diff --git a/doc/user-guide/section_dashboard_access_and_security.xml b/doc/user-guide/section_dashboard_access_and_security.xml
index 1ec7ca5794..42b978ad48 100644
--- a/doc/user-guide/section_dashboard_access_and_security.xml
+++ b/doc/user-guide/section_dashboard_access_and_security.xml
@@ -39,10 +39,15 @@
             project, and should be set for every project unless there
             is a reason to prohibit SSH or ICMP access to the
             instances.</para>
+
         <para>This procedure can be adjusted as necessary to add
             additional security group rules to a project, if your
             cloud requires them.</para>
         <procedure>
+          <note>
+            <para>When adding a rule, you must specify the protocol used
+              with the destination port or source port.</para>
+          </note>
             <step>
                 <para>Log in to the dashboard, choose a project, and
                     click <guilabel>Access &amp; Security</guilabel>.