We have two small changes to our evaluation guide series to announce (with many more coming soon).
Our core XMPP Messaging Evaluation Guide, using our M-Link XMPP server and M-Vault LDAP directory, now includes a section on adding a Security Policy to your XMPP service. In this new section we show you how to add a the policy to your service and clearances to your users. You can additionally apply label based controls to multi-user chat, domains and peer services (all of which and more is covered in the M-Link Admin Guide).
The Security Policy we use in the evaluation guide is one of the demonstration policies we ship with M-Link but, if you want to create your own, contact us about evaluating our SPIF Editor. SPIF (Security Policy Information File) is a file representation of a Security Policy, in other words the definition of which labels are valid and how to check them against clearances.