diff --git a/src/main/java/com/loafle/overflow/model/discovery/type/PortType.java b/src/main/java/com/loafle/overflow/model/discovery/type/PortType.java
deleted file mode 100644
index 21fa8bc..0000000
--- a/src/main/java/com/loafle/overflow/model/discovery/type/PortType.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.loafle.overflow.model.discovery.type;
-
-/**
- * Created by snoop on 17. 6. 27.
- */
-public enum PortType {
-    TCP("TCP"),
-    UDP("UDP"),
-    TLS("TLS");
-
-    private String stringValue;
-    PortType(String string) {stringValue = string;}
-
-    @Override
-    public String toString() {
-        return stringValue;
-    }
-}
\ No newline at end of file
diff --git a/src/main/java/com/loafle/overflow/model/infra/InfraHost.java b/src/main/java/com/loafle/overflow/model/infra/InfraHost.java
index 71980da..7abfe06 100644
--- a/src/main/java/com/loafle/overflow/model/infra/InfraHost.java
+++ b/src/main/java/com/loafle/overflow/model/infra/InfraHost.java
@@ -12,9 +12,10 @@ import java.util.Date;
 public class InfraHost extends Infra {
 //    private long id;
     private InfraOS os;
-    private long ip;
-    private long mac;
-    private Date createDate;
+    private String  ipV4;
+    private String  ipV6;
+    private String  mac;
+    private Date    createDate;
 
 //    @Id
 //    @GeneratedValue(strategy= GenerationType.IDENTITY)
@@ -38,21 +39,31 @@ public class InfraHost extends Infra {
 
     @Basic
     @Column(name = "IP", nullable = true)
-    public long getIp() {
-        return ip;
+    public String getIpV4() {
+        return ipV4;
     }
 
-    public void setIp(long ip) {
-        this.ip = ip;
+    public void setIpV4(String ipV4) {
+        this.ipV4 = ipV4;
+    }
+
+    @Basic
+    @Column(name = "IP", nullable = true)
+    public String getIpV6() {
+        return ipV6;
+    }
+
+    public void setIpV6(String ipV4) {
+        this.ipV6 = ipV4;
     }
 
     @Basic
     @Column(name = "MAC", nullable = true)
-    public long getMac() {
+    public String getMac() {
         return mac;
     }
 
-    public void setMac(long mac) {
+    public void setMac(String mac) {
         this.mac = mac;
     }
 
diff --git a/src/main/java/com/loafle/overflow/model/sensorconfig/Connection.java b/src/main/java/com/loafle/overflow/model/sensorconfig/Connection.java
index ad5fd26..315585e 100644
--- a/src/main/java/com/loafle/overflow/model/sensorconfig/Connection.java
+++ b/src/main/java/com/loafle/overflow/model/sensorconfig/Connection.java
@@ -6,17 +6,17 @@ import com.loafle.overflow.core.type.PortType;
  * Connection
  */
 public class Connection {
-  private String ip;
+  private String ipV4;
   private int port;
   private PortType portType;
   private boolean ssl;
 
-  public String getIp() {
-    return ip;
+  public String getIpV4() {
+    return ipV4;
   }
 
-  public void setIp(String ip) {
-    this.ip = ip;
+  public void getIpV4(String ipV4) {
+    this.ipV4 = ipV4;
   }
 
   public int getPort() {
diff --git a/src/main/java/com/loafle/overflow/service/central/infra/InfraHostService.java b/src/main/java/com/loafle/overflow/service/central/infra/InfraHostService.java
index 35111a8..8f799f1 100644
--- a/src/main/java/com/loafle/overflow/service/central/infra/InfraHostService.java
+++ b/src/main/java/com/loafle/overflow/service/central/infra/InfraHostService.java
@@ -10,5 +10,5 @@ import com.loafle.overflow.model.infra.InfraHost;
 public interface InfraHostService {
   InfraHost regist(InfraHost infraHost) throws OverflowException;
   InfraHost read(long id) throws OverflowException;
-  InfraHost readByIp(long ip) throws OverflowException;
+  InfraHost readByIp(String ip) throws OverflowException;
 }