NDLI: SIP server security with TLS: Relative performance evaluation

Content Provider	IEEE Xplore Digital Library
Author	Kulin, M. Kazaz, T. Mrdovic, S.
Copyright Year	2012
Description	Author affiliation: Faculty of Electrical Engineering, University of Sarajevo, Bosnia and Herzegovina (Kulin, M.; Kazaz, T.; Mrdovic, S.)
Abstract	VoIP (Voice over Internet) provides delivery of voice information over unsecured IP-based networks like the Internet. VoIP data, signaling and voice, needs to be secured in such an environment. Security mechanisms take their toll on VoIP system performance. SIP is dominant signaling protocol for VoIP. This paper measures relative decrease in VoIP performance of system with secured SIP signaling over one without it. It compares SIP with authentication enabled over three transport protocols: UDP, TCP and TLS. Peak throughput of concurrent calls, registration request delay, session request delay, SIP server CPU and RAM usage are measured. Testbed environment consists of Asterisk IP private branch exchange (PBX) as a part of Elastix server, several SIP user agents and SIPp traffic generator. Test results show that performance of SIP over TLS based signaling is four times lower than the SIP signaling over UDP in most metrics.
Starting Page	1
Ending Page	6
File Size	1658325
Page Count	6
File Format	PDF
ISBN	9781467348751
e-ISBN	9781467348768
e-ISBN	9781467348744
DOI	10.1109/BIHTEL.2012.6412062
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-25
Publisher Place	Bosnia and Herzegovina
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transport protocols IP PBX Random access memory VoIP Servers Elastix Delay SIPp Authentication Performance testing TLS Asterisk Testing SIPS
Content Type	Text
Resource Type	Article

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