Evaluation of Quality and Security of a VoIP Network based on Asterisk and OpenVPN

The proposed work is to verify the performance and security of different cryptographic algorithms in a encrypted VPN (Virtual Private Network), created to provide confidentiality in the network VoIP traffic. The performance tests of the algorithms will occur in various network scenarios, simulating some problems like latency, packet loss, out of order packets, among others. The test architecture consists of: use of the SIPp software for communication between clients, an Asterisk server to intermediate the calls and the OpenVPN software, which will be responsible to create the virtual private network and provide the cryptography neces-