Ahmad Akbari
Ahmad Akbari is an associate professor in the computer engineering school of Iran University of Science and Technology, Tehran, Iran (email: [email protected])
[ 1 ] - Detecting Denial of Service Message Flooding Attacks in SIP based Services
Increasing the popularity of SIP based services (VoIP, IPTV, IMS infrastructure) lead to concerns about its security. The main signaling protocol of next generation networks and VoIP systems is Session Initiation Protocol (SIP). Inherent vulnerabilities of SIP, misconfiguration of its related components and also its implementation deficiencies cause some security concerns in SIP based infra...
[ 2 ] - Developing Fuzzy Models for Estimating the Quality of VoIP
This paper presents a novel method for modeling the one-way quality prediction of VoIP, non-intrusively. Intrusive measures of voice quality suffer from common deficiency that is the need of reference signal for evaluating the quality of voice. Owing to this lack, a great deal of effort has been recently devoted for modeling voice quality prediction non-intrusively according to quality degradat...
[ 3 ] - مهندسی مجموعه ویژگی برای تشخیص حملات سیلآسا در VoIP مبتنی بر SIP
پروتکل SIP به عنوان پروتکل اصلی لایه کنترل در شبکههای نسل آینده و کاربردهای چند رسانهای نظیر ویدئو کنفرانس، تلویزیون و تلفن اینترنتی (VoIP) مطرح شده است. اصلیترین حملات موجود در VoIP با عنوان حملات سیلآسا شناخته میشوند که بیش از 98 درصد آنها به علت مشکلات پیادهسازی و پیکربندی و کمتر از دو درصد آسیبپذیریهای مربوطه به علت ضعف پروتکل به وقوع میپیوندند. در این مقاله یک مجموعه ویژگی برای ت...
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