Configuring Kerberos authentication with your FortiProxy can be a good way improving identity security within your infrastructure. As Kerberos is considerdered more secure method of authentication vs say NTLM. As a result of working with a customer who wanted to enable Kerberos authentication I wanted to share the process here. Assumptions: You have a FortiProxy running version 7.6.x - this may work with earlier versions, however this is the version I used in this artlice You

STP interoprability can be a pain in the neck, we hope to shed some light on making this a little easier.