Network Design Contents Introduction – Why Are Security Protocols Are Needed? 2 What Is TLS? 2 A Diagram Detailing the TLS Handshake 3 What Is SSH? 3 A Diagram Summarising SSH 4 TLS & SSH; A Comparison 4 Similarities 4 Differences 4 Comparative Advantages 5 Network Requirements 5 TLS Requirements 5 SSH Requirements 5 TLS Example 6 SSH Example 6 Conclusion 6 Bibliography 7 Introduction – Why Are Security Protocols Are Needed? In this modern day and age of computing, networks are a huge part of IT. It is important now more than ever that data sent over any network, whether it be a LAN (Local Area Network) or WAN (Wide Area Network; The Internet) is kept safe, private (when required) and uninterrupted in terms of transmission. If data transmission is interrupted or data and information within the data is stolen when it is being transmitted this can have devastating effects depending on what the data or information relates to e.g. companies classified customer information. An actual instance of this is when a group of hackers deemed ‘Annonymous’ hacked Sony’s PlayStation Network servers and managed to gain access to millions of their customer’s details. It is clear that in the wrong hands, data and or information can be deadly. This is where security protocols come in; a security protocol can be defined as ‘A sequence of operations that ensure the protection of data. Used with a communication protocol, it provides secure delivery of data between two parties’ (security protocol Definition from PC Magazine Encyclopedia. 2014). Cryptography is a key part of security protocols as it converts the data being sent into a secret code so it is fit for transmission in a secure manner, especially when being sent... ... middle of paper ... ...verview of the SSL or TLS handshake. 2014. An overview of the SSL or TLS handshake. [ONLINE] Available at: http://pic.dhe.ibm.com/infocenter/wmqv7/v7r1/index.jsp?topic=%2Fcom.ibm.mq.doc%2Fsy10660_.htm [Accessed 25 March 2014]. Network Security Protocols: IPsec vs. TLS/SSL vs. SSH – Part II « K2E Security. 2014. Network Security Protocols: IPsec vs. TLS/SSL vs. SSH – Part II « K2E Security. [ONLINE] Available at: http://www.k2esec.com/secure-communications/network-security-protocols-ipsec-vs-tlsssl-vs-ssh-part-ii. [Accessed 25 March 2014]. Barrett, D. J. and Silverman, R. E. 2001. SSH, the secure shell. Cambridge [Mass.]: O'Reilly. Oppliger, R. 2009. SSL and TLS. Boston: Artech House. Stallings, W. and Stallings, W. 1999. Cryptography and network security. Upper Saddle River, N.J.: Prentice Hall. Rescorla, E. 2001. SSL and TLS. Boston: Addison-Wesley.
Security of the companies data is one of the most important components which allows the business to perform its day to day operation using various networking devices, services that absolutely needs to be protected from intruders. Some of these devices include online transactions, the exchange of data between users and clients both internal and external and external web data needs to be secured. There are several polices that would need to be configured such as a web sever and firewall configurations. However, with these configurations the first and most important task is to identify any vulnerabilities or loopholes in security within the company. The company has both LAN (Local Area Network) and WAN (Wireless Local Area Network) and a web sever. These resources need to be secured at all times from hackers or anyone else by implementing the appropriate security measures.
We live in a technologically saturated world. Everyone is connected to one network or another by any number of devices, so that begs the question: “Just how secure are those connections?” Earlier this year, headlines were made when a hospital in California (and several others in other states shortly thereafter) had its network system hacked; its files and patient information encrypted and held ransom. To gain access to their own files, the hospital paid the hackers for the encryption key so that they could continue providing their patients with the much needed medical care they were seeking [1]. More recently, it was reported that over 6,000 online stores had malicious code, designed to steal and store credit card information, hidden within
Network breaches are an ever-present and growing threat to network security. There are many ways that such breaches can occur, and the following material will analyze five case studies. The issues to be addressed will include, what went wrong, how could it have been prevented, and what measures could be instituted to prevent a reoccurrence.
What concerns the government of the United States most is the security of the critical infrastructure from the cyber threats. The nation is depending heavily on the technology in most of its critical sectors to keep it up and running. Thus, this makes its more vulnerable to cyber-attacks from outsiders and insiders. Therefore, its protection must be a priority.
In the rapidly developing field of computer science, there is no more controversial issue than encryption. Encryption has become a highly contested issue with the broad use of global networks including the Internet. As more and more sensitive documents are being placed on computer networks, and trusted information is being sent from computer to computer throughout the world, the need for encryption has never been greater. However, the effects of encryption on our lifestyle and the government's role in encryption has been (and will continue to be) debated for years to come.
Summary Report for: Computer Security. (2010). January 10, 2011, from O*net Online: retreived January/15/2011 http://online.onetcenter.org/link/summary/15-1071.01
Schneier, Bruce. Secrets and Lies: Digital Security in a Networked World. New York: John Wiley & Sons, Inc., 2000.
Roberts, Richard M. "Network Secrurity." Networking Fundamentals. 2nd ed. Tinley Park, IL: Goodheart-Willcox, 2005. 599-639. Print.
One of the largest parts of commerce is transaction. Transactions are needed anytime two parties exchange money or information. Since the Information Age has begun, transactions are more common over the Internet, where it is more imperative that transactions are secure (Klein x). Corporations have also become more widespread, which means that cryptography is needed to secu...
ISO/IEC 9798, Information Technology - Security Tech- niques - Entity Authentication. Part 1, General. Part 2, Mechanisms Using Encipherment Algorithms. Part 3, Mechanisms Using a Public-Key Algorithm, Int’l Orga- nization for Standarization, Geneva, 1997.
For thousands of years cryptography and encryption have been used to secure communication. Military communication has been the leader of the use of cryptography and the advancements. From the start of the internet there has been a greater need for the use of cryptography. The computer had been invented in the late 1960s but there was not a widespread market for the use of computers really until the late 1980s, where the World Wide Web was invented in 1989. This new method of communication has called for a large need for information security. The internet allows people to communicate sensitive information, and if received into the wrong hands can cause many problems for that person.
An attacker looks for poorly configured network devices to exploit. Common vulnerabilities include weak default installation settings, wide open access controls and unpatched devices. To gather information from the encrypted network traffic attacker places the packet sniffing tool on the network. Sniffing is the act of monitoring network traffic for data such as clear-texts passwords or other configuration credentials. Usually transmitted information carried along during an Secure SHELL session cannot be seen but other information such as sender’s and receiver’s IP addresses, DNS requests to resolve hostname, port numbers and the amount of data is visible. If the traffic along the network is encrypted by the attacker, the attacker can see which sites are visited, amount of data received and sent and the port numbers used for the connection. Using a simple packet sniffer, all plaintext traffic can be read easily. This becomes possible because of weak physical security or lack of encryption during the process of sendin...
To combat those threats and ensure that e-business transactions are not compromised, security technology must play a major role in today's networks. Why Networks Must Be Secured? Attacks: -. Without proper protection, any part of any network can be susceptible to attacks or unauthorized activity. Routers, switches, and hosts can all be violated by professional hackers, company competitors.
In this era when the Internet provides essential communication between tens of millions of people and is being increasingly used as a tool for security becomes a tremendously important issue to deal with, So it is important to deal with it. There are many aspects to security and many applications, ranging from secure commerce and payments to private communications and protecting passwords. One essential aspect for secure communications is that of cryptography. But it is important to note that while cryptography is necessary for secure communications, it is not by itself sufficient. Cryptography is the science of writing in secret code and is an ancient art; In the old age people use to send encoded message which can be understand by the receiver only who know the symbolic and relative meaning of that encoded message .The first documented use of cryptography in writing dates back to circa 1900 B.C. Egyptian scribe used non-standard hieroglyphs in an inscription. After writing was invented cryptography appeared spontaneously with applications ranging from diplomatic missives to war-time battle plans. It is no surprise, then, that new forms of cryptography came soon after the widespread development of computer communications. In telecommunications and data cryptography is necessary when communicating in any untrusted medium, which includes any network, particularly the Internet [1].Within the context of any application-to-application communication, there are some security requirements, including: