Delete 2 lines (src in webgui_clients_list,) containing webgui clients sources for https & ssh
cd $FWDIR/conf
vi initial_module.pf
Delete 2 lines (src in webgui_clients_list,) containing webgui clients sources for https & ssh
vi initial_management.pf
Then you have to compile the new inital policy:
cd $FWDIR/bin
./comp_init_policy -g