FortiClient VPN 6.2

Mit dem Release von FortiClient 6.2 wurde der bisherige Full Featured FortiClient lizenzpflichtig und setzt einen FortiClient EMS Server voraus. Im Gegenzug hat Fortinet einen separaten VPN-only Client veröffentlicht. Fortinet beschreibt den FortiClient VPN folgendermassen:

For FortiGate administrators, a free version of FortiClient VPN is available which supports basic IPsec and SSL VPN and does not require registration with EMS. This version does not include central management, technical support, or some advanced features.

Basic IPsec and SSL VPN bedeutet in diesem Zusammenhang, dass folgende Features nicht enthalten sind:

  • IKEv2 support
  • VPN auto-connect/always-up
  • on-net/off-net
  • host check features
  • Central management

Ebenfalls gibt es für die Version 6.2 kein FortiClient Configuration Tool . Um benutzerdefinierte Installationspakete zu erstellen, wird zwingend ein FortiClient EMS Server benötigt.

Der FortiClient VPN ist unter https://www.forticlient.com/downloads erhältlich. Weitere Informationen dazu gibt es im KB Limitation and features on Forticlient.

FortiOS 6.2: Upgrade Notes

As with every software product, even the latest and greatest releases have some known glitches. That’s one of the reasons why you should review the release notes as part of the upgrade process.

But even then you might face a not-yet-documented issue. You’ll find some notable examples below.

FortiAPs won’t connect anymore (6.2.1)

Some customers have reported, that their FortiAPs won’t connect anymore after upgrading to FortiOS 6.2.1. Fortinet has confirmed that this is a know issue only when using trusted hosts to restrict the administrative access to the FortiGate.

The official workaround is to add the FortiAP’s IP or subnet as an additional trusted host entry on one of the admin users:

config system admin 
   edit "adminuser"
     set trusthostx 10.33.33.3 255.255.255.255 <-- IP Address of the FortiAP
   next
 end

RADIUS Server behind VPN-Tunnel not working (6.2.1)

When using a RADIUS server behind an IPsec-tunnel, you most likely had to configure the source-ip in the radius configuration (normally to the internal address of the firewall). A bug in FortiOS 6.2.1 prevents this from working. As a workaround you’ll have to use an ip address owned by the outgoing interface.

config user radius
  edit "nps-server"
    set source-ip "192.168.101.99" <-- IP Address of the outgoing (IPsec)interface
  next
end 

FortiGate SSLVPN Update-Empfehlung

Auf dem FortiGate wurden einige Schwachstellen im SSLVPN Portal bekannt. Diese reichen von Weiterleitungen durch Cross-Site-Scripts (XSS) bis hin zum Download Systemdateien und das Zurücksetzen von Benutzerkennwörtern.

FortiGate SSL VPN web portal login redir XSS vulnerability (FG-IR-17-242, CVE-2017-14186)
Unauthenticated SSL VPN users password modification (FG-IR-18-389, CVE-2018-13382)
FortiOS system file leak through SSL VPN via specially crafted HTTP resource requests (FG-IR-18-384, CVE-2018-13379)

„FortiGate SSLVPN Update-Empfehlung“ weiterlesen