diff --git a/buildvm.sh b/buildvm.sh
index 9f12259..75436e1 100644
--- a/buildvm.sh
+++ b/buildvm.sh
@@ -80,5 +80,6 @@ if [ ! -f "/etc/iptables/rules.v4" ]; then
     touch /etc/iptables/rules.v4
 fi
 iptables-save > /etc/iptables/rules.v4
+service netfilter-persistent restart
 echo "$vm_num $user $password $core $memory $disk $sshn $web1_port $web2_port $port_first $port_last $system" >> "vm${vm_num}"
 cat "vm${vm_num}"