Dailup IPSec VPN forticlient can't ping each other

[itsyourmama]

Hi,

We are using dailup IPSec VPN forticlient by using XAuth authentication connects to our Fortigate firewall. When they connected, they can't ping/rdp to each other, is this normal? The address pool was assigned by Fortigate VPN setting "Client Address Range" itself, see attached screenshot. 

Thank you

[itsyourmama]

anyone knows why?