Today, Internet offers many critical applications. So, it becomes very crucial for Internet service providers to ensure traceability of operations and to secure data exchange. Since all these communications are based on the use of the Domain Name System (DNS) protocol, it becomes necessary to think to enhance and secure it by proposing a secure version of this protocol that can correct the whol...

This memo presents operational considerations and issues with IPv6 Domain Name System (DNS), including a summary of special IPv6 addresses, documentation of known DNS implementation misbehavior, recommendations and considerations on how to perform DNS naming for service provisioning and for DNS resolver IPv6 support, considerations for DNS updates for both the forward and reverse trees, and mis...

vi CHAPTER 1. GENERAL INTRODUCTION 1 1.1 Problem Statement 1 1.2 Thesis Organization 1 1.3 Overview of Network Covert Channels 2 1.4 Overview of Information Hiding in TCP/IP 3 1.5 Network Layer 5 1.5.1 Do not Fragment Bit 5 1.5.2 IP Identification Field 6 1.5.3 IP Header Checksum 6 1.5.4 ICMP Data 6 1.6 Transport Layer 7 1.6.1 TCP Time Stamps 7 1.6.2 Sequence and Acknowledgment Fields 9 1.7 Act...

background: more than 20% of deaths from traffic crashes are related to pedestrians. this figure in tehran, the capital of iran, reaches to 40%. this study aimed to determine the high-risk areas and spatially analyze the traffic crashes, causing death to pedestrians in tehran.   methods: mapping was used to display the distribution of the crashes. determining the distribution pattern of crashes...

Botnets are known to be one of the most serious Internet security threats. In this survey, we review botnet architectures and their controlling mechanisms. Botnet infection behavior is explained. Then, known botnet models are outlined to study botnet design. Furthermore, Fast-Flux Service Networks (FFSN) are discussed in great details as they play an important role in facilitating botnet traffi...

— Domain Name System (DNS) can be deployed in the network as a Location Manager (LM) for mobility management. The suitability of DNS as a LM can be measured on how successfully it can serve to locate a mobile host. In this paper, we developed an analytical model to measure the performance of DNS as LM for mobility management techniques with IP Diversity support based on success rate which takes...

Attackers, in particular botnet controllers, use secret messaging systems to set up large-scale command and control. In order to systematically understand the potential capability of attackers, we investigate the practicable of using domain name service (DNS) as a stealthy botnet command-and-control channel. We explain and quantitatively analyze several techniques that can be used to effectivel...

The lack of data authentication and integrity guarantees in the Domain Name System (DNS) facilitates a wide variety of malicious activity on the Internet today. DNSSec, a set of cryptographic extensions to DNS, has been proposed to address these threats. While DNSSec does provide certain security guarantees, here we argue that it does not provide what users really need, namely end-to-end authen...

Netalyzr is a widely used network measurement and diagnosis tool. To date, it has collected 198,000 measurement sessions from 146,000 distinct IP addresses. One of the primary focus areas of Netalyzr is DNS behavior, including DNS resolver properties, common name lookups, NXDOMAIN wildcarding, lookup performance, and on-the-wire manipulations. Additional tests detect and categorize the behavior...