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Communication networks can be the targets of organized and distributed attacks such as flooding-type DDOS attack in which malicious users aim to cripple a network server or a network domain. For the attack to have a major effect on the network, malicious users must act in a coordinated and time correlated manner. For instance, the members of the flooding attack increase their message transmission...
SIP is amongst the most popular Voice over IP signaling protocols. Its deployment in live scenarios showed its vulnerability to flooding attacks. In this paper, we present a SIP flooding attack detection mechanism that dynamically detects SIP flooding attacks and correlates in real time the temporal characteristics of SIP reliable mechanism and the number of received INVITE requests. Experimental...
SIP-based Voice Over IP(VoIP) network is becoming predominant in current and future communications. Distributed Denial of service attacks pose a serious threat to VOIP network security. SIP servers are victims of DDos attacks. The major aim of the DDos attacks is to avoid legitimate users to access resources of SIP servers. Distributed Denial of service attacks target the VOIP network by deploying...
VoIP is technology for transmitting voice and data over IP for communication. It has various benefits such as, voice messaging, calling, video messaging as well as video conferencing with file sharing. VoIP is better than Public Switched Telephone Network (PSTN) and cellular network. We can see all the services in VoIP based application such as Skype, Google talk. Due to the file sharing and information...
A finite state machine contains a finite number of states and produces outputs on state transitions after receiving inputs. Finite state machines are widely used to model systems in diverse areas, including sequential circuits, certain types of programs, and, more recently, communication protocols. The denial of service (DoS) attacks are the hackneyed and evil cyberattacks in the IP which can be easily...
The Session Initiation Protocol (SIP) has been widely used in VoIP for session control and management. As the basic SIP specifications do not require the proxy servers to track the states of established sessions, an extension header field "Session-Expires" has been proposed for SIP to allow the proxy server to hold resources for established sessions just within the specified periods. In...
The functional and cost advantages of Internet telephony are evident. By today's technical standards, however, Voice Over IP (VOIP) is still less secure than traditional telephony. At the same time, the hacker scene is constantly looking for new weak spots and developing ingenious methods of attack to gain access to confidential information and penetrate further into the network. One of the most security...
Research, Development and Evaluation Commission once hold an Internet election of “Top Ten Complaints”, the result showed that the overabundance of phone and Internet fraud was included. This result represents that the phone and Internet fraud trouble people a lot. Thus, this paper will first discuss the analysis of the crime mode of phone and Internet fraud and the collect the security threats of...
Through deeply analysis of INVITE flooding attack of SIP based VoIP system, a novel VoIP flooding detection scheme called CDVFD (Call Duration based VoIP Flooding Detection) is presented. The CDVFD method makes use of SIP signaling bidirectional interaction, and it can make fast detection using Chi-square value, and can distinguish from normal high VoIP traffic. Experimental results show the effectiveness...
Voice-over-IP (VoIP)-based services are becoming a popular alternative to traditional public switched telephony. The increasing number of users make VoIP also an interesting target for attackers. VoIP phishing and identity theft are gaining relevance. The lack of options for the reliable authentication between communication partners and the possibilities for anonymisation in IP-based telephony will...
The Voice over IP (VoIP) application utilizes the Internet to provide voice service; thus it is susceptible to various security issues common on the IP networks, such as the flooding attack. Moreover, VoIP uses the Session Initiation Protocol (SIP) for session control and management. The transactional nature of SIP makes flooding attack an even severer threat, which can consequentially lead to denial...
The multimedia communication is rapidly converging towards Voice over Internet - commonly known as Voice over Internet Protocol (VoIP). Session Initiation Protocol (SIP) is the standard used for session signaling in VoIP. Crafty attackers can launch a number of Denial of Service (DoS) attacks on a SIP based VoIP infrastructure that can severely compromise its reliability. In contrast, little work...
In this study, we discussed with the protocol of SIP of VoIP. At first, using NS2 simulation software to analysis, then we researched those entities. Because of the impact of VoIP Quality of Service (QoS) as a major factor is the rate of packet loss. And of the human beings, the discontinuous voice caused by a small amount of packet loss can be tolerated. By using actual VoIP equipment, we observing...
This study is focus on SIP of VoIP, and simulated and analysed by NS2. In addition, because of the security issues are the main factor to affect its popularization, and the DDOS attack has become one of the more serious issues in VoIP network security domain. Therefore this research carries on the simulation analysis to various types attack by NS2, and further discusses under the DDoS attack between...
The SIP-based VoIP system is build on the IP network, so it is affected by the IP network security problem. SIP-based VoIP system has many security problems because of the security mechanism of VoIP system and other external factors. These effects relate to the following three aspects: confidentiality, integrity and availability. This paper analyzed the mechanism of VoIP system and the components...
Internet is vulnerable to overloading caused by flash crowds and distributed denial-of-service (DDoS) attacks. Recently voice over IP (VoIP), an Internet-based service is experiencing a phenomenal growth. As its deployment spreads, VoIP systems are likely to become attack targets, of which flooding lists high, perhaps due to its simplicity and the abundance of tool support. The DDoS attacks and flash...
Voice over Internet Protocol (VoIP) is the newest and the fastest growing technology which consists of routing voice conversations over IP-based network. The flexibility of the VoIP system and the convergence of voice and data networks brings with it additional security requirements, VoIP availability is the most important one. Denial-of-service (DoS) attacks are the main concerns with regard to causing...
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