diff --git a/pom.xml b/pom.xml
index ef90983..93e601d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,11 +10,11 @@
         <version>1.0.0-RELEASE</version>
     </parent>
 
-    <groupId>com.loafle</groupId>
-    <artifactId>snmp_crawler</artifactId>
+    <groupId>com.loafle.overflow</groupId>
+    <artifactId>crawler.snmp</artifactId>
     <packaging>jar</packaging>
     <version>1.0.0-SNAPSHOT</version>
-    <name>com.loafle.snmp_crawler</name>
+    <name>com.loafle.overflow.crawler.snmp</name>
 
     <dependencies>
         <!-- https://mvnrepository.com/artifact/org.snmp4j/snmp4j -->
@@ -25,7 +25,7 @@
         </dependency>
 
         <dependency>
-            <groupId>com.loafle</groupId>
+            <groupId>com.loafle.overflow</groupId>
             <artifactId>crawler_java</artifactId>
             <version>1.0.0-SNAPSHOT</version>
         </dependency>
diff --git a/snmp_crawler.iml b/snmp_crawler.iml
index 9489d7a..6b03842 100644
--- a/snmp_crawler.iml
+++ b/snmp_crawler.iml
@@ -14,7 +14,7 @@
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" name="Maven: org.snmp4j:snmp4j:2.5.0" level="project" />
     <orderEntry type="library" name="Maven: log4j:log4j:1.2.14" level="project" />
-    <orderEntry type="library" name="Maven: com.loafle:crawler_java:1.0.0-SNAPSHOT" level="project" />
+    <orderEntry type="library" name="Maven: com.loafle.overflow:crawler_java:1.0.0-SNAPSHOT" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
     <orderEntry type="library" name="Maven: org.slf4j:slf4j-api:1.7.13" level="project" />
diff --git a/src/main/java/com/loafle/overflow/crawler/SNMPCrawler.java b/src/main/java/com/loafle/overflow/crawler/snmp/SNMPCrawler.java
similarity index 94%
rename from src/main/java/com/loafle/overflow/crawler/SNMPCrawler.java
rename to src/main/java/com/loafle/overflow/crawler/snmp/SNMPCrawler.java
index 8bc949f..c32981e 100644
--- a/src/main/java/com/loafle/overflow/crawler/SNMPCrawler.java
+++ b/src/main/java/com/loafle/overflow/crawler/snmp/SNMPCrawler.java
@@ -1,5 +1,8 @@
-package com.loafle.overflow.crawler;
+package com.loafle.overflow.crawler.snmp;
 
+import com.loafle.overflow.crawler.Crawler;
+import com.loafle.overflow.crawler.snmp.version.SNMPv2c;
+import com.loafle.overflow.crawler.snmp.version.SNMPv3;
 import org.snmp4j.Snmp;
 import org.snmp4j.TransportMapping;
 import org.snmp4j.smi.Address;
@@ -36,7 +39,7 @@ public class SNMPCrawler extends Crawler {
     }
 
     @Override
-    public Object get(String id) {
+    protected Object getInternal(Map<String, Object> config) {
         //return getByV2c(MethodType.VALIDATE, null);
         //return getByV2c(MethodType.GET, new String[]{"1.3.6.1.2.1.1.5.0", "1.3.6.1.2.1.2.2.1.6.2"});
         return getByV2c(MethodType.WALK, new String[]{"1.3.6.1.2.1.25.2.3.1.3"});
diff --git a/src/main/java/com/loafle/overflow/crawler/SNMP.java b/src/main/java/com/loafle/overflow/crawler/snmp/version/SNMP.java
similarity index 98%
rename from src/main/java/com/loafle/overflow/crawler/SNMP.java
rename to src/main/java/com/loafle/overflow/crawler/snmp/version/SNMP.java
index af4e70d..50f7e68 100644
--- a/src/main/java/com/loafle/overflow/crawler/SNMP.java
+++ b/src/main/java/com/loafle/overflow/crawler/snmp/version/SNMP.java
@@ -1,4 +1,4 @@
-package com.loafle.overflow.crawler;
+package com.loafle.overflow.crawler.snmp.version;
 
 import org.snmp4j.PDU;
 import org.snmp4j.Snmp;
diff --git a/src/main/java/com/loafle/overflow/crawler/SNMPv2c.java b/src/main/java/com/loafle/overflow/crawler/snmp/version/SNMPv2c.java
similarity index 97%
rename from src/main/java/com/loafle/overflow/crawler/SNMPv2c.java
rename to src/main/java/com/loafle/overflow/crawler/snmp/version/SNMPv2c.java
index 798f7e5..44d65d6 100644
--- a/src/main/java/com/loafle/overflow/crawler/SNMPv2c.java
+++ b/src/main/java/com/loafle/overflow/crawler/snmp/version/SNMPv2c.java
@@ -1,4 +1,4 @@
-package com.loafle.overflow.crawler;
+package com.loafle.overflow.crawler.snmp.version;
 
 /**
  * Created by insanity on 17. 4. 7.
diff --git a/src/main/java/com/loafle/overflow/crawler/SNMPv3.java b/src/main/java/com/loafle/overflow/crawler/snmp/version/SNMPv3.java
similarity index 99%
rename from src/main/java/com/loafle/overflow/crawler/SNMPv3.java
rename to src/main/java/com/loafle/overflow/crawler/snmp/version/SNMPv3.java
index 1a83103..f6b0896 100644
--- a/src/main/java/com/loafle/overflow/crawler/SNMPv3.java
+++ b/src/main/java/com/loafle/overflow/crawler/snmp/version/SNMPv3.java
@@ -1,4 +1,4 @@
-package com.loafle.overflow.crawler;
+package com.loafle.overflow.crawler.snmp.version;
 
 import org.snmp4j.*;
 import org.snmp4j.mp.MPv3;
diff --git a/src/test/java/com/loafle/AppTest.java b/src/test/java/com/loafle/AppTest.java
index b3c87dd..dbb57f5 100644
--- a/src/test/java/com/loafle/AppTest.java
+++ b/src/test/java/com/loafle/AppTest.java
@@ -2,7 +2,7 @@
 package com.loafle;
 import static org.junit.Assert.*;
 
-import com.loafle.overflow.crawler.SNMPCrawler;
+import com.loafle.overflow.crawler.snmp.SNMPCrawler;
 import org.junit.Test;
 
 import java.util.Map;