No description available.

Thesis (M.S. in Computer Science)--Naval Postgraduate School, September 2003. / Thesis advisor(s): Bert Lundy, R. Scott Coté. Includes bibliographical references (p. 77-78). Also available online.

Thesis (M.S. in Information Systems and Operations)--Naval Postgraduate School, June 2003. / Thesis advisor(s): Dan C. Boger, Rex Buddenberg. Includes bibliographical references (p. 61-62). Also available online.

Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, September 2002. / Thesis advisor(s):Dan Boger, Rex Buddenberg. Includes bibliographical references (p. 101-102). Also available online.

Thesis (M.S. in Computer Science)--Naval Postgraduate School, September 2005. / Thesis Advisor(s): Cynthia E. Irvine, Thuy D. Nguyen. Includes bibliographical references (p. 179-180). Also available online.

Thesis (M.S.S.I.S.)--Regis University, Denver, Colo., 2006. / Title from PDF title page (viewed on Nov. 30, 2006). Includes bibliographical references.

No description available.

<p>At the moment the demand for IP Telephony is increasing because of its scalability and efficient use of bandwidth. The main issues are security and quality of voice in IP Telephony .The study comprises previous research papers and, on the bases of those papers, comparison is made between two security techniques, IPSec VPN and MPLS VPN. The goal behind this study is to build an IP Telephony setup, with security for private branch network, which is an ISP. IP Telephony networks are currently facing issues regarding security and competent packet switching. </p><p>The comparison further describes that MPLS VPN technique is more scalable and efficient than IPSec VPN, which has been approved in implementation. In the implementation, one centralized call manager is configured to establish calls between different sites. To secure traffic over the internet which travels from one site to another other site, MPLS VPN is configured in MPLS domain. In order to increase the performance of IP Telephony, quality of service (QoS) is implemented. QoS provides thriving outcomes and it is also practically implemented in the lab. QoS enhances the flow of data by prioritizing the voice packets. At the end, it is concluded that MPLS VPN is more efficient and scalable than IPSec VPN, and shows better results, while completely supporting QoS.</p>

At the moment the demand for IP Telephony is increasing because of its scalability and efficient use of bandwidth. The main issues are security and quality of voice in IP Telephony .The study comprises previous research papers and, on the bases of those papers, comparison is made between two security techniques, IPSec VPN and MPLS VPN. The goal behind this study is to build an IP Telephony setup, with security for private branch network, which is an ISP. IP Telephony networks are currently facing issues regarding security and competent packet switching. The comparison further describes that MPLS VPN technique is more scalable and efficient than IPSec VPN, which has been approved in implementation. In the implementation, one centralized call manager is configured to establish calls between different sites. To secure traffic over the internet which travels from one site to another other site, MPLS VPN is configured in MPLS domain. In order to increase the performance of IP Telephony, quality of service (QoS) is implemented. QoS provides thriving outcomes and it is also practically implemented in the lab. QoS enhances the flow of data by prioritizing the voice packets. At the end, it is concluded that MPLS VPN is more efficient and scalable than IPSec VPN, and shows better results, while completely supporting QoS.

Voice over Internet Protocol (VoIP) is becoming popular due to its low cost and the management advantages it offers over traditional PSTN phone systems. VoIP is widely implemented with H.323 and Session Initiation Protocol (SIP) standards. However, both protocols are poorly designed for networks with common security solutions such as firewalls and Network Address Translation (NAT). This project is a feasibility study of SIP-based VoIP integration into the Monterey Security Architecture (MYSEA), a multilevel secure environment that uses NAT as a security mechanism. A gathering of comparative studies on VoIP protocols was performed to guide the selection of SIP as the test protocol. A set of experiments was devised and conducted using SIPbased softphones for this study. The insights gained from the experiment provide useful insights to the MYSEA project concerning VoIP security.