Linux Network Security - Page 88

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Network Security With Linux 2.4

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The Linux 2.4 kernel is just around the corner and, in theory, is supposed to be coming to a computer near you around the time you read this article. . . .

Anthony Pell
May 06, 2000

There but for the Grace of Bill....

Here's an analysis of the recent Microsoft worm, and an interesting commentary on it's effect on Linux users. "Guess what? No matter what you've heard about Microsoft Outlook, the situation is basically the same as it is in Linux. . . .

Anthony Pell
May 05, 2000

Big Brother Vulnerability

Notice - an exploitable buffer overflow has been reported in the Big Brother server (bbd). If you're running BB, please either update your version, apply the fix enclosed, and run BB as a non-root user! If you have . . .

Anthony Pell
May 05, 2000

Sendmail protection for ILOVEYOU worm

Included here is information that can be added to your sendmail configuration to protect your internal users from the ILOVEYOU worm from spreading, as well as more information from this bugtraq post. Be sure to note that variations . . .

Anthony Pell
May 04, 2000

Hackers release new DoS tool

The denial of service attacks that took down Yahoo, eBay, and other major Web sites has apparently inspired computer vandals to construct more attack tools. There’s a new tool called “mstream,

Anthony Pell
May 04, 2000

Linux Security: TCP-Wrappers?

Linux, like any operating system, is only as secure as you make it. Any computer that is connected to a network, and especially the Internet, is susceptible to being compromised. Security is an issue that affects everyone from home users . . .

Anthony Pell
May 04, 2000

Detecting and Decoding MStream Traffic

Elliot Turner speaks about the recent "MStream" DDoS attack, and attack signatures he's explored to detect the presence of the vulnerability. "Using the attack signature modules and SNP-L scripts included in this write-up, one can detect and decode "mstream" network . . .

Anthony Pell
May 02, 2000

The "mstream" distributed denial of service attack tool

Another Distributed Denial of Service (DDoS) attack tool has been released. David Dittrich heads up an analysis of the tool, in much the same way as his previous six DDoS analyses. "mstream is more primitive than any of . . .

Anthony Pell
May 01, 2000

IDing remote hosts, without them knowing

Lance Spitzner tells us about IDing remote hosts, without them knowing using Passive Fingerprinting. "One of the challenges of network security is learning about the bad guys. To understand your threats and better protect against them, you have to . . .

Anthony Pell
May 01, 2000

Insecure.Org announces immediate, free availability of Nmap Security Scanner 2.50

Nmap is a utility for network exploration or security auditing. It supports ping scanning (determine which hosts are up), many port scanning techniques (determine what services the hosts are offering), and TCP/IP fingerprinting (remote host operating system identification). More than . . .

Anthony Pell
May 01, 2000

Linux back door slammed

MSNBC seems to have a comment on the "back door" recently found in a Red Hat package. "It makes a change to see a story about a gaping security hole in a Linux package for a change, rather than . . .

Anthony Pell
Apr 27, 2000

AboveNet vows to nab Web attackers

Internet service provider AboveNet Communications Inc. and law enforcement officials are on the hunt for the cyberattackers who halted traffic on Tuesday to almost 1,000 businesses that contract Internet services and Web-page hosting through the company. At 9:45 a.m. Pacific . . .

Anthony Pell
Apr 26, 2000

Linux Security Flaw Detailed

Back-door in Red Hat Linux? "Internet Security Systems is warning Linux users of a back-door security flaw that carries ISS's highest danger rating." The story explains, "a back-door vulnerability exists for any user running a full version of Red Hat . . .

Anthony Pell
Apr 25, 2000

Red Hat open to backdoor password

A team of Internet security researchers say they’ve found a serious security hole in the most popular distribution of the Linux operating system. According to Internet Security Systems Inc., there’s a backdoor account in Red Hat’s Linux that would let . . .

Anthony Pell
Apr 25, 2000

Make your software behave: CGI programming made secure

In a short span of years (since 1992, in fact), the Web has exploded from nonexistence to the gazillions of Web sites found today. As the Web has grown, so too have the capabilities of Web technologies. This article focuses . . .

Anthony Pell
Apr 22, 2000

Malicious program attacks Real servers

A group of South American computer security researchers earlier today released a program, called realdie.exe, that can knock virtually any RealNetworks video server offline. . . .

Anthony Pell
Apr 21, 2000

DoS attacks: What really happened

More details are emerging about last February's massive denial-of-service attack, and they continue to paint a dramatic picture of how helpless the Net's biggest Web sites really were. . . .

Anthony Pell
Apr 20, 2000

Teen Hacker Arrest Masks True Net Peril

This past weekend, a Canadian teen who calls himself "Mafiaboy" was arrested in the Montreal area and charged with at least one of the February denial-of-service (DoS) hacker attacks that blocked access to such popular Web sites as Yahoo!, Amazon . . .

Anthony Pell
Apr 20, 2000

Update: Canadian police arrest suspect in major Web attacks

Canadian police today said an arrest has been made in connection with a number of debilitating attacks on some of the Internet's most popular Web sites earlier this year. A 15-year-old boy known online as "Mafiaboy" has been accused of . . .

Anthony Pell
Apr 19, 2000

Arrest Made In February Web Attacks

Canadian police on Wednesday are expected to announce details of an arrest made in connection with February's blocking of access to some of the Internet's most popular sites, and U.S. television said the suspect is a 15-year-old known online as . . .

Anthony Pell
Apr 19, 2000

Linux Network Security - Page 88

Harnessing Proxies for Enhanced Threat Intelligence: A Guide with Open Source Tools

Understanding HTTP Proxy Servers: A Vital Linux Network Security Tool

Exploring Vulnerability Scanners: Tools & Strategies for a Secure Network