less

No Deleted during upgrade to FortiOS 7.6.0 or later

FortiGate models with more than 2GB of RAM

Yes Retained after upgrade to FortiOS 7.6.0 or later

See the FortiOS 7.6 Release Notes for information about affected models.

You may want to use IPsec VPN instead of SSL VPN. Depending on your needs and FortiGate model, you may want to migrate the VPN configuration before or after upgrade to FortiOS 7.6.0:

The migration guide covers:

  • Background information, such as a security comparison between SSL VPN and IPsec VPN, the differences between IKEv1 and IKEv2, and information about TLS protocol for tunneling.

  • Design differences between SSL VPN and IPsec VPN to consider, such as authentication methods, user groups, full tunneling versus split tunneling, client address assignments, policy configurations, FortiClient or endpoint configurations, and whether to migrate VPNs before or after FortiOS upgrade.

  • Instructions for configuring IPsec tunnels using the FortiOS IPsec wizard.

  • Instructions for migrating FortiClient endpoint configurations.

SSL VPN to dial-up VPN migration

SSL VPN to dial-up VPN migration

FortiOS 7.6.0 and later does not support the SSL VPN web and tunnel mode feature on some FortiGate models:

FortiGate models

Supports SSL VPN?

FortiOS upgrade impact on SSL VPN configuration

FortiGate models with 2GB of RAM or less

No Deleted during upgrade to FortiOS 7.6.0 or later

FortiGate models with more than 2GB of RAM

Yes Retained after upgrade to FortiOS 7.6.0 or later

See the FortiOS 7.6 Release Notes for information about affected models.

You may want to use IPsec VPN instead of SSL VPN. Depending on your needs and FortiGate model, you may want to migrate the VPN configuration before or after upgrade to FortiOS 7.6.0:

The migration guide covers:

  • Background information, such as a security comparison between SSL VPN and IPsec VPN, the differences between IKEv1 and IKEv2, and information about TLS protocol for tunneling.

  • Design differences between SSL VPN and IPsec VPN to consider, such as authentication methods, user groups, full tunneling versus split tunneling, client address assignments, policy configurations, FortiClient or endpoint configurations, and whether to migrate VPNs before or after FortiOS upgrade.

  • Instructions for configuring IPsec tunnels using the FortiOS IPsec wizard.

  • Instructions for migrating FortiClient endpoint configurations.