نتایج جستجو برای: امنیت voip sip h323 spit
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پروتکل sip به عنوان پروتکل اصلی لایه کنترل در شبکه های نسل آینده و کاربردهای چند رسانه ای نظیر ویدئو کنفرانس، تلویزیون و تلفن اینترنتی (voip) مطرح شده است. اصلی ترین حملات موجود در voip با عنوان حملات سیل آسا شناخته می شوند که بیش از 98 درصد آن ها به علت مشکلات پیاده سازی و پیکربندی و کمتر از دو درصد آسیب پذیری های مربوطه به علت ضعف پروتکل به وقوع می پیوندند. در این مقاله یک مجموعه ویژگی برای ت...
The mechanisms which enable the vast majority of computer attacks are based on design and programming errors in networked applications. The growing use of voice over IP (VOIP) phone technology makes these phone applications potential targets. We present a tool to perform security testing of VOIP applications to identify security vulnerabilities which can be exploited by an attacker. Session Ini...
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...
Over the last years Voice-over-IP (VoIP) is getting widespread adoption from business and residential customers.The preference towards VoIP services stems from the fact that VoIP provides many ways to communicate, with a lower cost than traditional telephony. However, VoIP in its present form may allow malicious users to exploit a number of vulnerabilities, make bulk unsolicited telephony calls...
Wireless networks and the voice over Internet protocol (VoIP) have recently been widely adapted. VoIP services over Ad-hoc network can be accomplished by middleware embedded in mobile devices. In this study, we have implemented an intelligent VoIP system with embedded pseudo session initiation protocol (SIP) server in an Ad-hoc network. We employed the standard SIP protocol and integrated SIP p...
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...
Voice over IP (VoIP) services have become prevalent lately because of their potential advantages such as economic efficiency and useful features. Meanwhile, Session Initiation Protocol (SIP) is being widely used as a session protocol for the VoIP services. Many mobile VoIP applications have recently been launched, and they are becoming attractive targets for attackers to steal private informati...
Voice communications on IP networks use owner protocols as well as standards like SIP, MGCP and H323. In this paper we propose a new method for transparent traversal of NATed (Network Address Translated) networks for the SIP (Session Initiation Protocol) protocol. Although SIP is an application layer protocol, its operation is affected by address translation. This is because SIP uses network la...
Spam over Internet Telephony (SPIT) is a threat to the use of Voice of IP (VoIP) systems. One kind of SPIT can make unsolicited bulk calls to victims’ voice mailboxes and then send them a prepared audio message. We detect this threat within a collaborative detection framework by comparing unknown VoIP flows with known SPIT samples since the same audio message generates VoIP flows with the same ...
In recent years Voice over Internet Protocol (VoIP) has become a popular multimedia application over the Internet. At the same time critical security issues in VoIP have started to emerge. The Session Initiation Protocol (SIP) is a predominant signalling protocol for VoIP. It is used to establish, maintain and terminate VoIP calls, playing a crucial role in VoIP. This paper is aimed at developi...
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