diff --git a/.travis.yml b/.travis.yml
index dff5f3a..f5c99a7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1 +1 @@
-language: java
+language: java
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index e795edc..792f389 100644
--- a/pom.xml
+++ b/pom.xml
@@ -75,6 +75,12 @@
             <artifactId>hawkj</artifactId>
             <version>1.3</version>
         </dependency>
+        
+        <dependency>
+                <groupId>commons-net</groupId>
+                <artifactId>commons-net</artifactId>
+                <version>3.3</version>
+        </dependency>     
     </dependencies>
     <build>
         <plugins>
diff --git a/src/main/java/com/asquera/elasticsearch/plugins/http/AbstractAuthRestFilter.java b/src/main/java/com/asquera/elasticsearch/plugins/http/AbstractAuthRestFilter.java
index a002f63..8bdcd3a 100644
--- a/src/main/java/com/asquera/elasticsearch/plugins/http/AbstractAuthRestFilter.java
+++ b/src/main/java/com/asquera/elasticsearch/plugins/http/AbstractAuthRestFilter.java
@@ -5,6 +5,7 @@
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
+import org.apache.commons.net.util.SubnetUtils;
 
 import org.elasticsearch.common.logging.ESLogger;
 import org.elasticsearch.common.logging.Loggers;
@@ -19,7 +20,7 @@
 //# possible http config
 //http.basic.user: admin
 //http.basic.password: password
-//http.basic.ipwhitelist: ["localhost", "somemoreip"]
+//http.basic.ipwhitelist: ["localhost", "somemoreip" , "192.168.1.0/24"]
 //http.basic.xforward: "X-Forwarded-For"
 //# if you use javascript
 //# EITHER $.ajaxSetup({ headers: { 'Authorization': "Basic " + credentials }});
@@ -110,6 +111,11 @@ protected boolean isInIPWhitelist(RestRequest request) {
 //                addr, request.path(), request.params());
         if (whitelist.isEmpty() || addr.isEmpty())
             return false;
+        // Check if there are CIDR in whitelist configuration and then use it!
+        if (addr.contains("/")) {
+            SubnetUtils utils = new SubnetUtils(addr);
+            return utils.getInfo().isInRange(addr);
+        }        
         return whitelist.contains(addr);
     }