diff --git a/WebContent/WEB-INF/views/frame.html b/WebContent/WEB-INF/views/frame.html
index ea322f5..cc038bf 100644
--- a/WebContent/WEB-INF/views/frame.html
+++ b/WebContent/WEB-INF/views/frame.html
@@ -52,7 +52,7 @@
                     <li><a href="feature" th:href="@{/web/function}">Function</a></li>
                     <li><a  th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="feature" th:href="@{/web/feature}">Feature</a></li>
                     <li><a  th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="demo" th:href="@{/web/demo}">Demo</a></li>
-                    <li><a  th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="people" th:href="@{/web/people}">People</a></li>
+                    <!-- <li><a  th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="people" th:href="@{/web/people}">People</a></li> -->
                     <li><a  th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="publication" th:href="@{/web/publication}">Publication</a></li>
                     <li><a  th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="about" th:href="@{/web/about}">About</a></li>
                     <li>
@@ -76,12 +76,12 @@
                             <li><a href="feature" th:href="@{/web/function}">Function</a></li>
                             <li><a href="feature" th:href="@{/web/feature}">Feature</a></li>
                             <li><a href="demo" th:href="@{/web/demo}">Demo</a></li>
-                            <li><a href="people" th:href="@{/web/people}">People</a></li>
+                            <!-- <li><a href="people" th:href="@{/web/people}">People</a></li> -->
                             <li><a href="publication" th:href="@{/web/publication}">Publication</a></li>
                             <li><a href="about" th:href="@{/web/about}">About</a></li>
                             <li>
-		                    	<a  th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="#" >Welcome, Friend</a>
-		                    	<a  th:unless="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="user_profile" th:href="@{/web/user_profile}"  th:text="'Welcome, '+${session.sessionUser}" >Welcome, Friend</a>
+		                    	<a  th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="#" >Welcome</a>
+		                    	<a  th:unless="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="user_profile" th:href="@{/web/user_profile}"  th:text="'Welcome, '+${session.sessionUser}" >Welcome</a>
 		                   	</li>
 		                    <li>
 		                    	<a th:if="${session.sessionUser == null}  or ${session.sessionUser} eq 'Friend'"  href="login" th:href="@{/web/login}" >Login</a>
diff --git a/src/edu/gmu/csiss/earthcube/cyberconnector/user/UserTool.java b/src/edu/gmu/csiss/earthcube/cyberconnector/user/UserTool.java
index 444bb56..ec3c8ac 100644
--- a/src/edu/gmu/csiss/earthcube/cyberconnector/user/UserTool.java
+++ b/src/edu/gmu/csiss/earthcube/cyberconnector/user/UserTool.java
@@ -24,6 +24,7 @@
 import edu.gmu.csiss.earthcube.cyberconnector.services.Service;
 import edu.gmu.csiss.earthcube.cyberconnector.utils.BaseTool;
 import edu.gmu.csiss.earthcube.cyberconnector.utils.Message;
+import edu.gmu.csiss.earthcube.cyberconnector.utils.SysDir;
 
 /**
 *Class UserTool.java
@@ -487,8 +488,41 @@ public static String get_SHA_512_SecurePassword(String passwordToHash, String sa
 	    return generatedPassword;
 	}
 	
+	/**
+	 * Check if the user exists in the white list
+	 * @param email
+	 * @return
+	 */
+	public static boolean checkWhiteList(String email) {
+		
+		boolean allowed = false;
+		
+		for(int i=0;i<SysDir.whiteusers.size();i++) {
+			
+			if(email.equals(SysDir.whiteusers.get(i))) {
+				
+				allowed = true;
+				
+				break;
+				
+			}
+			
+		}
+		
+		return allowed;
+		
+	}
+	
 	public static Message registerNewUser(User user){
 		
+		if(!checkWhiteList(user.getEmail())) {
+			
+			Message msg = new Message("configuration", "user_login", "the email is not allowed for registration", false );
+			
+			return msg;
+			
+		}
+		
 		BaseTool tool = new BaseTool();
 		
 		Message msg = null;
@@ -630,7 +664,9 @@ public static void passwordResetEmail(User user) {
 		t.setExpireDate(timestamp.getTime()+5*60*1000);
 		
 		String emailContent = "Please click the following link to reset password of your CyberConnector account. To ensure your account safety, do NOT share or let other people get this email. The link will be expired in 5 minutes.";
-		emailContent += "\nhttp://localhost:8081/CyberConnector/web/user_setpassword?token=" + t.getToken();
+		emailContent += "\n"+SysDir.PREFIXURL+"/CyberConnector/web/user_setpassword?token=" + t.getToken();
+		
+		logger.info(emailContent);
 		
 		BaseTool tool = new BaseTool();
 		
diff --git a/src/edu/gmu/csiss/earthcube/cyberconnector/utils/SysDir.java b/src/edu/gmu/csiss/earthcube/cyberconnector/utils/SysDir.java
index 001a8a4..8d76725 100644
--- a/src/edu/gmu/csiss/earthcube/cyberconnector/utils/SysDir.java
+++ b/src/edu/gmu/csiss/earthcube/cyberconnector/utils/SysDir.java
@@ -3,6 +3,8 @@
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Properties;
 
 /**
@@ -69,6 +71,8 @@ public class SysDir {
 	
 	public static boolean login_required = false;
 	
+	public static List whiteusers = new ArrayList();
+	
 	public static String getCovali_file_path() {
 		
 		init();
@@ -98,11 +102,14 @@ static void init() {
 		try {
 			
 			BaseTool t = new BaseTool();
+			
 			String configFile = t.getClassPath()+File.separator+"config.properties";
 			
 			Properties p = readProperties(configFile);
 
 			String secretConfigFile = p.getProperty("secret_properties_path");
+			
+			
 
 			Properties secrets = null;
 			
@@ -174,6 +181,26 @@ static void init() {
 
 			ucar_rda_password = secrets.getProperty("ucar_rda_password");
 			
+			String whitelist = t.readStringFromFile(t.getClassPath()+File.separator+"whitelist.user");
+			
+			if(!t.isNull(whitelist.trim())) {
+			
+				String[] emails = whitelist.trim().split("\n");
+				
+				for(String email: emails) {
+					
+					email = email.trim();
+					
+					if(!t.isNull(email)) {
+						
+						whiteusers.add(email);
+						
+					}
+					
+				}
+				
+			}
+			
 		} catch (Exception e) {
 			
 			e.printStackTrace();
diff --git a/src/whitelist.user b/src/whitelist.user
new file mode 100644
index 0000000..76cd3c3
--- /dev/null
+++ b/src/whitelist.user
@@ -0,0 +1,3 @@
+zsun@gmu.edu
+bcash@gmu.edu
+dwakefi2@gmu.edu
\ No newline at end of file
diff --git a/sync.ffs_db b/sync.ffs_db
index 0aa8e07..e1b8c4e 100644
Binary files a/sync.ffs_db and b/sync.ffs_db differ