Dont listen for remote VNC/SSH connections in kvm.

libexec/start-target

@@ -5,7 +5,7 @@
 ARCH=qemu$1
 SUFFIX=$2
 
-kvm -cpu $ARCH -m ${VMEM:-2000} -smp ${NPROCS:-2} -drive file=target-$SUFFIX.qcow2 -net nic,model=virtio -net user,hostfwd=tcp::$VM_SSH_PORT-:22 -vnc :16 > var/target.log 2>&1 &
+kvm -cpu $ARCH -m ${VMEM:-2000} -smp ${NPROCS:-2} -drive file=target-$SUFFIX.qcow2 -net nic,model=virtio -net user,hostfwd=tcp:127.0.0.1:$VM_SSH_PORT-:22 -vnc 127.0.0.1:16 > var/target.log 2>&1 &
 
 echo $! > var/target.pid
 wait