Linux Network Security - Page 72

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Wireless Networks: Open Doors for Bad Guys

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Trouble is, with the rise of WLANs has come a whole new breed of security threats. A key research paper released on July 25 by cryptographers Scott Fluhrer of Cisco Systems and Itsik Mantin and Adi Shamir of Israel's Weizmann Institute . . .

Anthony Pell
Sep 12, 2001

Prioritizing patches: A precipitous pandemonium

Is the patching of mission critical systems and related software a priority for your business? May I suggest that patching such software become an imperative task incorporated into an IT position ASAP. Recent virus outbreaks and increases in overall attacks have . . .

Anthony Pell
Sep 08, 2001

The First Step of Exploring a System

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 uses OpenBSD; overcomes 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: Wireless Networks Beware!

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® Summary CS-2001-03

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

Your data, my friend, are blowing in the wind

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

Wireless LANs face hacking threat

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 IP Security, part I

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

DDoS effort ill-placed

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

Technology Briefing: Network Management Services

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

Every job requires commitment to network security

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

Wireless LAN vulnerability exposed

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

Your Network's Secret Life, Part 5

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

WLANs Cause Widespread Security Concerns

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

Triple your remote office protection: The Layered Approach

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

Top 10 Places Your Email Can Be Intercepted

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

Cipher attack delivers heavy blow to 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

Network Security Policy: Best Practices White Paper

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

Code Red Worm Reveals Flaws In Network Stewardship

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

Linux Network Security - Page 72

Linux Pentesting Distros: An Essential Tool for Strengthening Network Security

Enhancing Network Security with Linux Proxy Servers

OPNsense 24.7 'Thriving Tiger': Elevating Open-Source Network Security and Performance