diff --git a/tlsserver.go b/tlsserver.go
index b414848..3022f0e 100644
--- a/tlsserver.go
+++ b/tlsserver.go
@@ -71,9 +71,29 @@ func handleConnection(conn net.Conn) {
 	cmd.Stdin = conn
 	cmd.Stdout = conn
 	cmd.Stderr = os.Stderr
-	err := cmd.Run()
+
+	// prepare environment according to tcp-environ(5)
+	lh, lp, err := net.SplitHostPort(conn.LocalAddr().String())
 	if err != nil {
 		log.Println(err)
+		return
+	}
+	rh, rp, err := net.SplitHostPort(conn.LocalAddr().String())
+	if err != nil {
+		log.Println(err)
+		return
+	}
+	cmd.Env = make([]string,0)
+	cmd.Env = append(cmd.Env, "PATH="+os.Getenv("PATH"))
+	cmd.Env = append(cmd.Env, "PROTO=TCP")
+	cmd.Env = append(cmd.Env, "TCPLOCALIP="+lh)
+	cmd.Env = append(cmd.Env, "TCPLOCALPORT="+lp)
+	cmd.Env = append(cmd.Env, "TCPREMOTEIP="+rh)
+	cmd.Env = append(cmd.Env, "TCPREMOTEPORT="+rp)
+
+	err = cmd.Run()
+	if err != nil {
+		log.Println("after Run: ", err)
 	}
 	log.Println("Done with connection", conn.RemoteAddr())
 }