*******************************************************************************
* This port contains a prebuilt kernel module. Due to the ever changing       *
* nature of FreeBSD it may be necessary to rebuild the module after a kernel  *
* source update.  To do this reinstall the port.                              *
*******************************************************************************

Also you may set for example

scprotect_enable="YES"
scprotect_progs="sshd named"

to protect those application even if they are restarted