Two Stage Secure Dynamic Load Balancing Architecture for SIP Server Clusters

Abstract

Session Initiation Protocol (SIP) is a signaling protocol emerged with an aim to enhance the IP network capabilities in terms of complex service provision. SIP server scalability with load balancing has a greater concern due to the dramatic increase in SIP service demand. Load balancing of session method (request/response) and security measures optimizes the SIP server to regulate of network traffic in Voice over Internet Protocol (VoIP). Establishing a honeywall prior to the load balancer significantly reduces SIP traffic and drops inbound malicious load. In this paper, we propose Active Least Call in SIP Server (ALC_Server) algorithm fulfills objectives like congestion avoidance, improved response times, throughput, resource utilization, reducing server faults, scalability and protection of SIP call from DoS attacks. From the test bed, the proposed two-tier architecture demonstrates that the ALC_Server method dynamically controls the overload and provides robust security, uniform load distribution for SIP servers.

A Secured Load Mitigation and Distribution Scheme for Securing SIP Server

“…Thus, only the authenticated users can send jobs and no overload occurs within the cloud platform and the load balancer pays minimum resource wastage. In the previous work [34], the honeywall is a major contribution for reducing the load towards the load balancer. The SIP server is configured to make a decision to select the server with the least number of active calls and BYE ACK method.…”