Linux Network Security - Page 78

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System Fingerprinting

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When someone with half a clue decides to attack your system, they will first try to identify the operating system. Not every attack proceeds this way -- script kiddies will probe huge address spaces looking for any system with a . . .

Anthony Pell
Jan 29, 2001

Fix for DNS software hole released

A vulnerability recently discovered in the software used in most DNS (Domain Name System) servers may be the most serious security threat yet found on the Internet, allowing hackers effectively to shut down ISPs and corporate Web servers as well as . . .

Anthony Pell
Jan 29, 2001

Microsoft outsources some DNS servers to Linux

Last week Microsoft's Web server became unavailable to many users first through router misconfiguration and later through a denial of service attack. Networking experts blamed Microsoft's problems on a network domain which they said featured all four of its domain name . . .

Anthony Pell
Jan 29, 2001

WHOIS Microsoft.com?

Several of Microsoft's high-profile Web sites remained inaccessible late Wednesday morning, a problem that has lasted nearly half a day and that may be the result of an attack. Since Tuesday night, the software and Internet giant has experienced . . .

Anthony Pell
Jan 24, 2001

Web Site Security and Denial of Service Protection

The challenge for successful public Web sites is to encourage access to the site, while eliminating undesirable or malicious traffic, and providing the necessary levels of sufficient security without creating constraining site limitations in performance or scalability. Disruption of service caused . . .

Anthony Pell
Jan 21, 2001

Defenses still weak against DDoS attacks

Mafiaboy, the Canadian teenager accused of launching a series of distributed denial of service attacks against a septet of the Internet's most popular sites last year, pleaded guilty Thursday to 56 of the 66 charges against him--just before his trial was . . .

Anthony Pell
Jan 19, 2001

Ramen Linux Worm Propagation

A self-propagating worm known as Ramen is currently exploiting well-known holes in unpatched Red Hat Linux 6.2 systems and in early versions of Red Hat 7.0. In addition to scanning for additional systems and propagating to vulnerable systems, the worm also . . .

Anthony Pell
Jan 18, 2001

Network Security at the Dawn of the New Millenium

By the time this article appears in print, the world will be about to enter - or will have just entered - the 21st Century. On January 1, 2001, humanity will still not have fulfilled some of the more flamboyant predictions . . .

Anthony Pell
Jan 18, 2001

F-Secure Ramen Virus Descriptions

Ramen is an Internet worm, which propagates from a Linux based server to another. It works in a similar way as the Morris Worm that was widespread in 1989. Ramen affects systems running a default installations of Red Hat Linux . . .

Anthony Pell
Jan 18, 2001

Advanced Host Detection - Techniques To Validate Host-Connectivity

This paper will attempt to describe techniques used to discover heavily filtered and firewalled hosts, that will not answer to standard PING responses. It is assumed that the reader has a firm knowledge of the major internet protocols (TCP,IP,UDP,ICMP). . . .

Anthony Pell
Jan 18, 2001

Asta Networks claims cure for DoS attacks

Asta Networks will announce Wednesday it has developed router-based software that can detect Internet denial-of-service (DoS) attacks within moments, giving targeted companies precious time to react. The Seattle-based company's software detected a series of denial-of-service attacks over the Internet between Christmas . . .

Anthony Pell
Jan 17, 2001

Net worm hobbles Linux servers

An Internet worm cobbled together from generally available hacking tools has compromised hundreds, perhaps thousands, of Linux servers by using two well-known security flaws in applications set up during the default installation of Red Hat Linux software.. . .

Anthony Pell
Jan 17, 2001

Running Snort on IIS Web Servers: Part I

Martin Roesch developed Snort in 1998 for Unix platforms. Dubbing it a "Lightweight Intrusion Detection System," Martin made the tool open source and the number of people using Snort has been growing ever since. In the summer of 2000, Mike Davis . . .

Anthony Pell
Jan 17, 2001

UUNet still pole-axed

Five days after being brought to its knees by spam UUNet's service is still struggling to get back to normal. In a statement issued this morning UUNet said its customers in the UK "may continue to experience some delays in email . . .

Anthony Pell
Jan 16, 2001

E-Commerce Unleashed

Dot-com businesses may be falling by the wayside, but the percentage of commerce happening via the Web continues to grow. Meanwhile, hundreds of millions of cellular subscribers worldwide are gaining access to new wireless data choices, including Web-enabled cell phones, handheld . . .

Anthony Pell
Jan 15, 2001

IRC Attack Linked to DoS Threat

Recent vicious cyberattacks on IRC services have now been linked to a National Infrastructure Protection Center security warning that advised systems administrators to protect their systems against a potential widespread distributed denial of service attack over New Year's weekend. . . .

Anthony Pell
Jan 12, 2001

I don't think I really love you... or writting internet worms for fun and profit

Over year ago, with couple of friends, we started writing a project, called 'Samhain' (days ago, on packetstorm, I noticed cute program with same name - in fact it's not the same app, just a coincidence ;). We wanted to see . . .

Anthony Pell
Jan 11, 2001

Biometrics - What You Need to Know

Biometrics have garnered increasing attention and backing in the last few years. We are promised a utopian existence: never again will you forget your password or need to remember your access card to get into the building. Unfortunately, it isn't quite . . .

Anthony Pell
Jan 10, 2001

Romanian hacker bombs chat network

A Romanian hacker has launched a major distributed denial of service (DDoS), forcing one of the largest IRC (Internet Relay Chat) networks, Undernet, to shut down much of its service, system administrators said Monday.. . .

Anthony Pell
Jan 09, 2001

Search and Seizure Evidence Retrieval and Processing

In addition to photographs and sketches of the crime scene, a detailed accounting of all computer evidence is required. The search and seizure evidence log should incude brief descriptions of all computers, devices or media located during the search for evidence. . . .

Anthony Pell
Jan 09, 2001

Linux Network Security - Page 78

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