Linux Network Security - Page 71

Discover Network Security News

Building an E-mail Virus Detection System for Your Network

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The basic outline of the system consists of using Bash scripts, metamail, grep, the Obtuse Systems' smtpd product, Samba and a command-line virus scanner. A flowchart-style diagram can be found in Figure 1. The Obtuse Systems' SMTP store and forward package . . .

Anthony Pell
Nov 21, 2001

Network Scanning

A nice quick summary of what ports and services are by the folks at O'Reilly. "Each service is handled by a program called a "daemon." The daemon listens on, or is bound to, a specific port to receive incoming requests from . . .

Anthony Pell
Nov 19, 2001

Brute-Forcing Web Session IDs

Almost all of today's "stateful" web-based applications use session IDs to associate a group of online actions with a specific user. This has security implications because many state mechanisms that use session IDs also serve as authentication and authorization mechanisms -- . . .

Anthony Pell
Nov 13, 2001

An Analysis of the RADIUS Authentication Protocol

RADIUS is a widely used protocol in network environments. It is commonly used for embedded network devices such as routers, modem servers, switches, etc. This analysis deals with some of the characteristics of the base RADIUS protocol and of the User-Password . . .

Anthony Pell
Nov 12, 2001

Virtual Honeynets

A honeynet is a very valuable tool for research, intelligence and education: by knowing the methods an intruder uses we can better detect break-ins in the future. Information gathered from honeynets casn be analysed to monitor attack trends. The information collected . . .

Anthony Pell
Nov 08, 2001

The 60 Minute Network Security Guide

This SNAC Guide addresses security "best practices" from the National Security Agency's Systems and Network Attack Center. It includes information on security policies, passwords, host security, buffer overflows, rootkits, and more.

Anthony Pell
Nov 01, 2001

Hackers shift DoS attack tactics

The Computer Emergency Response Team (Cert) co-ordination centre reported last week that the targets of denial of service (DoS) attacks are changing, and are becoming more sophisticated and damaging. According to Cert, early DoS attacks overloaded web servers with simple . . .

Anthony Pell
Nov 01, 2001

DoS Attacks Go For the Throat

We all yearn for the more innocent time when the acronym DOS stood for your Disk Operating System, or even the Dept. of State for the better traveled. Today, however, it is a term that brings a chill to many technologists . . .

Anthony Pell
Oct 29, 2001

Secure wireless doesn't have to be an oxymoron

"We never gave security a thought," Brian Chee says, talking about what was probably the world's first wireless data network. Chee worked on Aloha Net, a new concept in communications developed by the University of Hawaii back in the late 60's. . . .

Anthony Pell
Oct 29, 2001

New class of wireless attacks

Bob Fleck, a security consultant at Cigital, working with Jordan Dimov, has discovered new class of wireless attacks that can be used to gain unauthorized access to normally-protected machines on a standard wire-based internal network. Wireless networks involve installation of . . .

Anthony Pell
Oct 17, 2001

Former federal agent calls XP a threat to national security

A computer forensics expert and retired federal agent is trying to convince the U.S. government that Windows XP is a threat to national security and its distribution should be postponed.. . .

Anthony Pell
Oct 15, 2001

Security Experts Are on Alert Over Wireless-Hacking Technique

Security experts are raising alarms about a technique that computer hackers could use to penetrate a company's wired data networks from its wireless networks, Monday's Wall Street Journal reported. Wireless links are increasingly being used by companies to connect desktop and . . .

Anthony Pell
Oct 15, 2001

Enhancing Security: Can the Internet Help?

The Internet has been used tactically to help after cataclysmic events, but its best future preventive use may be as an educational tool. Given the many Internet security breaches that have occurred this past year, from Code Red to the . . .

Anthony Pell
Oct 12, 2001

Disaster planning goes beyond IT

Any good disaster plan must go well beyond bulletproofing IT and consider a variety of human factors, according to a panel of research analysts speaking Monday at the Gartner Symposium/ITxpo 2001 here. Specifically, Gartner analyst Roberta Witty emphasized that disaster planning . . .

Anthony Pell
Oct 11, 2001

Ethereal Packet Sniffer

Packet sniffers, sometimes referred to as protocol or network analyzers, are invaluable tools for network and systems administrators. With an abundance of commercial and free software products available, it may be difficult to choose a good product. This article describes Ethereal, . . .

Anthony Pell
Oct 09, 2001

A Beginner's Introduction to Network Security

Lately, the word "security" has been tossed around a lot in the news, IRC channels and elsewhere in the community. It seems that there's no end to viruses and script kiddies out there just waiting to get through the security on . . .

Anthony Pell
Oct 03, 2001

Denying Denial of Service

Denial-of-service (DoS) and distributed denial-of-service (DDoS) attacks have been around for years, but with reports that 4,000 DoS attacks are launched each week, it's clear the problem isn't close to being resolved. In fact, in a recent poll of Information Security . . .

Anthony Pell
Sep 28, 2001

Expert: Net security's a losing battle

The complexity of the Internet is increasing more rapidly than our ability to secure it, according to Internet security expert Bruce Schneier. At the opening of the annual Information Security Solutions Europe (ISSE) conference in London on Wednesday, Schneier, who is . . .

Anthony Pell
Sep 26, 2001

Analysts: Terrorists Will Use the Web

Although there have been no reported cases of cyberterrorism or hacks of corporate or U.S. government sites, companies must remain vigilant in the coming days, say analysts from the research firm Gartner. Soon after last week's horrific terrorist attacks on U.S. . . .

Anthony Pell
Sep 18, 2001

Automatic patching: Will it make the world safe from worms?

Worms and viruses often target specific vulnerabilities in common software. But what if the terms were reversed? Rather than attacking the vulnerability of software for malicious purposes, what if the worm or virus actually attempted to secure the software by applying . . .

Anthony Pell
Sep 13, 2001

Linux Network Security - Page 71

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