diff --git a/buildvm.sh b/buildvm.sh
index 12a1afc..9f12259 100644
--- a/buildvm.sh
+++ b/buildvm.sh
@@ -71,22 +71,14 @@ qm set $vm_num --cipassword $password --ciuser $user
 qm resize $vm_num scsi0 ${disk}G
 qm start $vm_num
 
-if grep -q "^net.ipv4.ip_forward=1" /etc/sysctl.conf; then
-  if grep -q "^#net.ipv4.ip_forward=1" /etc/sysctl.conf; then
-    sed -i 's/^#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/' /etc/sysctl.conf
-  fi
-else
-  echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf
-fi
-sysctl -p
 iptables -t nat -A PREROUTING -p tcp --dport ${sshn} -j DNAT --to-destination ${user_ip}:22
 iptables -t nat -A PREROUTING -p tcp -m tcp --dport ${web1_port} -j DNAT --to-destination ${user_ip}:80
 iptables -t nat -A PREROUTING -p tcp -m tcp --dport ${web2_port} -j DNAT --to-destination ${user_ip}:443
-# iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport ${sshn} -j DNAT --to-destination ${user_ip}:22
-# iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport ${web1_port} -j DNAT --to-destination ${user_ip}:80
-# iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport ${web2_port} -j DNAT --to-destination ${user_ip}:443
-# iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport ${port_first}:${port_last} -j DNAT --to-destination ${user_ip}:${port_first}-${port_last}
-# iptables -t nat -A PREROUTING -i eth0 -p udp -m udp --dport ${port_first}:${port_last} -j DNAT --to-destination ${user_ip}:${port_first}-${port_last}
+iptables -t nat -A PREROUTING -p tcp -m tcp --dport ${port_first}:${port_last} -j DNAT --to-destination ${user_ip}:${port_first}-${port_last}
+iptables -t nat -A PREROUTING -p udp -m udp --dport ${port_first}:${port_last} -j DNAT --to-destination ${user_ip}:${port_first}-${port_last}
+if [ ! -f "/etc/iptables/rules.v4" ]; then
+    touch /etc/iptables/rules.v4
+fi
 iptables-save > /etc/iptables/rules.v4
 echo "$vm_num $user $password $core $memory $disk $sshn $web1_port $web2_port $port_first $port_last $system" >> "vm${vm_num}"
 cat "vm${vm_num}"