diff --git a/README.MD b/README.MD
index 3f5cd48..739ce70 100644
--- a/README.MD
+++ b/README.MD
@@ -10,20 +10,24 @@ This project aims to provide an easy-to-setup TCP forwarding solution:
 ```
 
 This project can be used especially to bypass firewalls that blocks traffics
-from ports others than the HTTP / HTTPS ports.
+from ports others than the HTTP / HTTPS ports. The TCP traffic is encapsulated inside an
+HTTP WebSocket between the client and the server relays.
 
 ## Authentication
-The client can authenticate agains the server relays through two different means:
+The client can authenticate against the server relays through two different means:
 
-* Using a token
+* Using a token (the server relay can have several tokens at the same time)
 * Using a client TLS certificate. In this case, the server relay must act as a HTTPS server, and you must provide the
   server the required certificates / key files in PEM format. It is also possible to provide the  server a CRL file.
 
 
-## Binaries
-This repository contains two binaries:
+## Binary
+This repository contains a single binary which can be used as a server or a client, depending of command line arguments:
 
-* `tpc_relay_server`: The server relay. In case of token authentication, it can be put behind a reverse proxy.
-* `tcp_relay_client`: The client relay
+* Server mode: Act as a server relay. In case of token authentication (NOT TLS authentication), it can be put behind a reverse proxy.
+* Client mode: Act as a client relay. It basically does three things:
+  * Fetch the list of forwared ports configuration from the server
+  * Listen to these port locally
+  * When a connection occurs on one of these ports, it forward the data exchanged by the socket to and from the server.
 
 A single server - client relay pair can relay multiple ports simultaneously from the same machine.