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Effective Information Gathering Techniques for System Exploration

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The first step to exploring a system is not just another point and click. It is the part that suprisingly, no one really talks about; gathering information on the subject. In order to successfully get in a system, one must know . . .

Anthony Pell
Sep 06, 2001

NASA: Implementing OpenBSD Firewall for 802.11b Security Flaws

The network security group in the NASA Advanced Supercomputing (NAS) Division at Ames Research Center, in California's Silicon Valley uses OpenBSD and other open source software for its wireless firewall gateway implementation. They successfully installed a secure interoperable wireless network addressing . . .

Anthony Pell
Sep 01, 2001

AirSnort Data Exposure Risk In Wi-Fi Networks At Airports And Colleges

Laptop users, beware: a new program allowing hackers to grab data transmitted through the air could compromise most wireless Internet networks used in airports, hotels, hospitals and colleges. AirSnort, which was released on the Internet last week, exploits flaws in . . .

Anthony Pell
Aug 30, 2001

CERT CS-2001-03 Worm Attacks on Solaris and BSD Systems Exploited

Since the last regularly scheduled CERT summary, issued in May 2001 (CS-2001-02), we have seen several self-propagating worms, as well as active exploitation of vulnerabilities in Solaris in.lpd, BSD telnet daemon and Microsoft IIS by intruders. In addition, we have seen . . .

Anthony Pell
Aug 29, 2001

Protecting Sensitive Data With AirSnort In Public Wi-Fi Environments

Airports, schools and hotels might want to look closer at the wireless Internet networks they have been installing as a convenience for the must-stay-connected crowd. A new program called AirSnort, released on the Internet this week, lets enterprising hackers easily grab . . .

Anthony Pell
Aug 28, 2001

AirSnort: The Hacking Tool Exploiting WEP Risks In Wireless LANs

IT managers and security experts have expressed alarm at a new hacking tool for accessing supposedly secure wireless local area networks (WLANs), which is freely available on the Internet. The tool, called AirSnort, can recover encryption keys used to protect data . . .

Anthony Pell
Aug 28, 2001

Future of IP Addressing: IPv6 and IPsec Security Components

Anton Chuvakin writes "This article outlines the future of IP addressing (IPv6) and focuses on the security components of next generation IP services (IPsec). We list major components of IPsec and describe their functionality in terms of the security services they . . .

Anthony Pell
Aug 28, 2001

Exploring DDoS Attacks And Effective Defense Techniques

It's no secret that the Distributed Denial of Service (DDoS) attack is the biggest security threat to commercial networks since the advent of the virus. In fact, hackers are now using viruses as the data delivered by zombies, further complicating DDoS attacks.. . .

Anthony Pell
Aug 23, 2001

Exploring Challenges In Network Management Policy Enforcement

These rules, known as policies, sound simple. In practice, they are difficult to define and enforce. Any attempt to establish policies means that some users will disagree, which introduces politics to the equation. Enforcement, especially at the workstation level, is difficult and time consuming, and each policy change requires a reconfiguration of each network device, an expensive process.. . .

Anthony Pell
Aug 22, 2001

Dedication To Safeguarding Data Integrity And Security Management

It is not enough to realize how many attacks occur, or the types of attacks that are happening. We must develop a defensive mindset that will create an on-going sense of urgency about protecting data and systems. We all have responsibility for information security, regardless of whether we work in information technology.. . .

Anthony Pell
Aug 20, 2001

Critical Encryption Flaws Discovered in Wireless LAN Security

A second group of experts has discovered potentially dangerous flaws in the encryption algorithm designed to protect wireless LANs. The announcement, which comes seven months after researchers at the University of California discovered similar weaknesses, warns of a new and more . . .

Anthony Pell
Aug 14, 2001

Ethereal Network Analyzer: Insights And Tools For Packet Monitoring

Other than my little excursion into xinetd, I've used this series to show you ways in which you can make some sense of the packets flying around your network, and the tools that can help you do that. I started this article by giving you the dictionary definition for "ethereal". Ethereal also happens to be the name of an excellent network protocol analyzer, a powerful tool that lets you see what is happening on your network right now.. . .

Anthony Pell
Aug 12, 2001

By 2002, 30% of Enterprises Encountered WLAN Security Breaches

By the end of 2002, 30 percent of all enterprises will risk security breaches because they've deployed 802.11b wireless local area networks (WLANs) without proper security, research and advisory firm Gartner, Inc. said Thursday. About 50 percent of all enterprises plan . . .

Anthony Pell
Aug 10, 2001

Enhancing Remote Office Defense: The Layered Security Strategy

We all know that two-thirds of corporate hacks come from inside the firewall, making internal security as important as external. But what about your remote offices and SOHO workers? Are they as vulnerable to attacks as your corporate workers?. . .

Anthony Pell
Aug 09, 2001

Risks of Email Interception and How to Secure Your Data

The Internet has radically changed the way we communicate with each other. Email is obviously an extremely valuable and ubiquitous form of communication, but with this technology comes certain pitfalls that should be understood. The path that an email message takes . . .

Anthony Pell
Aug 06, 2001

RC4 Cipher Attack Reveals Severe Flaws in WLAN Security

A new report dashes any remaining illusions that 802.11-based (Wi-Fi) wireless local-area networks are in any way secure. The paper, written by three of the world's foremost cryptographers, describes a devastating attack on the RC4 cipher, on which the WLAN wired-equivalent privacy (WEP) encryption scheme is based.. . .

Anthony Pell
Aug 06, 2001

Assessing Network Risks and Implementing Strong Security Policies

Without a security policy, the availability of your network can be compromised. The policy begins with assessing the risk to the network and building a team to respond. Continuation of the policy requires implementing a security change management practice and monitoring . . .

Anthony Pell
Aug 02, 2001

Understanding Code Red Worm's Threats and Network Security Impact

While the initial version of the worm did little more harm to compromised servers than deface their Web sites, Maiffret said he's among those who fear the impact of an renewed outbreak on Internet traffic could be greater the second time . . .

Anthony Pell
Jul 31, 2001

Understanding Network Sniffers And Their Security Risks

Sniffers are tools, also known as network analyzers, used for monitoring network traffic. As such, if used by authorized personnel, can prove to be of a great value. But, on the other hand, sniffers represent significant threat to your network, and . . .

Anthony Pell
Jul 25, 2001

Solaris, HP-UX, Linux Critical SSH Access Hazard: 3.0.0 Advisory

A flaw in widely used Unix software could allow attackers to gain control over computers running Solaris, HP-UX and several versions of Linux, security analysts and the company selling the software warned Monday. SSH Communications Security, a Finnish company, reported Monday . . .

Anthony Pell
Jul 24, 2001

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