What is layered security? A method of adding different parts of security in order to either prevent or slow down attackers from entering an information system. Most times layered security is referred to defense in depth. A layered security system have things incorporated such as Firewalls, DMZ, antivirus, and Intrusion Detection Services. The list can be much longer. The purpose of a layered security system is to provide as much protection to the Information system as possible. No one can ever be sure how or when an attacker will attack, but layering the security measures on an information system will help keep it safe. Layered security measures are implemented in places such as big companies, school, and government facilities. At one point in time companies more afraid of thieves breaking and entering into their establishment implementing physical layered security, i.e. guards, motion detectors, sensors on windows, and so on and so on. Now a days the attackers are not breaking and entering they are entering the networks and retrieving sensitive information. Today have just one security measure in place is just not enough, so hence the layered security is so much more important. A basic example of a layered security system is one of a home security service such as “Norton, who provide services like an antivirus application, a firewall application, an anti-spam application, parental controls, and privacy controls.” (Perrin, 2008)
Firewalls
The firewall is commonly the first line of defense in the layered security structure. Also known as a broader sentry. “The firewall protects the internal network from unauthorized access from the internet, but also has the ability to protect internet from rogue users or applicatio...
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...erstanding Layered Security and Defense in Depth. Retrieved from techrepublic.com: http://www.techrepublic.com/blog/it-security/understanding-layered-security-and-defense-in-depth/703/
Schauland, D. (2014, February 16 ). In Computer Networking, What Is DMZ? Retrieved from www.wisegeek.org: http://www.wisegeek.org/in-computer-networking-what-is-dmz.htm
Shenk, J. (2013). Layered Security: Why It Works. SANS™ Institute.
Shinder, D. (2005, June 29). SolutionBase: Strengthen network defenses by using a DMZ. Retrieved from Techrepublic.com: http://www.techrepublic.com/article/solutionbase-strengthen-network-defenses-by-using-a-dmz/
Stewart, J. M. (2011). Network Security, Firewalls, and VPNs. Burlington: Jones & Bartlett Learning, LLC.
Tyson, J. (2001, April 6). How Encryption Works. Retrieved from howstufworks.com: http://computer.howstuffworks.com/encryption2.htm
and their use. In Committee on Deterring Cyber attacks: Informing Strategies and Developing Options (Ed.), Proceedings of a Workshop on Deterring Cyber attacks: Informing Strategies and Developing Options for U.S. Policy. Washington, D.C.: National Academies Press.
“The first role is to protect internal clients from malicious external servers. All client connections to external servers are proxied through a single application proxy firewall.” (p.339)
Firewall features are provided at the base of network virtualization platforms to bring about segmentation. It allows automated provisioning and context sharing across virtual platforms which lead to increased visibility and security across applications on virtual or physical workloads. This would have been impossible in the past as it would compromise either security or performance. Improved security through virtualization helps you gain mileage over challenges that would otherwise ruin your reputation among clients (Kotsovinos,
DMZ – Demilitarized Zone - (sometimes referred to as a perimeter network) is a physical or logical subnetwork that contains and exposes an organization's external-facing services to a larger and untrusted network, usually the
Roberts, Richard M. "Network Secrurity." Networking Fundamentals. 2nd ed. Tinley Park, IL: Goodheart-Willcox, 2005. 599-639. Print.
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 fact, according to several studies, more than half of all network attacks are waged internally. To determine the best ways to protect against attacks, we should understand the many types of attacks that can be instigated and the damage that these attacks can cause to data. The most common types of attacks include Denial of Service (DoS), password, an...
Although VPN is very popular in the market for networking technology, it may raise some concerns for IT managers. VPN requires an in-depth understanding of public network security issues and proper deployment precautions. The task of choosing and deploying a VPN solution is far from being simple and may require the training of workers in at least the basics...
A firewall is a network device, hardware, software, or a combination of the two, whose purpose is to enforce a security policy across its connections. It is comparable to a wall that has a window where the wall serves to keep things out, except those permitted through the window. A security policy acts like the glass in the window; it permits some things to pass, light, while blocking others, air. The heart of a firewall is the security policy that it enforces.
The packet-filtering firewall will keep out unauthorized data from entering the network and reduce the number of ports that are accessible by the users and outside threats.
It has been demonstrated that a number of interoperable systems must be implemented to fully protect a network; a strategy known as Defense in Depth. Due to the multitude of security devices and device categories available, it can be very difficult to identify the correct tools for meeting security goals. Using the Defense in Depth strategy will require an understanding of the interactions between devices occuring within the network.
Cybersecurity is the technology that protects computers and networks from unauthorized personnel. Ever since computers have expanded to homes and the workplace; the need for cyber security has grown exponentially. Millions of people around the world have access to the internet at a given time, and this allows for predators to attack, scam, hack, and intrude on personal and government information. Cybersecurity is designed to counteract these attempts to ultimately allow for safe networks and computers.
What is IP spoofing? - A Word Definition From the Webopedia Computer Dictionary. (n.d.). Retrieved from http://www.webopedia.com/TERM/I/IP_spoofing.html
Melford, RJ 1993, 'Network security ', The Internal Auditor, vol. 50, no. 1, p. 18.
The network management plan and security plan is important to help the company figure out how they will improve its network and security procedures for the company. Planning involves outlining objectiv...