diff --git a/@overflow/model/discovery/Host.ts b/@overflow/model/discovery/Host.ts
index 42050ad..33c277e 100644
--- a/@overflow/model/discovery/Host.ts
+++ b/@overflow/model/discovery/Host.ts
@@ -2,6 +2,11 @@ import { Zone } from './Zone';
 import { Port } from './Port';
 import { MetaIPType } from '../meta';
 
+export const defaultOsType = 'UNKNOWN';
+export const defaultHostType = 'HOST';
+export const defaultHostVendor = 'UNKNOWN';
+export const defaultHostModel = 'UNKNOWN';
+
 export interface Host {
   metaIPType?: MetaIPType;
   name?: string;
@@ -10,9 +15,9 @@ export interface Host {
 
   osType?: string;
 
-  deviceType?: string;
-  deviceVendor?: string;
-  deviceModel?: string;
+  hostType?: string;
+  hostVendor?: string;
+  hostModel?: string;
 
   meta?: Map<string, Map<string, string>>;
   discoveredBy?: string[];
diff --git a/@overflow/model/discovery/Service.ts b/@overflow/model/discovery/Service.ts
index d638de7..b4bc4ac 100644
--- a/@overflow/model/discovery/Service.ts
+++ b/@overflow/model/discovery/Service.ts
@@ -1,12 +1,20 @@
 import { Port } from './Port';
 import { MetaCryptoType } from '../meta';
 
+export const defaultServiceType = 'ETC';
+export const defaultServiceVendor = 'UNKNOWN';
+export const defaultServiceVersion = 'UNKNOWN';
+
 export interface Service {
   metaCryptoType?: MetaCryptoType;
   key?: string;
   name?: string;
   description?: string;
 
+  serviceType?: string;
+  serviceVendor?: string;
+  serviceVersion?: string;
+
   meta?: Map<string, Map<string, string>>;
   discoveredBy?: string[];
   discoveredDate?: Date;
diff --git a/src/app/pages/home/home-page.component.ts b/src/app/pages/home/home-page.component.ts
index 2fae314..aac14d8 100644
--- a/src/app/pages/home/home-page.component.ts
+++ b/src/app/pages/home/home-page.component.ts
@@ -41,10 +41,6 @@ export class HomePageComponent implements OnInit, OnDestroy {
   showIntro = true;
   selectedNode = null;
 
-  // private visNetwork: any;
-  // private nodeSet: any;
-  // private edgeSet: any;
-
   private nodes: Node[];
   private links: Link[];
   public simulation: d3.Simulation<Node, Link> | undefined;
@@ -286,7 +282,7 @@ export class HomePageComponent implements OnInit, OnDestroy {
   }
 
   /**
-   * DiscoverHost
+   * DiscoveredHost
    */
   @RPCSubscriber({ method: 'DiscoveryService.DiscoveredHost' })
   public DiscoveredHost(host: Host) {
@@ -313,7 +309,7 @@ export class HomePageComponent implements OnInit, OnDestroy {
   }
 
   /**
-   * DiscoverHost
+   * DiscoveredPort
    */
   @RPCSubscriber({ method: 'DiscoveryService.DiscoveredPort' })
   public DiscoveredPort(port: Port) {
@@ -321,7 +317,7 @@ export class HomePageComponent implements OnInit, OnDestroy {
   }
 
   /**
-   * DiscoverHost
+   * DiscoveredService
    */
   @RPCSubscriber({ method: 'DiscoveryService.DiscoveredService' })
   public DiscoveredService(service: Service) {
@@ -348,17 +344,6 @@ export class HomePageComponent implements OnInit, OnDestroy {
     this.simulationRestart();
   }
 
-  // private checkNode(id: string, target: any): Node {
-  //   let node = this.getNode(id);
-  //   if (null === node) {
-  //     node = new Node(id);
-  //     node.target = target;
-  //   } else {
-  //     node.target = target;
-  //   }
-  //   return node;
-  // }
-
   private getNode(id: string): Node | null {
     let _n: Node = null;
     this.nodes.some((node): boolean => {
diff --git a/src/assets/image/icon/icon_db.svg b/src/assets/image/icon/icon_database.svg
similarity index 100%
rename from src/assets/image/icon/icon_db.svg
rename to src/assets/image/icon/icon_database.svg
diff --git a/src/assets/image/icon/icon_router.svg b/src/assets/image/icon/icon_router.svg
index a13f19a..5aa1408 100644
--- a/src/assets/image/icon/icon_router.svg
+++ b/src/assets/image/icon/icon_router.svg
@@ -3,51 +3,46 @@
 <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
 	 viewBox="0 0 66 56" style="enable-background:new 0 0 66 56;" xml:space="preserve">
 <style type="text/css">
-	.st0{fill:#E3E3E2;}
-	.st1{fill:#81A6AF;}
-	.st2{fill:#FFFFFF;}
+	.st0{fill:#81A6AF;}
+	.st1{fill:#FFFFFF;}
 </style>
-<g>
-	<path class="st0" d="M44.9,52.5H21.2l-11.9-9l11.9-9h23.7l11.9,9L44.9,52.5z M66,43.5L49.6,30.9h-33L0.1,43.5L16.6,56h33L66,43.5z"
-		/>
-</g>
 <g>
 	<g>
-		<path class="st1" d="M15.9,45v-4.5h14.9V38c-1-0.7-1.6-1.8-1.6-3H18.4c-1.5,0-2.7-1.2-2.7-2.7v-7.6c0-1.5,1.2-2.7,2.7-2.7h0.2
+		<path class="st0" d="M15.9,45v-4.5h14.9V38c-1-0.7-1.6-1.8-1.6-3H18.4c-1.5,0-2.7-1.2-2.7-2.7v-7.6c0-1.5,1.2-2.7,2.7-2.7h0.2
 			v-9.6c0-1.6,1.3-3,3-3s3,1.3,3,3V22h23.2c1.5,0,2.7,1.2,2.7,2.7v7.6c0,1.5-1.2,2.7-2.7,2.7H36.9c0,1.2-0.6,2.3-1.6,3v2.5h14.9V45
-			H15.9z M42.9,27.4c-0.6,0-1.1,0.5-1.1,1.1c0,0.6,0.5,1.1,1.1,1.1s1.1-0.5,1.1-1.1C44,27.9,43.5,27.4,42.9,27.4z M36.3,27.4
-			c-0.6,0-1.1,0.5-1.1,1.1c0,0.6,0.5,1.1,1.1,1.1s1.1-0.5,1.1-1.1C37.5,27.9,37,27.4,36.3,27.4z M29.8,27.4c-0.6,0-1.1,0.5-1.1,1.1
-			c0,0.6,0.5,1.1,1.1,1.1c0.6,0,1.1-0.5,1.1-1.1C31,27.9,30.4,27.4,29.8,27.4z M23.3,27.4c-0.6,0-1.1,0.5-1.1,1.1
-			c0,0.6,0.5,1.1,1.1,1.1c0.6,0,1.1-0.5,1.1-1.1C24.4,27.9,23.9,27.4,23.3,27.4z"/>
-		<path class="st2" d="M21.6,10.4c1.1,0,2,0.9,2,2V23h24.2c1,0,1.7,0.8,1.7,1.7v7.6c0,1-0.8,1.7-1.7,1.7H35.9c0,0.4,0,0.8,0,0.9
+			H15.9z M42.9,27.4c-0.6,0-1.1,0.5-1.1,1.1s0.5,1.1,1.1,1.1s1.1-0.5,1.1-1.1S43.5,27.4,42.9,27.4z M36.3,27.4
+			c-0.6,0-1.1,0.5-1.1,1.1s0.5,1.1,1.1,1.1s1.1-0.5,1.1-1.1C37.5,27.9,37,27.4,36.3,27.4z M29.8,27.4c-0.6,0-1.1,0.5-1.1,1.1
+			s0.5,1.1,1.1,1.1s1.1-0.5,1.1-1.1C31,27.9,30.4,27.4,29.8,27.4z M23.3,27.4c-0.6,0-1.1,0.5-1.1,1.1s0.5,1.1,1.1,1.1
+			s1.1-0.5,1.1-1.1S23.9,27.4,23.3,27.4z"/>
+		<path class="st1" d="M21.6,10.4c1.1,0,2,0.9,2,2V23h24.2c1,0,1.7,0.8,1.7,1.7v7.6c0,1-0.8,1.7-1.7,1.7H35.9c0,0.4,0,0.8,0,0.9
 			c0,1.1-0.7,2.1-1.6,2.6v4.1h14.9V44H16.9v-2.5h14.9v-4.1c-1-0.5-1.6-1.4-1.6-2.6c0,0,0-0.4,0-0.9H18.4c-1,0-1.7-0.8-1.7-1.7v-7.6
 			c0-1,0.8-1.7,1.7-1.7h1.2V12.4C19.6,11.3,20.5,10.4,21.6,10.4 M42.9,30.7c1.2,0,2.1-1,2.1-2.1s-1-2.1-2.1-2.1
 			c-1.2,0-2.1,1-2.1,2.1S41.7,30.7,42.9,30.7 M36.3,30.7c1.2,0,2.1-1,2.1-2.1s-1-2.1-2.1-2.1c-1.2,0-2.1,1-2.1,2.1
 			S35.2,30.7,36.3,30.7 M29.8,30.7c1.2,0,2.1-1,2.1-2.1s-1-2.1-2.1-2.1c-1.2,0-2.1,1-2.1,2.1S28.6,30.7,29.8,30.7 M23.3,30.7
 			c1.2,0,2.1-1,2.1-2.1s-1-2.1-2.1-2.1c-1.2,0-2.1,1-2.1,2.1S22.1,30.7,23.3,30.7 M21.6,8.4c-2.2,0-4,1.8-4,4v8.7
-			c-1.7,0.4-2.9,1.9-2.9,3.7v7.6c0,2.1,1.7,3.7,3.7,3.7h10c0.2,1,0.7,1.8,1.5,2.5v1H16.9h-2v2V44v2h2h32.3h2v-2v-2.5v-2h-2H36.3v-1
+			c-1.7,0.4-2.9,1.9-2.9,3.7v7.6c0,2.1,1.7,3.7,3.7,3.7h10c0.2,1,0.7,1.8,1.5,2.5v1h-13h-2v2V44v2h2h32.3h2v-2v-2.5v-2h-2H36.3v-1
 			c0.7-0.6,1.2-1.5,1.5-2.5h10c2.1,0,3.7-1.7,3.7-3.7v-7.6c0-2.1-1.7-3.7-3.7-3.7H25.6v-8.6C25.6,10.2,23.8,8.4,21.6,8.4L21.6,8.4z
-			 M42.9,28.7c-0.1,0-0.1-0.1-0.1-0.1s0.1-0.1,0.1-0.1c0.1,0,0.1,0.1,0.1,0.1S43,28.7,42.9,28.7L42.9,28.7z M36.3,28.7
-			c-0.1,0-0.1-0.1-0.1-0.1s0.1-0.1,0.1-0.1c0.1,0,0.1,0.1,0.1,0.1S36.4,28.7,36.3,28.7L36.3,28.7z M29.8,28.7
-			c-0.1,0-0.1-0.1-0.1-0.1s0.1-0.1,0.1-0.1s0.1,0.1,0.1,0.1S29.9,28.7,29.8,28.7L29.8,28.7z M23.3,28.7c-0.1,0-0.1-0.1-0.1-0.1
-			s0.1-0.1,0.1-0.1s0.1,0.1,0.1,0.1S23.4,28.7,23.3,28.7L23.3,28.7z"/>
+			 M42.9,28.7c-0.1,0-0.1-0.1-0.1-0.1l0.1-0.1c0.1,0,0.1,0.1,0.1,0.1S43,28.7,42.9,28.7L42.9,28.7z M36.3,28.7
+			c-0.1,0-0.1-0.1-0.1-0.1l0.1-0.1c0.1,0,0.1,0.1,0.1,0.1S36.4,28.7,36.3,28.7L36.3,28.7z M29.8,28.7c-0.1,0-0.1-0.1-0.1-0.1
+			l0.1-0.1l0.1,0.1C29.9,28.6,29.9,28.7,29.8,28.7L29.8,28.7z M23.3,28.7c-0.1,0-0.1-0.1-0.1-0.1l0.1-0.1l0.1,0.1
+			C23.4,28.6,23.4,28.7,23.3,28.7L23.3,28.7z"/>
 	</g>
 	<g>
-		<path class="st1" d="M33.4,23c-0.6,0-1.1-0.2-1.6-0.5c-0.6-0.4-1-1.1-1.2-1.8c-0.1-0.7,0-1.5,0.5-2.1c1.3-1.9,2-4.2,2-6.5
-			c0-2.3-0.7-4.5-2-6.4c-0.9-1.3-0.5-3.1,0.8-3.9c0.5-0.3,1-0.5,1.6-0.5c0.9,0,1.8,0.5,2.4,1.2c1.9,2.8,2.9,6.2,2.9,9.6
+		<path class="st0" d="M33.4,23c-0.6,0-1.1-0.2-1.6-0.5c-0.6-0.4-1-1.1-1.2-1.8c-0.1-0.7,0-1.5,0.5-2.1c1.3-1.9,2-4.2,2-6.5
+			s-0.7-4.5-2-6.4c-0.9-1.3-0.5-3.1,0.8-3.9c0.5-0.3,1-0.5,1.6-0.5c0.9,0,1.8,0.5,2.4,1.2c1.9,2.8,2.9,6.2,2.9,9.6
 			c0,3.5-1,6.8-3,9.7C35.2,22.5,34.3,23,33.4,23z"/>
-		<path class="st2" d="M33.4,2.2C34,2.2,34.6,2.5,35,3c1.8,2.7,2.8,5.8,2.8,9c0,3.3-1,6.4-2.8,9.1C34.5,21.7,34,22,33.4,22
+		<path class="st1" d="M33.4,2.2C34,2.2,34.6,2.5,35,3c1.8,2.7,2.8,5.8,2.8,9c0,3.3-1,6.4-2.8,9.1c-0.5,0.6-1,0.9-1.6,0.9
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-			C32.7,2.3,33.1,2.2,33.4,2.2 M33.4,0.2c-0.8,0-1.5,0.2-2.1,0.7c-1.8,1.2-2.2,3.6-1,5.3C31.4,7.9,32,10,32,12.1
-			c0,2.1-0.6,4.2-1.8,5.9c-0.6,0.8-0.8,1.9-0.6,2.9c0.2,1,0.8,1.9,1.6,2.5c0.6,0.4,1.4,0.7,2.2,0.7c1.3,0,2.4-0.6,3.2-1.7
-			c2.1-3,3.2-6.6,3.2-10.3c0-3.6-1.1-7.2-3.1-10.2C35.9,0.8,34.7,0.2,33.4,0.2L33.4,0.2z"/>
+			C32.7,2.3,33.1,2.2,33.4,2.2 M33.4,0.2c-0.8,0-1.5,0.2-2.1,0.7c-1.8,1.2-2.2,3.6-1,5.3C31.4,7.9,32,10,32,12.1s-0.6,4.2-1.8,5.9
+			c-0.6,0.8-0.8,1.9-0.6,2.9c0.2,1,0.8,1.9,1.6,2.5c0.6,0.4,1.4,0.7,2.2,0.7c1.3,0,2.4-0.6,3.2-1.7c2.1-3,3.2-6.6,3.2-10.3
+			c0-3.6-1.1-7.2-3.1-10.2C35.9,0.8,34.7,0.2,33.4,0.2L33.4,0.2z"/>
 	</g>
 	<g>
-		<path class="st1" d="M28.4,19.5c-0.6,0-1.1-0.2-1.6-0.5c-1.3-0.9-1.6-2.6-0.8-3.9c0.6-0.9,0.9-1.9,0.9-3c0-1.1-0.3-2.1-0.9-3
-			c-0.4-0.6-0.6-1.4-0.4-2.1c0.2-0.7,0.6-1.4,1.2-1.8c0.5-0.3,1-0.5,1.6-0.5c1,0,1.8,0.5,2.4,1.3c1.2,1.8,1.8,3.9,1.8,6.1
-			c0,2.2-0.7,4.4-1.9,6.2C30.2,19.1,29.4,19.5,28.4,19.5z"/>
-		<path class="st2" d="M28.5,5.7c0.6,0,1.2,0.3,1.5,0.8c1.1,1.7,1.7,3.6,1.7,5.5c0,2-0.6,4-1.7,5.7c-0.4,0.5-0.9,0.8-1.5,0.8
-			c-0.4,0-0.7-0.1-1-0.3c-0.8-0.6-1.1-1.7-0.5-2.6c0.7-1.1,1.1-2.3,1.1-3.6c0-1.3-0.4-2.5-1.1-3.5c-0.6-0.8-0.3-2,0.5-2.5
+		<path class="st0" d="M28.4,19.5c-0.6,0-1.1-0.2-1.6-0.5c-1.3-0.9-1.6-2.6-0.8-3.9c0.6-0.9,0.9-1.9,0.9-3s-0.3-2.1-0.9-3
+			c-0.4-0.6-0.6-1.4-0.4-2.1s0.6-1.4,1.2-1.8c0.5-0.3,1-0.5,1.6-0.5c1,0,1.8,0.5,2.4,1.3c1.2,1.8,1.8,3.9,1.8,6.1s-0.7,4.4-1.9,6.2
+			C30.2,19.1,29.4,19.5,28.4,19.5z"/>
+		<path class="st1" d="M28.5,5.7c0.6,0,1.2,0.3,1.5,0.8c1.1,1.7,1.7,3.6,1.7,5.5c0,2-0.6,4-1.7,5.7c-0.4,0.5-0.9,0.8-1.5,0.8
+			c-0.4,0-0.7-0.1-1-0.3c-0.8-0.6-1.1-1.7-0.5-2.6c0.7-1.1,1.1-2.3,1.1-3.6S27.7,9.5,27,8.5c-0.6-0.8-0.3-2,0.5-2.5
 			C27.8,5.8,28.1,5.7,28.5,5.7 M28.5,3.7c-0.7,0-1.5,0.2-2.1,0.6c-1.8,1.2-2.3,3.5-1.1,5.3c0.5,0.7,0.7,1.6,0.7,2.4
 			c0,0.9-0.3,1.7-0.8,2.5c-1.2,1.8-0.7,4.1,1,5.3c0.6,0.4,1.4,0.7,2.1,0.7c1.3,0,2.5-0.6,3.2-1.7c1.4-2,2.1-4.3,2.1-6.8
 			c0-2.4-0.7-4.7-2-6.6C31,4.3,29.8,3.7,28.5,3.7L28.5,3.7z"/>
@@ -55,22 +50,20 @@
 </g>
 <g>
 	<g>
-		<path class="st1" d="M35.9,34.9c0,0,0-0.4,0-0.9h11.9c1,0,1.7-0.8,1.7-1.7v-7.6c0-1-0.8-1.7-1.7-1.7H23.6V12.4c0-1.1-0.9-2-2-2
-			s-2,0.9-2,2V23h-1.2c-1,0-1.7,0.8-1.7,1.7v7.6c0,1,0.8,1.7,1.7,1.7h11.9c0,0.4,0,0.8,0,0.9c0,1.1,0.7,2.1,1.6,2.6v4.1H16.9V44
-			h32.3v-2.5H34.3v-4.1C35.3,37,35.9,36,35.9,34.9z M42.9,26.4c1.2,0,2.1,1,2.1,2.1c0,1.2-1,2.1-2.1,2.1c-1.2,0-2.1-1-2.1-2.1
+		<path class="st0" d="M35.9,34.9c0,0,0-0.4,0-0.9h11.9c1,0,1.7-0.8,1.7-1.7v-7.6c0-1-0.8-1.7-1.7-1.7H23.6V12.4c0-1.1-0.9-2-2-2
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diff --git a/src/assets/image/icon/icon_webserver.svg b/src/assets/image/icon/icon_web.svg
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diff --git a/src/assets/image/logo/logo_synology.svg b/src/assets/image/logo/logo_synology.svg
deleted file mode 100644
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