GRE OVER IPSEC

[birka]

hi
i try to configure GRE over ipsec tunnel ,i configured the GRE tunnel and it works 
but when i try add ipsec over the GRE i notice that i can't choose port (GRE - tcp 47) in the phase 2 configuration

someone knows if it is possible to configure GRE over IPSEC ?
maybe someone try this and success ?

thanks
izik

[cmb]

You just create a transport mode IPsec connection specifying the same local and remote IP as the GRE, then your GRE is automatically within the IPsec transport.