To: Boss From: Cory Sanders Date: February 24, 2014 Subject: Recommendations There was a recent attack on the network. The attack was geared towards the application web server that the staff members use to acquire information about patients insurance including filing claims. The type of attack was a DOS attack. This attack could have been prevented if certain measures were implemented. First and foremost, the network should have had the IDS systems that was bought implementing and integrated
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CD’S, DVD’S, and USB’S or other personal devices into the work place that can connect to the network and possibly harming the system. The work station domain is where users first access the system, applications, and the data. The system should be password coded for authentication purposes. Applications and data ought to be monitored and permissions set accordingly. Downloading should also be limited to only those people with the proper permissions. The LAN domain is a collection of computers all
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CS 487 Firewalls and Network Defense slide 1 Firewalls Idea: separate local network from the Internet Trusted hosts and networks Firewall Intranet DMZ Router Demilitarized Zone: publicly accessible servers and networks slide 2 Castle and Moat Analogy More like the moat around a castle than a firewall • Restricts access from the outside • Restricts outbound connections, too (!!) – Important: filter out undesirable activity from internal hosts! slide 3 Conceptually
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Fundamentals of Network Security John E. Canavan Artech House Boston • London http://www.artechhouse.com Library of Congress Cataloging-in-Publication Data Canavan, John E. Fundamentals of network security / John E. Canavan. p. cm.—(Artech House telecommunications library) Includes bibliographical references and index. ISBN 1-58053-176-8 (alk. paper) 1. Computer security. 2. Computer networks—Security measures. I. Title. II. Series. QA76.9.A25 C364 2000 005.8—dc21 00-050810 CIP British Library Cataloguing
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subject to an SNMP buffer overflow attack at a likelihood of 0.1. The switch has an impact rating of 90 and no current controls in place. You are 75% certain of the assumptions and data. Asset B: Sever WebSrv6 hosts a company Web site and performs e-commerce transactions. It has a Web server version that can be attacked by sending it invalid Unicode values. The likelihood of that attack is estimated at 0.1. The server has been assigned an impact value
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data removal by employees with USB flash drives, or servers crashing and bringing productivity to a halt” ("Cybersecurity," 2013) . The CGF network is a typical office network composed of an external firewall with an external DMZ with public use servers, and internal firewall protecting the corporate network. The internal CGF network includes Microsoft Windows OS workstations and enterprise servers supporting: web, exchange, file, AD and FTP servers, additionally there are 100 workstations consisting
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Each component is a potential point of attack. Since the operating system provides the ability for software and hardware to interact it is a good starting point for securing an entire environment. On any computer, the operating system enables software to access physical resources. For example, it is the operating system that governs how any application actually reads from, or writes to, a physical disk. Consequently, the operating system is a prime candidate for attack and a valuable resource to protect
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over the web. Is it possible to achieve the same functionality on the web compared to an ordinary windows application? Our work aims towards evaluating which one of the solutions that is the best. Many customers wants a standalone application rich of functionality and demands to have the same functionality on the web. Is it always possible to achieve the costumer’s requirements on a web based solution or do you have to settle with an implementation of a standalone application? There
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2009). As long proponents of computer security, the NSA worked to develop SELinux. SELinux is an application of the FLASK architecture, which provides Mandatory Access Control (MAC) as part of the operating system kernel. According to a paper presented at the 2001 Ottowa Linux Symposium, “The security policy decision logic has been encapsulated into a new kernel component called the Security Server (SS)” (Loscocco and Smalley. 2001), this allows the kernel to enforce policy decisions without needing
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maintenance. Specific decisions about security must be made in each of these phases to assure that the system is secure. During this initiation phase, organizations conduct a preliminary risk assessment for the planned information system. The application of federal standards and guidelines allows for categorization and aids system security planners in defining information system security controls according to levels of impact. This assists IT staff in selecting a baseline of initial security controls
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