diff --git a/libvirt/qemu b/libvirt/qemu
index 25e458b..8fb3979 100755
--- a/libvirt/qemu
+++ b/libvirt/qemu
@@ -4,29 +4,29 @@
 #sudo ln -sf "$(pwd)"/qemu /etc/libvirt/hooks/qemu
 
 ## IOMMU groups
-IOMMU_GPU="06:00.0"
-IOMMU_GPU_AUDIO="06:00.1"
-IOMMU_USB="07:00.3"
-IOMMU_AUDIO="08:00.3"
+#IOMMU_GPU="06:00.0"
+#IOMMU_GPU_AUDIO="06:00.1"
+#IOMMU_USB="07:00.3"
+#IOMMU_AUDIO="08:00.3"
 
 ## Virsh devices
 VIRSH_GPU="pci_0000_06_00_0"
 VIRSH_GPU_AUDIO="pci_0000_06_00_1"
 VIRSH_USB="pci_0000_07_00_3"
-VIRSH_AUDIO="pci_0000_08_00_3"
+#VIRSH_AUDIO="pci_0000_08_00_3"
 
 ## PCI BUS ID
-videoid="10de 1184"
-audioid="10de 0e0a"
-videobusid="0000:${IOMMU_GPU}"
-audiobusid="0000:${IOMMU_GPU_AUDIO}"
+#videoid="10de 1184"
+#audioid="10de 0e0a"
+#videobusid="0000:${IOMMU_GPU}"
+#audiobusid="0000:${IOMMU_GPU_AUDIO}"
 
 ## QEMU options
-RAM=12G
+#RAM=12G
 
 ## Ulimit
-ULIMIT=$(ulimit -a | grep "max locked memory" | awk '{print $6}')
-ULIMIT_TARGET=$(( $(echo $RAM | tr -d 'G') * 1048576 + 100000 ))
+#ULIMIT=$(ulimit -a | grep "max locked memory" | awk '{print $6}')
+#ULIMIT_TARGET=$(( $(echo $RAM | tr -d 'G') * 1048576 + 100000 ))
 
 ## Log file
 LOG=/tmp/qemu_log.txt
@@ -62,6 +62,14 @@ if [[ "$1" == "GPU"* ]]; then
 		## Memory lock limit
 		#[ "$ULIMIT" != "$ULIMIT_TARGET" ] && ulimit -l "$ULIMIT_TARGET"
 
+		## Firewall nftables
+		nft add rule inet filter INPUT iifname "virbr1" tcp dport { 53, 67, 68, 139, 445 \} counter accept
+		nft add rule inet filter INPUT iifname "virbr1" udp dport { 53, 67, 68 \} counter accept
+		nft add rule arp filter INPUT iifname "virbr1" accept
+
+		## Volume
+		amixer -q sset Master 100%
+
 		## Kill the Window Manager
 		killall i3 > /dev/null 2>&1
 		sleep 5 ## Just in case
@@ -88,18 +96,19 @@ if [[ "$1" == "GPU"* ]]; then
 		samba_server start
 
     ## iptables
-    iptables -A LIBVIRT_INP -i virbr1 -p tcp -m tcp --dport 445 -j ACCEPT
+    #iptables -A LIBVIRT_INP -i virbr1 -p tcp -m tcp --dport 445 -j ACCEPT
 
 	fi
+
 	if [ "$2" == "release" ]; then
 
     ## iptables
     #iptables -D LIBVIRT_INP -i virbr1 -p tcp -m tcp --dport 445 -j ACCEPT
 
     ## Stop the samba server
-		samba_server stop
+		#samba_server stop
 
-    ## Stop the network
+	  ## Stop the network
 		if [ "$(virsh net-list --all | grep "$VIRTNAME" | awk '{print $2}')" == "active" ]; then
 			virsh net-destroy "$VIRTNAME"
 		fi