The Internet has revolutionized the telecommunication systems by supporting new
applications and services. Voice over Internet Protocol (VoIP) is one of the most prominent …

Voice over IP (VoIP), also known as Internet telephony, is gaining market share rapidly and
now competes favorably as one of the visible applications of the Internet. Nevertheless …

In this article we address the issue of denial of service attacks targeting the hardware and
software of voice over IP servers or by misusing specific signaling protocol features. As a …

As ISPs face IPv4 address scarcity they increasingly turn to network address translation
(NAT) to accommodate the address needs of their customers. Recently, ISPs have moved …

SIP (Session Initiation Protocol), using HTML based call control messaging which is quite
simple and efficient, is being replaced for VoIP networks recently. As for authentication and …

Session Initiation Protocol (SIP) has been widely used in current Internet protocols such as
Hyper Text Transport Protocol (HTTP) and Simple Mail Transport Protocol (SMTP). SIP is a …

Being a fast-growing Internet application, Voice over Internet Protocol (VoIP) shares the
network resources with the regular Internet traffic, and is susceptible to the existing security …

We introduce a novel SIP based attack, named as the SR-DRDoS attack, that exploits some
less known SIP features by using the IP-spoofing technique, the reflection based attack logic …

VoIP is becoming a low-priced and efficient replacement for PSTN in communication
industries. With a widely growing adoption rate, session initiation protocol (SIP) is an …

Although people think that their identity is not revealed on the internet, the confidentiality and
protection of personal information on unreliable networks such as the internet is an …