As more applications have been moving to an IP network the security becomes a concern. Especially with the introduction of managed and hosted unified communications services with voice and video IP traffic on service provider network, the secure transport faces new challenges of the open and untrusted network.

In this article, Tilen Mlakar, CCNP/CCSI and Instructor at NIL Data Communications, focuses primarily on security measures of the unified communications traffic, network components and end points where the applications or their parts reside.