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DS5.10 - Network Security

This topic is intended to enable collaboration and sharing of information to facilitate a better understanding and approach to implementing this COBIT control objective based on the risk, value and guidance provided by its corresponding control practices.

COBIT Control Objective DS5.10 - Network Security is contained within Process Popup Ensure Systems Security.

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Network Security

Use security techniques and related management procedures (e.g., firewalls, security appliances, network segmentation, intrusion detection) to authorise access and control information flows from and to networks.

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Value Drivers

  • Corporate security technology protected
  • Reliable information secured
  • Corporate assets protected
  • Network security managed in a consistent manner
  Risk Drivers
  • Failure of firewall rules to reflect the organisation’s security policy
  • Undetected unauthorised modifications to firewall rules
  • Compromised overall security architecture
  • Security breaches not detected in a timely manner

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  1. Establish, maintain, communicate and enforce a network security policy (e.g., provided services, allowed traffic, types of connections permitted) that is reviewed and updated on a regular basis (at least annually).
  2. Establish and regularly update the standards and procedures for administering all networking components (e.g., core routers, DMZ, VPN switches, wireless).
  3. Properly secure network devices with special mechanisms and tools (e.g., authentication for device management, secure communications, strong authentication mechanisms). Implement active monitoring and pattern recognition to protect devices from attack.
  4. Configure operating systems with minimal features enabled (e.g., features that are necessary for functionality and are hardened for security applications). Remove all unnecessary services, functionalities and interfaces (e.g., graphical user interface [GUI]). Apply all relevant security patches and major updates to the system in a timely manner.
  5. Plan the network security architecture (e.g., DMZ architectures, internal and external network, IDS placement and wireless) to address processing and security requirements. Ensure that documentation contains information on how traffic is exchanged through systems and how the structure of the organisation’s internal network is hidden from the outside world.
  6. Subject devices to reviews by experts who are independent of the implementation or maintenance of the devices.

 

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Documents & Publications: 76 total

Events & Online Learning: 13 total

7 May 2012
ISACA International Event
Orlando, Florida, USA
Get the knowledge you need to stay one step ahead of the competition and keep up with changing professional trends at ISACA’s North America CACS Conference.
14 May 2012
ISACA International Event
Chicago, IL, USA
15 May 2012
ISACA International Event
Washington, DC, USA
12 Jun 2012
ISACA International Event
Dallas, Texas, USA
ISACA Training is a unique educational event designed to provide the tools you need to maintain, update and upgrade your skills, and to continue your professional development.
7 Aug 2012
ISACA International Event
Chicago, Illinois, USA
ISACA Training is a unique educational event designed to provide the tools you need to maintain, update and upgrade your skills, and to continue your professional development.

Journal Articles: 260 total

Volume 3, 2012
by Steven J. Ross, CISA, CISSP, MBCP
To accelerate investments in security, we security professionals must do a better job of communicating the reality of the threats that our organizations face.
Volume 3, 2012
by Fabrizio Baiardi, Claudio Telmon, CISA, CISSP, and Daniele Sgandurra, Ph.D.
Haruspex is a risk evaluation methodology defined and implemented by the research group on risk management in the Department of Computer Science at the University of Pisa, Italy.
Volume 2, 2012
by Ed Gelbstein, Ph.D.
In the last couple of years, it has become evident that no organization can avoid being influenced by the tsunami of innovative technology, with ever shorter life cycles.
Volume 1, 2012
by Michael Mendelsohn, CISSP, Antoine Philipovitch, William Welch, CISM, and Robert Zanella, CISA
One of today’s big security marketing pushes is enterprise single sign-on (ESSO).
Volume 1, 2012
by Edward Amoroso | Reviewed by Jeimy J. Cano M., Ph.d., CFC, CFE, CMAS
This book is particularly interesting to and useful for information security and IT governance professionals because of its strategic and tactical guidance that can help refine decisions on the protection of critical infrastructure.
Volume 6, 2011
by Ed Gelbstein, Ph.D.
Information security has become a visible issue in business, on the move and at home.

Wikis: 2 total

Blog Posts: 26 total

On the AS/400 (System i) it is possible to audit for default passwords using the ANZDFTPWD command. A default password is defined as a password which is the same as the user profile. The command behaves slightly differently depending on the value of the s...
Posted By : Ian Cooke | 0 comments
The main idea I am trying to advocate with these posts is a simple one.  Compare a database you are auditing against a database that you know already meets the standards required by the organisation you are auditing. This is achieved by creating “CSV ty...
Posted By : Ian Cooke | 1 comments
We have covered most of the core items that should be consider when performing an Oracle database audit in previous posts, however there a number of other items that I would typically look into. Database Links A database link is an object in one database...
Posted By : Ian Cooke | 0 comments
The company you are auditing should have a policy on what is being audited within your Oracle database.  The level of auditing will almost certainly be affected by the sensitivity of the data. Good examples and bench marks for auditing may be seen in the...
Posted By : Ian Cooke | 0 comments
Typically application access to an Oracle database is via one of two methods.  Either all users access the same database using a single (proxy) user which is defined in an initialisation (.INI) file, registry etc. Or the users access the database individ...
Posted By : Ian Cooke | 1 comments
Before we get into auditing Oracle privileges a reminder of a few definitions might be helpful. A user privilege is the right to run a particular type of SQL statement, or the right to access an object belonging to another user, run a PL/SQL package, and...
Posted By : Ian Cooke | 1 comments