diff --git a/remote_connection.sh b/remote_connection.sh
index 9ebf8ec..06f02fb 100755
--- a/remote_connection.sh
+++ b/remote_connection.sh
@@ -12,34 +12,77 @@
 # and % will delete the parameter at the end.
 
 
-User="root"
-Port=10022
-Version="1.1.0"
+default_user="root"
+default_hostname="localhost"
+default_ssh_port="22"
+default_rsp_port="3389"
+default_vnc_port="5900"
+
+Version="2.0.0"
 
 Help_message="
-$(basename $0) [OPTION] [OPTION=VALUE]
+$(basename $0) PROTOCOL [OPTION] [OPTION=VALUE]
 
-script which permit to launch ssh to connect to the vm on localhost without letting any traces on this computer.
+script which permit to launch a remote connection protocol.
 
-    -u <user>,--user=<user>     Select the user, by default root
-    -p <port>,--port=<port>     Select the port, by default 10022
+PROTOCOL available
+    ssh                 A command line protocol which can be used to connect with tcp
+    rsp                 The windows remote server protocol
+
+PROTOCOL #TODO
+    vnc                 Virtual Networking Computing, permit to have access to a graphical user interface.
+
+OPTION available
     -v, --version               print the version and exit
     -h, --help                  print this help and exit
+    -u <user>,--user=<user>     Select the user, by default root
+    -p <port>,--port=<port>     Select the port, by default 10022
     -H <hostname>, --hostname=<hostname>    Select the host to connect #TODO
-    -P <protocol>, --protocol=<protocol>    Select the protocol to use #TODO
 "
 
 
+start_ssh() {
+    if [ "${port}" == "" ]
+    then
+        port="${default_ssh_port}"
+    fi
+    echo "start ssh"
+}
+
+start_rsp() {
+    if [ "${port}" == "" ]
+    then
+        port="${default_rsp_port}"
+    fi
+    echo "start rsp"
+}
+
+
+case "$1" in
+    "ssh")
+        protocol="ssh"
+        ;;
+    "rsp")
+        protocol="rsp"
+        ;;
+    *)
+        echo "protocol $1 uknown" >&2
+        exit 1
+esac
+
 # looking for double parametters.
 
-for (( arg=1; arg<$#; arg++)); do
+for (( arg=2; arg<$#; arg++)); do
     value="$((arg+1))"
     if [ "${!arg}" == "-u" ]
     then
-        User=${!value}
+        user="${!value}"
     elif [ "${!arg}" == "-p" ]
     then
-        Port=${!value}
+        port="${!value}"
+    elif [ "${!arg}" == "-H" ]
+    then
+        hostname="${!arg}"
     fi
 done
 
@@ -49,10 +92,13 @@ done
 for i in "$@"; do
     if [ "${i%=*}" == "--user" ]
     then
-        User="${i#*=}"
+        user="${i#*=}"
     elif [ "${i%=*}" == "--port" ]
     then
-        Port="${i#*=}"
+        port="${i#*=}"
+    elif [ "${i#*=}" == "--hostname" ]
+    then
+        hostname="${i#*=}"
     elif [ "${i}" == "--version" ] || [ "${i}" == "-v" ]
     then
         echo "$(basename $0) v.${Version}"
@@ -64,10 +110,35 @@ for i in "$@"; do
     fi
 done
 
-echo try to connect with user=${User} and port=${Port}
-echo port=${Port}
+if [ "${user}" == "" ]
+then
+    user="${default_user}"
+fi
+if [ "${hostname}" == "" ]
+then
+    hostname="${default_hostname}"
+fi
 
-ssh -o "StrictHostKeyChecking no" -o "UserKnownHostsFile=/dev/null" -p ${Port} ${User}@localhost
+
+
+case "${protocol}" in
+    "ssh")
+        start_ssh
+        ;;
+    "rsp")
+        start_rsp
+        ;;
+    *)
+        echo "CRITICAL protocol ${protocol} uknown" >&2
+        exit 1
+        ;;
+esac
+
+
+echo try to connect with user=${user} and port=${port}
+echo port=${port}
+
+ssh -o "StrictHostKeyChecking no" -o "UserKnownHostsFile=/dev/null" -p ${port} ${user}@localhost
 
 
 # add possibility for vnc and rsp