Title :
Performance evaluation of Diffserv enabled NAT
Author :
Guha, Dibyajyoti ; Pathak, S.S.
Author_Institution :
G.S. Sanyal Sch. of Telecommun., Indian Inst. of Technol., Kharagpur, Kharagpur, India
Abstract :
In this paper we discuss evaluating performance of Network edge device like DiffServ enabled Network Address Translator or Session Border Controller for protecting cluster of VoIP servers. Incoming connections coming from outside to VoIP cluster is terminated at NAT for the purpose of enforcing security policies and connection mapping to identify the ongoing session and new session. We have taken a further step to equip the NAT with Quality of Service policy in order to make NAT as a application aware gateway or Session Border Controller. The performance is evaluated by considering the NAT buffer as a Vacational Queueing model. Mean queue length, and sojourn time analysis is made here.
Keywords :
Internet telephony; computer network performance evaluation; computer network security; internetworking; quality of service; DiffServ enabled network address translator; Diffserv enabled NAT performance evaluation; NAT buffer; VoIP server cluster protection; connection mapping; mean queue length; network edge device; quality of service policy; security policies; session border controller; sojourn time analysis; vacational queueing model; Computers; IP networks; Internet; Logic gates; Quality of service; Servers; Virtual private networks;
Conference_Titel :
Computer and Communication Technology (ICCCT), 2011 2nd International Conference on
Conference_Location :
Allahabad
Print_ISBN :
978-1-4577-1385-9
DOI :
10.1109/ICCCT.2011.6075101
