Quick and easy way to enable VNC remote access for your FreeBSD Desktop (with no password, careful).
pkg install -y tigervnc-server
cat << EOF >/usr/local/etc/X11/xorg.conf.d/vnc.conf
Section "Module"
Load "vnc"
EndSection
Section "Screen"
Identifier "Screen0"
Option "SecurityTypes" "None"
EndSection
EOF
reboot