Comparative Analysis of VPN Protocols at Layer 2 Focusing on Voice Over Internet Protocol

Voice over Internet Protocols (VoIP) is an IP-based communication technology or commonly known as (IP). In which, IP currently widely used for mobile activities. However, the main concern in application of VoIP system ability to maintain information confidentiality while guaranteeing protection its primary users. For this reason, it requires do addition Virtual Private Network (VPN) features. Conceptually, aims create connection lines secret by utilizing internal network structure (intranet) and be accessed remotely using tunneling protocols security system. The purpose research compare Quality Service (QoS) on several protocols. Moreover, conducted also analyze mechanisms including Delay, Jitter, Throughput Packet Loss. This analyzation determining best quality some piloted Furthermore, work compares methods voice-call-testing term Generic Routing Encapsulation with IPSecurity (GRE+IPSec), Protocol based Session Initiation (IPIP+SIP-based), Secure Socket Layer (SSL), 2 Tunneling (L2TP+IPSec). Accordingly, comparative results show better performance compared existing work, which proven proposed method provide ITU-T.G.1010.