[release-notes] adding content from gssproxy feature page

[Pete Travis]

commit eaf86ba259a4e738c99e0b9e9f21f4209f69a2a8
Author: Pete Travis <immanetize at fedoraproject.org>
Date:   Sun May 12 20:34:13 2013 -0600

    adding content from gssproxy feature page

 en-US/Security.xml |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/en-US/Security.xml b/en-US/Security.xml
index 6771809..4cc29f9 100644
--- a/en-US/Security.xml
+++ b/en-US/Security.xml
@@ -88,6 +88,13 @@
       Various <application>kerberos</application> bugs have been fixed, including handling of reverse DNS records, have been fixed in order to make a more seamless <application>kerberos</application> experience.
     </para>
   </section>
+
+  <section>
+    <title>gssproxy</title>
+    <para>
+      Fedora &PRODVER; features <package>gssproxy</package>, an opensource project that aims to improve <function>GSSAPI</function> usage from both the kernel for authenticating remote file system access as well as user-space applications. It does provide fine-grained access control on <application>Kerberos</application> keytab access and it overcomes various limitations the kernel had when dealing with Kerberos tickets.
+    </para>
+  </section>
 </section>