diff --git a/gluon/contrib/login_methods/cas_auth.py b/gluon/contrib/login_methods/cas_auth.py
index 1a07c5f1..73be8ae1 100644
--- a/gluon/contrib/login_methods/cas_auth.py
+++ b/gluon/contrib/login_methods/cas_auth.py
@@ -49,7 +49,8 @@ class CasAuth(object):
                            email=lambda v: v.get('email', None),
                            user_id=lambda v: v['user']),
                  casversion=1,
-                 casusername='cas:user'
+                 casusername='cas:user',
+		 change_password_url=None
                  ):
         self.urlbase = urlbase
         self.cas_login_url = "%s/%s" % (self.urlbase, actions[0])
@@ -64,6 +65,9 @@ class CasAuth(object):
                               #vars=current.request.vars,
                               scheme=True)
 
+	# URL to let users change their password in the IDP system
+        self.cas_change_password_url = change_password_url
+
     def login_url(self, next="/"):
         current.session.token = self._CAS_login()
         return next
@@ -74,6 +78,10 @@ class CasAuth(object):
         self._CAS_logout()
         return next
 
+    def change_password_url(self, next="/"):
+        self._CAS_change_password()
+        return next
+
     def get_user(self):
         user = current.session.token
         if user:
@@ -135,3 +143,6 @@ class CasAuth(object):
         redirects to the CAS logout page
         """
         redirect("%s?service=%s" % (self.cas_logout_url, self.cas_my_url))
+
+    def _CAS_change_password(self):
+        redirect(self.cas_change_password_url)
diff --git a/gluon/contrib/login_methods/saml2_auth.py b/gluon/contrib/login_methods/saml2_auth.py
index 42fe24db..462d9845 100644
--- a/gluon/contrib/login_methods/saml2_auth.py
+++ b/gluon/contrib/login_methods/saml2_auth.py
@@ -145,10 +145,16 @@ class Saml2Auth(object):
             username=lambda v:v['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn'][0],
             email=lambda v:v['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn'][0],
             user_id=lambda v:v['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn'][0],
-            )):
+            ), logout_url=None, change_password_url=None):
         self.config_file = config_file
         self.maps = maps
 
+	# URL for redirecting users to when they sign out
+        self.saml_logout_url = logout_url
+
+        # URL to let users change their password in the IDP system
+        self.saml_change_password_url = change_password_url
+
     def login_url(self, next="/"):
         d = saml2_handler(current.session, current.request)
         if 'url' in d:
@@ -170,6 +176,12 @@ class Saml2Auth(object):
 
     def logout_url(self, next="/"):
         current.session.saml2_info = None
+        current.session.auth = None
+        self._SAML_logout()
+        return next
+
+    def change_password_url(self, next="/"):
+        self._SAML_change_password()
         return next
 
     def get_user(self):        
@@ -180,3 +192,13 @@ class Saml2Auth(object):
                 d[key] = self.maps[key](user)
             return d
         return None
+
+    def _SAML_logout(self):
+        """
+        exposed SAML.logout()
+        redirects to the SAML logout page
+        """
+        redirect(self.saml_logout_url)
+
+    def _SAML_change_password(self):
+        redirect(self.saml_change_password_url)
diff --git a/gluon/tools.py b/gluon/tools.py
index 4b34be77..a4b28aa0 100644
--- a/gluon/tools.py
+++ b/gluon/tools.py
@@ -3663,6 +3663,16 @@ class Auth(AuthAPI):
         if not self.is_logged_in():
             redirect(self.settings.login_url,
                      client_side=self.settings.client_side)
+
+        # Go to external link to change the password
+        if self.settings.login_form != self:
+            cas = self.settings.login_form
+            # To prevent error if change_password_url function is not defined in alternate login
+            if hasattr(cas, 'change_password_url'):
+                next = cas.change_password_url(next)
+                if next is not None:
+                    redirect(next)
+
         db = self.db
         table_user = self.table_user()
         s = db(table_user.id == self.user.id)