diff --git a/lib/catproxy.js b/lib/catproxy.js
index d6a1fcd..45cb87c 100644
--- a/lib/catproxy.js
+++ b/lib/catproxy.js
@@ -1,11 +1,13 @@
 // catproxy.js
 // Caterpillar Proxy Integration for WelsonJS framework
 // https://github.com/gnh1201/welsonjs
-// https://github.com/gnh1201/caterpillar
 var JSONRPC2 = require("lib/jsonrpc2");
 
 function CatProxyClient(url) {
-    var env = {"target": url, "method": ""};
+    var env = {
+        "target": "http://localhost:5555/jsonrpc2",    // Check this: https://github.com/gnh1201/caterpillar
+        "method": ""
+    };
 
     this.set_env = function(k, v) {
         env[k] = v || null;
@@ -54,6 +56,10 @@ function CatProxyClient(url) {
 
         return result;
     }
+
+    if (typeof url !== "undefined") {
+        this.set_env(url);
+    }
 }
 
 function create(url) {
@@ -63,7 +69,7 @@ function create(url) {
 exports.create = create;
 exports.CatProxyClient = CatProxyClient;
 
-exports.VERSIONINFO = "Caterpillar Proxy Integration (caterpillar.js) version 0.1.4";
+exports.VERSIONINFO = "Caterpillar Proxy Integration (caterpillar.js) version 0.1.5";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;
diff --git a/lib/nmap.js b/lib/nmap.js
index 75701ee..8ca6e6c 100644
--- a/lib/nmap.js
+++ b/lib/nmap.js
@@ -1,14 +1,28 @@
 ////////////////////////////////////////////////////////////////////////
-// NMAP API
+// NMAP interface API
 ////////////////////////////////////////////////////////////////////////
 
-var NMAPObject = function() {
-	this.binPath = "bin\\32bit\\nmap-7.92\\nmap.exe";
+var client = require("lib/catproxy");
 
-	this.start = function() {
-		var cmd = [];
-		// .. todo ..
-	};
+var PortScanner = function(binpath, url) {
+    this.url = url;
+    this.binpath = binpath;
+
+    this.scan = function(hosts) {
+        var worker = client.create(url);
+        worker.set_method("scan_ports_by_hosts");
+
+        var result = worker.exec({
+            "binpath": this.binpath,
+            "hosts": hosts
+        });
+        return result;
+    }
 };
 
-exports.NMAPObject = NMAPObject;
+exports.PortScanner = PortScanner;
+
+exports.VERSIONINFO = "NMAP interface version 0.2";
+exports.AUTHOR = "abuse@catswords.net";
+exports.global = global;
+exports.require = global.require;