Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Network & Security Expert

Problem 1:

Recently Voice over IP (VoIP) is experiencing an exceptional growth. Being a real-time service, VoIP is more susceptible to attacks. Furthermore, VoIP uses multiple protocols for call control and data delivery, making it vulnerable to different attacks at different protocol layers. An attacker can without difficulty disrupt VoIP services by flooding TCP SYN packets, UDP-based RTP packets, or SIP-based INVITE messages, which pose a critical threat to IP telephony.

Attack to an IP telephony network is not new concept. However, the manifestation of attacks, their targets, and how they are implemented has evolved over the past decade. To date, most Internet originated attacks have targeted the transport and network layers of the TCP/IP protocol stack. Typically, the goal of these attacks is either to overwhelm a specific machine or to saturate the communication link. But, as the Internet evolves and enterprises deploy multiple connections to the Internet, attacking the infrastructure has become less critical. Certain attacks are being targeted at particular services that consumers demand and rely upon, e.g., e-mail and web. This trend will continue as new complex services are deployed and gain widespread adoption. IP telephony is one such complex service that is gaining rapid momentum and has the potential for becoming a strategic new technology in coming decades. In turn, it is a prime target for new forms of attacks.  In order to support IP telephony in enterprise network, new network elements must be deployed and existing network elements must be modified. To support calls between endpoints connected to the IP network, referred to as Net-to-Net calls, SIP (Session Initiation Protocol) Proxy and Registrar/Location Server (RLS) must be deployed. To support call between endpoints in Public Switched Telephone Network (PSTN) and endpoints connected to the IP network, referred to Net-to-PSTN and PSTN-to-Net calls, it is necessary to deploy a Media or Signal Gateway (MSG) that can act as an application level proxy between the IP network and the PSTN. Besides these new network elements, supporting IP telephony requires modifications in enterprise firewall to allow dynamic protocol ports to be opened at the clients to send and receive audio and/or signalling and control messages.

problem1. The case study says that different attacks are possible on an IP telephony network. describe in detail the famous attacks on an IP telephony network.

problem2. From the case study we can deduce that there is a need to have vulnerabilities for a hacker to break in the system. Hence, what are the dissimilar significant steps which require to be followed to mitigate the vulnerabilities associated in VoIP network?

problem3. When a hacker performs a DoS attack on IP telephony network, the two major protocols that he may use are namely:

i. ICMP

ii. TCP/SYN

describe how the hacker would use the above protocols to perform his attack.

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M96283

Have any Question? 


Related Questions in Computer Network & Security

What special function does a cache server perform why does

What special function does a cache server perform? Why does this function have value for larger organizations? How does screened-host firewall architecture differ from screened-subnet firewall architecture? Which offers ...

Project assignment software defined networks1introductionin

Project Assignment: Software Defined Networks 1 Introduction In this assignment you will learn how to use the OpenFlow protocol to program an SDN controller in a Mininet emulated network using POX. The following sections ...

Discussionip basic concepts please respond to the

Discussion "IP Basic Concepts" Please respond to the following: - Suppose that you work for a company that has been using IPv4 in each of its networks. After hearing a discussion about the differences between IPv4 and IP ...

Assignment1many more square-wave digital encoding schemes

Assignment 1. Many more square-wave digital encoding schemes exist than NRZ-L, NRZI, Manchester, differential Manchester, and bipolar-AMI. List three other encoding techniques and show an example of how each encodes. 2. ...

Learning team recommend pki technologythe head network

Learning Team: Recommend PKI Technology The head network engineer at ACME Corp. is concerned about nefarious parties being able to freely plug in devices to the company LAN. Even though he is skilled at network administr ...

Assignment windows network servicesproposalovervieweach

Assignment: Windows Network ServicesProposal Overview Each student will create a detailed, organized, unified technical solution given the scenario described below. The submission will be in a written format, with at lea ...

Multiple-choice questions1 which of the following is not a

Multiple-Choice Questions: 1. Which of the following is NOT a feature of an Intranet? A. uses Internet based standards, such as HTML and SMTP B. is used to connect both local and remote sites into one network C. is used ...

Lab questions1 when running snort ids why might there be no

Lab Questions 1. When running Snort IDS why might there be no alerts? 2. If we only went to a few web sites, why are there so many alerts? 3. What are the advantages of logging more information to the alerts file? 4. Wha ...

Assignmentyour have been contracted by healthfirst hospital

Assignment Your have been contracted by HealthFirst Hospital Foundation (HHF), a charitable organization that provides services to community clinics in Atlanta, Georgia. Due to the organization's tremendous growth, it wi ...

Threat management and disaster recovery final paper this is

Threat Management and Disaster Recovery Final Paper This is a two part assignment that will be submitted as one final paper Part 1 I would like you to complete a limited Risk Assessment for a fictional enterprise. This a ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro