diff --git a/README.md b/README.md
index 2cd3a31..8656660 100644
--- a/README.md
+++ b/README.md
@@ -1,27 +1,87 @@
-SEC SwarmLab.io
-====================
+# hybrid-sec  !
 
-Orchestrate a Swarmlab SEC cluster:
 
-+ Using Docker Compose to replicate production environment on single Docker host
+##  LabInstance sec
 
 
-# Single-host with Docker Compose 
+![alt text](images/swarmlab-network.png "")
 
-See INSTALL
 
 
-Relevant files:
+## Quickstart
 
+This is a quickstart guide of howto use this *LabInstance to deploy Linux sec systems*
+
+### HowTo use it
+
+
+### Default Configuration 
+
+- Working Directory
+
+> /project
+
+- Default user
+
+> docker
+
+- Default password
+
+> docker
+
+- Default password4root
+
+> pass
+
+
+####  Find lab workers
+
+
+> ifconfig
+>
+> nmap -sP 172.130.0.0/24
+>
+> or
+>
+> /project/bin/swarmlab-nmap
+
+
+#### connect to workers
+
+```bash
+ ssh docker@[IP]
 ```
-Project
-├── Dockerfile          # Image specification
-├── project             # Sample program source code
-│   └── hello_world.c
-├── ssh                 # keys for accessing
-│   ├── id_rsa          # (could generate your own)
-│   └── id_rsa.pub
-├── .env                # General configuration
-├── docker-compose.yml  # Container orchestration 
-└── swarmlab-mpi          # Commands wrapper ultility
+
+
+#### Create hosts file
+
+
+```bash
+/project/bin/swarmlab-nmap > /project/hosts
 ```
+
+
+---
+**NOTE:** copy files to all clients
+
+```bash
+while read -r line; 
+ do 
+   scp /project/file docker@$line:/some_dir/file
+done < /project/hosts
+```
+---
+ 
+
+
+---
+**MORE INFO** 
+
+See 
+
+- [sec1](http://docs.swarmlab.io/SwarmLab-HowTos/labs/sec/ex-1_iptables.adoc.html){:target="_blank"}
+- http://docs.swarmlab.io/SwarmLab-HowTos/labs/sec/ex-2_iptables.adoc.html
+- http://docs.swarmlab.io/SwarmLab-HowTos/labs/sec/ex-3_iptables.adoc.html
+- http://docs.swarmlab.io/SwarmLab-HowTos/labs/sec/ex-3a_iptables-flow-chart.adoc.html
+---
+
diff --git a/images/swarmlab-network.png b/images/swarmlab-network.png
new file mode 100644
index 0000000..8a34610
Binary files /dev/null and b/images/swarmlab-network.png differ
diff --git a/install/usr/share/swarmlab.io/sec/project/bin/swarmlab-nmap b/install/usr/share/swarmlab.io/sec/project/bin/swarmlab-nmap
new file mode 100755
index 0000000..5f54ecf
--- /dev/null
+++ b/install/usr/share/swarmlab.io/sec/project/bin/swarmlab-nmap
@@ -0,0 +1,6 @@
+#/bin/sh
+
+#ip=`nslookup hybrid-mpi_master_1.hybrid-mpi_hybrid-mpi | grep Addr | cut -d':' -f2 | grep -v 127.0.`
+ip=`nslookup $NODENAME | grep Addr | cut -d':' -f2 | grep -v 127.0.`
+nmap -sn -oG - $ip/24 | grep Up | grep $NODENETWORK | cut -d ' ' -f 2
+
diff --git a/install/usr/share/swarmlab.io/sec/swarmlab-sec b/install/usr/share/swarmlab.io/sec/swarmlab-sec
index ecf67bd..6e7b16d 100755
--- a/install/usr/share/swarmlab.io/sec/swarmlab-sec
+++ b/install/usr/share/swarmlab.io/sec/swarmlab-sec
@@ -36,6 +36,8 @@ IMAGE_origin="ubuntu:18.04"
 bootstrap="sec_bootstrap"
 hostnames="auto_update_hosts"
 hostnames_get="get_hosts"
+NODENAME=${HYBRID_NETWORK}_master_1.${HYBRID_NETWORK}_${HYBRID_NETWORK}
+NODENETWORK=${HYBRID_NETWORK}
 # shellcheck disable=SC1091
 #. ./.env
 
@@ -305,6 +307,7 @@ fi
 
 
 /bin/mkdir -p $Wdir/project
+/bin/cp -rf $DIR/project/bin $Wdir/project
 /bin/cp -f $DIR/project/hello_world.sh $Wdir/project
 /bin/cp -f $DIR/$bootstrap $Wdir/$bootstrap
 /bin/cp -f $DIR/$hostnames $Wdir/$hostnames
@@ -327,6 +330,9 @@ services:
   master:
     image: $REGISTRY_ADDR:$REGISTRY_PORT/$IMAGE_NAME
     privileged: true
+    environment:
+     - NODENAME=${NODENAME}
+     - NODENETWORK=${NODENETWORK}
     cap_add:
       - NET_ADMIN
     user: root
@@ -342,6 +348,9 @@ services:
   worker:
     image: $REGISTRY_ADDR:$REGISTRY_PORT/$IMAGE_NAME
     privileged: true
+    environment:
+     - NODENAME=${NODENAME}
+     - NODENETWORK=${NODENETWORK}
     cap_add:
       - NET_ADMIN
     user: root