Queuing (LLQ) diterapkan pada router cisco. Pada penelitian ini, algoritma Low Latency. Dalam penerapannya, VoIP mengalami permasalahan karena menggunakan teknologi packet switching yang mana penggunaannya bersamaan dengan paket data sehingga timbul delay, jitter, dan packet loss. Voice over IP (VoIP) adalah solusi komunikasi suara yang murah karena menggunakan jaringan IP dibanding penggunaan telephone analog yang banyak memakan biaya. It is obvious that our proposed method can provide the security and prohibit the attackers to attack the network.
The performance in terms of delay, bandwidth consumption, jitter and the data rate of the proposed method with and without Firewalls is analyzed.
The encryption of data packets when information is transferred between different sites is tested and verified using tools like Ping, IPerf and Wireshark. The implementation of IPsec VPN is done with security protocols for exchanging key management, authentication and integrity using Graphical Network Simulator 3 (GNS3). In this paper, we discuss about site-to-site IPsec VPN which communicate in the intra-nets. Hence, there is a need to provide security to SIP based VOIP implementations, especially, a remotely secure communication using Virtual Private Networks (VPN). Due to its open architecture, the available services are vulnerable to various kinds of security threats like presently live on the Internet.
SIP is the special protocol for present and future IP telephony services which is turning as real challenger for traditional telephony services. Over the past decades, Session Initiation Protocol (SIP) has achieved much attention regarding Voice over IP services(VOIP) when comparing with various protocols like H.323 or MGCP.
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