By browsing to the Snap Store, you'll be able to find our own snap Kerberos Agent. You can either install the Kerberos Agent through the command line.
snap install kerberosio
Or use the Desktop client to have a visual interface.
Once installed you can find your Kerberos Agent configration at /var/snap/kerberosio/common. Run the Kerberos Agent as following.
sudo kerberosio.agent -action=run -port=80
If successfull you'll be able to browse to port 80 or if you defined a different port. This will open the Kerberos Agent interface.