network behavior that was reported by the network engineers and the system administrators was an analysis that showed that a single host on the network is opening hundreds of SSH sessions to every single other host on the Aim Higher College’s network every minute. This attacker or hacker is flooding the network with the SSH sessions to bring the web servers down to get some classified information. The second odd behavior was reported that hundreds of hosts are constantly sending SYN packets only
their original versions, a prime example being the SSH protocol. SSH (Secure Shell) is a network protocol that allows users to remotely login to a computer in order to perform tasks such as executing commands and transferring files. It was designed in 1995 as a means to replace less secure protocols like rlogin and telnet. The problem with these protocols is that information, including passwords, is send as plaintext (Rosasco, & Larochelle, 2003). SSH addresses this issue by encrypting traffic sent
The Secure Shell (SSH) is a protocol to use the network services with security. For example, when an email is send or receive, SSH will automatically encrypt or decrypt the email so that attacker will not intercept in the middle of the transaction [1]. There are two versions of SSH i.e. SSH1 and SSH2. SSH has 3 main components as shown in figure 1: Transport Layer Protocol that provide confidentiality, integrity and authentication; User Authentication Protocol that authenticate client to the server;
File Transfer Protocol (FTP) is an application layer protocol, which has the primary function of transferring data files between computers (Clark 2003). The protocol specification was originally developed in the early 1970s, and was published as RFC 114 in April 1971, by Abhay Bhushan. This occurred even before the Internet Protocol Suite – commonly known as TCP/IP or Transmission Control Protocol (TCP) and the Internet Protocol (IP) – was even established (Kozierok 2005). The protocol specification
protocols including any advantages and disadvantages. The report shall then analyse associated infrastructure requirements and scenarios where both protocols could be implemented. Main Section A Brief Overview of TLS and SSH: TLS (short for Transport Layer Security) was first released in January 1999 and its main focus was to ensure secure data communication. TLS provides the means for a variety of client and server applications to converse efficiently and to rule out
Problems with Pre-Admission Call Center South Street Hospital (SSH) is 1 of 12 not-for-profit healthcare systems in the Great West Hospital System. Their corporate call center located at Great West handles all 12 hospitals. Dr. Canton is a colorectal surgeon at SSH. His office received an irate call from Mr. Gutsy canceling his surgery scheduled for the next day. He claimed that a woman from SSH had called him demanding that he bring money to the admitting center for his co-pay but stated that he
1. Introduction A penetration test is performed on a system in order to find security threats. The pen tester carries out the same tests a hacker would do. The hacker is looking for vulnerabilities in the computer and network in order to exploit them and gain access. The pen tester performs the same task but wants to find and fix any security threats without harming or compromising the system. The pen tester has permission to perform vulnerability checkes wheras the hacker does not. (Add more).
Introduction Decades of operating system development and a collection of systems and features from many other systems combined with many unique ideas and implementations resulted in the development of Apple, Inc.'s OS X family. It is necessary to examine the older systems of OS X as well the progress of the system to understand the different technologies and how they interact. To secure and troubleshoot problems it is of great importance to understand the how and often the why of OS X technology
the differences of every protocol used in this purpose. References Forouzan, B. A. (2013). Data Communications and Networking. Connect Learn Succeed. Hallberg, B. A. (2013). Networking A Beginner's Guide. McGraw Hill. Lonvick, Y. &. (2006, 01). SSH Protocol Architecture. Retrieved from IETF: http://www.ietf.org/rfc/rfc4251.txt Nieminen, M. (2006, 07). SearchSecurity. Retrieved from Techtarget: http://searchsecurity.techtarget.com/definition/Transport-Layer-Security-TLS Pintello, T. (2013). Introduction
Network Security is the protection of the computer’s network though out the entire infrastructure. It can protect very important information and computer files to help prevent theft, spyware, malware, viruses, and more. Depending on if you have a public or private network, can determine what type of security settings you need for your network. All people are different on what they want to have secured or not, but most people do not know how to prevent people or things from getting in their network
Being a woman can be really difficult sometimes. We are very different from Men and we tend to have to change our nature to be able to win. We forget who we are and what we are when it comes to society being sexist. We experience a lot of downfalls in life because of the people who are sexist. Sexism can shape how women think, feel, and behave towards men. Even though Women aren’t the only ones who experience sexism, Women are affected by sexism because they experience pay gap, street harassment
In the computer age, vulnerabilities and back doors into devices are proving heaven for hackers and hell for administrators. Every week it seems that new vulnerabilities are discovered in different devices. Cisco IOS is no different and numerous vulnerabilities can be found in their devices. The aim of the report is to research vulnerabilities in Cisco's IOS operating system. Tools available in Backtrack 5 will be used to exploit the vulnerabilities. GNS3 will be used to set up a working topology
Introduction This lecture was given by Dr. David Mirza Ahmad one of chief mentors of Subgraph, which is a open-source security start-up based out in Montreal. The talk was based on Kerchoff’s principle which states “the security of any cryptographic system does not rest in its secrecy; it must be able to fall into the enemy’s hand without inconvenience” [1]. The kerchoff’s principle underlines the fact that free software should be having reasonably good security. This fact is well understood by
Both Bridges and Switches work on the data link layer of the OSI Model. However, switches are more advanced. Discuss how a switch has an advantage over a bridge in a network then elaborate more on the technology implemented in switches to control broadcast domains. A network switch is a networking device that connects devices together on a network enacting a form of packet switching. It operates in the Data Link layer of the OSI model. It essentially acts like a multi-port network bridge that
In order to determine the flow and types of packets on the network, a packets sniffer program ‘Wireshark’ was used to capture the packets. Wireshark was used to capture 30 minutes of network activity in two different intervals, morning and afternoon. The partial output from the Wireshark capture, from both sessions is shown in figure 4.4; from analysis of the packet sniffer program it can be deduced that the network traffic usage is mainly TCP connections, such as web browsing, file transfer and
feature it was able to spread from phone to phone and upon activation of the device it would display the message "Caribe". In 2009 the first iPhone worm "Ikee" was created it was able to infect and spread among jailbroken iPhones that had installed SSH while using the default root password. This worm changes the wallpaper of your lock screen to a photo of Rick Astley with the message: "ikee is never going to give you up.” As of 2011, it 's reported that as much as 73,000 malware strains are written
The security industry has become a billion dollar industry because there are increasing threats to security in these days. In the physical world, security is demanded because there are an increasing number of incidents against the security of the society. However, in the internet or online world, the need and important to security is also getting crucial. In order to deal with such security threats and putting the IT services to their productive use we have considered to work on the project for introducing
Although this has been shortly covered in a previous essay, I thought it necessary to explain this experience further: my time as a research assistant at Clemson’s DICE (Data Intensive Computing Environments) lab. This experience has been one of the biggest in my life and quite possibly the one singular experience that concretes my decision to go into computers. Starting in April of 2016 with an offhand question about if I wanted to work on something with my stepdad on computers during the summer
Introduction Wireless security is a complex field, but employing a few simple defenses will leave a network far safer against attackers. A wireless local area network (WLAN) is a local area network using high-frequency radio signals to wirelessly connect two or more devices, often to the internet via a wireless access point within a limited geographical area. The millions of WLANs all across the world can be found in homes, coffee shops, and even in international enterprises. Most of the WLANs deployed
Network Security Assessment Prepared for: University of Maryland University College Prepared by: Christopher Harris Executive Summary 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