Survey of real-time multimedia security mechanisms

In the beginning, this paper describes basic overview of attacks on TCP/IP stack in general. In the next section, there is overview of security of signalization and description of techniques used to secure signalization in multimedia communication. Then, there are described techniques of multimedia security. The last part of the paper deals with a Public key infrastructure (PKI) and aspects of its deployment. This paper is focused on real-time communication based on SIP signalization protocol.