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 <-- IP Address of the FortiAP

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 "" <-- IP Address of the outgoing (IPsec)interface

VXLAN: L2 Traffic zwischen Standorten übertragen

Ein Subnetz, zwei Standorte. Dies ist auf dem FortiGate seit Version 5.4 auch ohne NAT möglich. Zur Verwendung kommt dazu ein Protokoll, welches es ermöglicht, Layer 2 Traffic über Layer 3 Netzwerke zu senden. Dieses Protokoll heisst Virtual eXtensible Local Area Network (VXLAN) und wurde im RFC 7348 zum Standard definiert. Zur Anwendung kommt dieses vor allem in Infrastrukturen grosser Provider oder in virtuellen Infrastrukturen, um Netzwerke an unterschiedlichen Standorten verfügbar zu machen.

„VXLAN: L2 Traffic zwischen Standorten übertragen“ weiterlesen