diff --git a/app/models.py b/app/models.py
index 6282262..108448c 100644
--- a/app/models.py
+++ b/app/models.py
@@ -188,7 +188,7 @@ class User(db.Model):
             logging.error(e)
             raise
 
-    def is_validate(self, method):
+    def is_validate(self, method, src_ip=''):
         """
         Validate user credential
         """
@@ -197,12 +197,12 @@ class User(db.Model):
 
             if user_info:
                 if user_info.password and self.check_password(user_info.password):
-                    logging.info('User "{0}" logged in successfully'.format(self.username))
+                    logging.info('User "{0}" logged in successfully. Authentication request from {1}'.format(self.username, src_ip))
                     return True
-                logging.error('User "{0}" input a wrong password'.format(self.username))
+                logging.error('User "{0}" inputted a wrong password. Authentication request from {1}'.format(self.username, src_ip))
                 return False
 
-            logging.warning('User "{0}" does not exist'.format(self.username))
+            logging.warning('User "{0}" does not exist. Authentication request from {1}'.format(self.username, src_ip))
             return False
 
         if method == 'LDAP':
@@ -220,7 +220,7 @@ class User(db.Model):
 
             result = self.ldap_search(searchFilter, LDAP_SEARCH_BASE)
             if not result:
-                logging.warning('LDAP User "{0}" does not exist'.format(self.username))
+                logging.warning('LDAP User "{0}" does not exist. Authentication request from {1}'.format(self.username, src_ip))
                 return False
 
             try:
@@ -242,11 +242,13 @@ class User(db.Model):
                             logging.error('User {0} is not part of the "{1}" or "{2}" groups that allow access to PowerDNS-Admin'.format(self.username,LDAP_ADMIN_GROUP,LDAP_USER_GROUP))
                             return False
                     except Exception as e:
-                        logging.error('LDAP group lookup for user "{0}" has failed'.format(e))
+                        logging.error('LDAP group lookup for user "{0}" has failed. Authentication request from {1}'.format(self.username, src_ip))
+                        logging.debug(e)
                         return False
                     logging.info('User "{0}" logged in successfully'.format(self.username))
             except Exception as e:
-                logging.error('User "{0}" input a wrong LDAP password'.format(e))
+                logging.error('User "{0}" input a wrong LDAP password. Authentication request from {1}'.format(self.username, src_ip))
+                logging.debug(e)
                 return False
 
             # create user if not exist in the db
diff --git a/app/views.py b/app/views.py
index b5a4427..d011a5d 100644
--- a/app/views.py
+++ b/app/views.py
@@ -120,7 +120,7 @@ def login_via_authorization_header(request):
             return None
         user = User(username=username, password=password, plain_text_password=password)
         try:
-            auth = user.is_validate(method='LOCAL')
+            auth = user.is_validate(method='LOCAL', src_ip=request.remote_addr)
             if auth == False:
                 return None
             else:
@@ -340,7 +340,7 @@ def login():
         user = User(username=username, password=password, plain_text_password=password)
 
         try:
-            auth = user.is_validate(method=auth_method)
+            auth = user.is_validate(method=auth_method, src_ip=request.remote_addr)
             if auth == False:
                 return render_template('login.html', error='Invalid credentials',
                                                      github_enabled=GITHUB_ENABLE,