diff --git a/README.md b/README.md
index 3f54261..040cb7b 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,24 @@ For OpenBSD images with cloud-init support, this project uses: [hcartiaux's open
 1. Configure the [variables](env_scripts/common.sh) file (`env_scripts/common.sh`).  
    It is recommended to place this directory in your home folder to avoid libvirt permission issues.
 
-2. Run the installation script: install.sh
+2. Run the installation script: `install.sh`
+
+## Networking
+
+Two networks are installed when you run `install.sh`:
+
+| Name  | Type     |DCHP Range   |Default route   |Host device   |  
+| ----- | -------- |-------------|----------------|--------------|
+| vmnetwork | NAT  |192.168.100.100 - 254| 192.168.100.1| virb1|
+| host-only | Isolated Network  |-|-| -|
+
+**Table 1:** Default Available Networks
+
+You can network names changing on [env_scripts/common.sh](env_scripts/common.sh)  
+```
+VM_NETWORK_HOSTONLY="host-only"
+VM_USERNAME="user"
+```
 
 ### AppArmor exception (if needed) 
 
diff --git a/env_scripts/common.sh b/env_scripts/common.sh
index 28d57b1..51a701d 100644
--- a/env_scripts/common.sh
+++ b/env_scripts/common.sh
@@ -1,19 +1,22 @@
 #!/bin/env bash
 DISTRO=""
-LIBVIRT_NET_MODEL="virtio"
-LIBVIRT_NET_OPTION="network=$VM_NETWORK,model=$LIBVIRT_NET_MODEL"
-OS_JSON_FILE="files/os_options.json"
-OS_JSON_FILE_INSTALL="files/software.json"
+
 #VM_BASE_DIR=${VM_BASE_DIR:-"${HOME}/.local/share/libvirt"}
 #VM_BASE_DIR=${VM_BASE_DIR:-"${HOME}/var/lib/libvirt"}
 VM_BASE_DIR="${HOME}/vms"
 VM_BASE_IMAGES="base"
 VM_DISK_EXTENSION="img"
+VM_NETWORK_NAT="vmnetwork"
+VM_NETWORK_HOSTONLY="host-only"
+VM_NETWORK_TYPE="nat"
 VM_USERNAME="user"
 VM_SOFT="";
-
 VM_IMAGE_PATH="${VM_BASE_DIR}/images/$1.img"
 CI_IMAGE_PATH="${VM_BASE_DIR}/images/$1-cidata.iso"
-VM_NETWORK="vmnetwork"
-REPO_BRANCH="main"
-REPO_SOURCE="https://raw.githubusercontent.com/vgenguita/kvm-cloudimage/refs/heads/${REPO_BRANCH}/env_scripts/"
+LIBVIRT_NET_MODEL="virtio"
+LIBVIRT_NET_OPTION="network=${VM_NETWORK_NAT},model=${LIBVIRT_NET_MODEL}"
+OS_JSON_FILE="files/os_options.json"
+OS_JSON_FILE_INSTALL="files/software.json"
+
+# REPO_BRANCH="main"
+# REPO_SOURCE="https://raw.githubusercontent.com/vgenguita/kvm-cloudimage/refs/heads/${REPO_BRANCH}/env_scripts/"
diff --git a/env_scripts/functions.sh b/env_scripts/functions.sh
index 236e933..9a6fc85 100644
--- a/env_scripts/functions.sh
+++ b/env_scripts/functions.sh
@@ -293,10 +293,12 @@ vm_net_bridge_set_ip()
     ssh -i ${VM_BASE_DIR}/ssh/${VM} -l${VM_USERNAME} ${CURRENT_IP} "bash -s" -- < ../vm_example_scripts/apply_netplan.sh
 }
 
-vm_net_set_bridge_mode()
+vm_net_set_network_type()
 {
-    if [[ -n $VM_BRIDGE_INT ]]; then
-            LIBVIRT_NET_OPTION="model=virtio,bridge=${VM_BRIDGE_INT}"
+    if [[ "${VM_NETWORK_TYPE}" ==  "isolated" ]]; then
+        LIBVIRT_NET_OPTION="network=${VM_NETWORK_HOST_ONLY},model=${LIBVIRT_NET_MODEL}"
+    elif [[ "${VM_NETWORK_TYPE}" ==  "bridge" ]]; then
+        LIBVIRT_NET_OPTION="model=virtio,bridge=${VM_BRIDGE_INT}"
     fi
 }
 ## Connect to an existent VM using ssh
diff --git a/files/network-host-only.xml b/files/network-host-only.xml
new file mode 100644
index 0000000..8c47861
--- /dev/null
+++ b/files/network-host-only.xml
@@ -0,0 +1,5 @@
+<network>
+  <name>YOURNAME</name>
+  <bridge name='YOURNAME' stp='on' delay='0'/>
+  <!-- <domain name='hostonly.local'/> -->
+</network>
diff --git a/files/network.xml b/files/network-nat.xml
similarity index 100%
rename from files/network.xml
rename to files/network-nat.xml
diff --git a/install.sh b/install.sh
index c6b5dba..2f3671c 100755
--- a/install.sh
+++ b/install.sh
@@ -29,9 +29,16 @@ sudo systemctl enable libvirtd
 sudo systemctl start libvirtd
 
 mkdir -p "${VM_BASE_DIR}"/{images,xml,init,base,ssh}
-cp files/network.xml ${VM_BASE_DIR}/xml/network.xml
-sed -i "s/YOURNETWORK/${VM_NETWORK}/g" ${VM_BASE_DIR}/xml/network.xml
-virsh net-define ${VM_BASE_DIR}/xml/network.xml
-virsh net-autostart ${VM_NETWORK}
-virsh net-start ${VM_NETWORK}
+#Isolated network
+cp files/network-host-only.xml ${VM_BASE_DIR}/xml/network-host-only.xml
+sed -i "s/YOURNETWORK/${VM_NETWORK_NAT}/g" ${VM_BASE_DIR}/xml/network-host-only.xml
+virsh net-define ${VM_BASE_DIR}/xml/network-host-only.xml
+virsh net-autostart ${VM_NETWORK_HOSTONLY}
+virsh net-start ${VM_NETWORK_HOSTONLY}
+#NAT
+cp files/network-nat.xml ${VM_BASE_DIR}/xml/network-nat.xml
+sed -i "s/YOURNETWORK/${VM_NETWORK_NAT}/g" ${VM_BASE_DIR}/xml/network-nat.xml
+virsh net-define ${VM_BASE_DIR}/xml/network-nat.xml
+virsh net-autostart ${VM_NETWORK_NAT}
+virsh net-start ${VM_NETWORK_NAT}
 newgrp libvirt
diff --git a/vm_manage.sh b/vm_manage.sh
index 9a3bf91..208e53b 100755
--- a/vm_manage.sh
+++ b/vm_manage.sh
@@ -33,6 +33,7 @@ OPTIONS
   -h         Show this help message
   -n NAME    Host name (required)
   -b BRIDGE  Bridge interface name
+  -H         Host Only Network
   -r RAM     RAM in MB (default: ${VM_MEM_SIZE})
   -c VCPUS   Number of VCPUs (default: ${VM_VCPUS})
   -s DISK    Disk size in GB (default: ${VM_DISK_SIZE})
@@ -60,7 +61,7 @@ case "${ACTION}" in
         VERBOSE=false
         NAME_SET=false
 
-        while getopts ":hn:b:r:c:s:v" opt; do
+        while getopts ":hn:b:H:r:c:s:v" opt; do
             case "${opt}" in
                 h)
                     usage
@@ -70,8 +71,12 @@ case "${ACTION}" in
                     NAME_SET=true
                     ;;
                 b)
-                    BRIDGE_INTERFACE="${OPTARG}"
+                    VM_BRIDGE_INT="${OPTARG}"
+                    VM_NETWORK_TYPE_DEFAULT="bridge"
                     ;;
+                H)
+                    VM_NETWORK_TYPE_DEFAULT="isolated"
+                    ;;            
                 r)
                     VM_MEM_SIZE="${OPTARG}"
                     ;;
@@ -103,7 +108,7 @@ case "${ACTION}" in
         source env_scripts/common.sh
         detect_distro
         #Check network type
-        vm_net_set_bridge_mode
+        vm_net_set_network_type
         #Check host os for guest debian type
         check_host_os
         #Read os_options.json and generate guests menu