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Linux security guide: Linux, open source security tools and tips
Start hardening your Linux servers with this guide to essential tools and applications for Linux security, including SELinux, Nagios, firewalls and more. Learning Guide
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Nessus Technical Guide
Nessus Technical Guide Learning Guide
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Google to phase out Windows for Linux, Mac OSes
Rumor has it that Google is ditching Microsoft Windows for Linux and Mac OSes, citing security issues due to the Aurora attacks that targeted a flawed Internet Explorer version. News | 01 Jun 2010
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One million Linux kernels booted by Sandia researchers using virtualization and HPC
Sandia researchers announced that they have booted one million Linux kernels using virtual machines. The project focus was to model botnets, but has other uses as well. News | 05 Aug 2009
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Red Hat Enterprise Linux 5.3 released
Red Hat Enterprise Linux 5.3 was released on January 20, with up-to-date security features and enhanced virtualization, OpenJDK, and Intel Nehalem processor support. RHEL 5 is more secure than RHEL 4, with the company issuing fewer advisories in vers... News | 22 Jan 2009
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Open source growth dims LAMP stack to symbolic status
LAMP's status as the undisputed open source stack has dimmed to a largely symbolic role as the number of open source applications has expanded. Article | 16 Nov 2008
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Automated tool at LinuxWorld reduces security risk
A Trusted Computer Solutions security tool helps protect Linux servers from attack. The tool will be featured at the 2008 LinuxWorld show. Article | 04 Aug 2008
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LinuxWorld preview: IBM engineer touts SELinux
SELinux has made strides in protecting systems from intrusion by unauthorized access but its lack of user-friendliness remains a weakness. Article | 03 Aug 2008
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Canonical beefs up Ubuntu with new server, desktop version
Canonical has beefed up Ubuntu with the new 8.04 Long-Term Support for desktops and servers. New features include Active Directory, virtualization and enhanced security. Article | 22 Apr 2008
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Red Hat, IBM partner on mainframe security
Government customers will be the first to benefit from new support and security enhancements for Red Hat Linux running on IBM mainframes. Article | 10 May 2007
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Firms find open source way to save over HP OpenView
For one-tenth the cost of systems management software from Hewlett-Packard and the like, IT managers chose an outsourced solution based on the open source Nagios stack. Article | 09 Oct 2006
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Mozilla still looking into Firefox flaw claims
Although two hackers confessed that the JavaScript vulnerability they found was a hoax, Mozilla still wants to be sure. Article | 09 Oct 2006
- See More: News on Linux security risks and threats
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Improving security vulnerabilities in open source Web applications
Hackers thrive on exploiting open source Web application source code. But these tactics can protect your corporate applications from common security vulnerabilities and breaches. Tip
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Physical security threats to your Linux systems
Strong Linux network security can be meaningless if physical security is compromised. In this tip, a security expert outlines some common Linux physical security threats. Tip
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Common Linux security policy management gaps
Linux security is commonly overlooked in IT security policies, especially when management is out of touch with what’s happening on the ground. Tip
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Common security flaws to check for on your Linux-based Web systems
Your Linux server may have Web application-related security vulnerabilities that should be checked out and repaired. These can include passwords, PHP code injection, weak file and directory permissions and outdated Apache and PHP versions. Learn what... Tip
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Using nmap for Linux administration and security
The open source tool nmap is ideal for network troubleshooting, scanning and auditing. The tool can be used to identify devices on the network as well as the services running on them. It can also identify advanced information, such as operating syste... Tip
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A look at real-world exploits of Linux security vulnerabilities
From unprotected NetBIOS shares, null sessions in Samba, to poorly configured FTP servers, your Linux system may be open and waiting for hackers. Learn how hackers can get into your Linux servers through these weaknesses and what you can do to secure... Tip
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Using OpenSSH for secure network tunnels on Linux
SSH is secure enough to be used across nonsecure private and public Internets. Learn the basics of SSH execution and how to implement and optimize SSH tunnels with Linux. SSH tunneling features allow remote traffic to be sent through the tunnel, expa... Tip
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Securing your Linux server with iptables
Harden your Linux server security with this tutorial on configuring the rules for iptables in your firewalls. See samples of code for rules and iptables, as well. Tip
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Setting up SSH2 on Red Hat Enterprise Linux
Find out how to set up SSH2 (Secure Shell) on Red Hat Enterprise Linux (RHEL), using encryption keys instead of passwords in this tutorial. You can use this with either RHEL 4 or RHEL 5. Tip
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Linux security help: Nagios with BMC Patrol, setting up SSH and more
A Linux security expert describes how to configure Nagios with BMC Patrol, gives non-platform-specific help for setting up Secure Shell (SSH) and more in this interview. Tip
- See More: Tips on Linux security risks and threats
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Compiling OpenSSH on Feisty Fawn
An Ubuntu expert describes where in the process of compiling OpenSSH on Feisty Fawn a reader missed a step. Ask the Expert
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Setting up SSH for remote, secure server access
A Linux security expert gives non-operating system specific advice on setting up Secure Shell (SSH) for remote access from a server. Ask the Expert
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SquidGuard as Linux proxy for Windows XP
A Linux security expert recommends a helpful SquidGuard tutorial for a user having trouble running redirec_program /usr/bin/squidGuard. Ask the Expert
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Securing Fedora Core 5 against attackers
A Linux security expert recommends several best practices for hardening your Fedora Core 5 proxy server. Ask the Expert
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Alert vs. log in the Snort /var/log/snort directory
A Linux security expert explains that the difference between the Snort alert and log logs in the Snort /var/log/snort directory is based on how rules are written. Ask the Expert
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Running Nagios on RHEL 5 or Solaris 10
A security expert recommends using a Linux-based operating system, like Red Hat, with open source network monitoring tool Nagios. Ask the Expert
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Reporting Nagios data to BMC Patrol
A security expert describes how to configure open source network monitoring tool Nagios so that data alerts, reports and other information generated are sent to BMC Patrol, which will be used as an alert tool. Ask the Expert
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Monitoring open ports on RHEL 5
A Linux security expert describes how to determine which ports are open in Red Hat Enterprise Linux 5 (RHEL 5) and how to figure out if your ports have been compromised by an attack. Ask the Expert
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Scanning a compromised Fedora server
Security expert James Turnbull explains how to determine if your server has been compromised and recommends some scanning tools. Ask the Expert
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Locking down open relays
A security expert recommends two tools to determine if your mail server is an open relay and has been compromised. Ask the Expert
- See More: Expert Advice on Linux security risks and threats
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Improving security vulnerabilities in open source Web applications
Hackers thrive on exploiting open source Web application source code. But these tactics can protect your corporate applications from common security vulnerabilities and breaches. Tip
-
Physical security threats to your Linux systems
Strong Linux network security can be meaningless if physical security is compromised. In this tip, a security expert outlines some common Linux physical security threats. Tip
-
Linux security guide: Linux, open source security tools and tips
Start hardening your Linux servers with this guide to essential tools and applications for Linux security, including SELinux, Nagios, firewalls and more. Learning Guide
-
Common Linux security policy management gaps
Linux security is commonly overlooked in IT security policies, especially when management is out of touch with what’s happening on the ground. Tip
-
Google to phase out Windows for Linux, Mac OSes
Rumor has it that Google is ditching Microsoft Windows for Linux and Mac OSes, citing security issues due to the Aurora attacks that targeted a flawed Internet Explorer version. News
-
Common security flaws to check for on your Linux-based Web systems
Your Linux server may have Web application-related security vulnerabilities that should be checked out and repaired. These can include passwords, PHP code injection, weak file and directory permissions and outdated Apache and PHP versions. Learn what... Tip
-
One million Linux kernels booted by Sandia researchers using virtualization and HPC
Sandia researchers announced that they have booted one million Linux kernels using virtual machines. The project focus was to model botnets, but has other uses as well. News
-
Using nmap for Linux administration and security
The open source tool nmap is ideal for network troubleshooting, scanning and auditing. The tool can be used to identify devices on the network as well as the services running on them. It can also identify advanced information, such as operating syste... Tip
-
A look at real-world exploits of Linux security vulnerabilities
From unprotected NetBIOS shares, null sessions in Samba, to poorly configured FTP servers, your Linux system may be open and waiting for hackers. Learn how hackers can get into your Linux servers through these weaknesses and what you can do to secure... Tip
-
Using OpenSSH for secure network tunnels on Linux
SSH is secure enough to be used across nonsecure private and public Internets. Learn the basics of SSH execution and how to implement and optimize SSH tunnels with Linux. SSH tunneling features allow remote traffic to be sent through the tunnel, expa... Tip
- See More: All on Linux security risks and threats
About Linux security risks and threats
Knowing the different layers of Linux security threats, including MAC address attacks and attacks on the Dynamic Host Configuration Protocol (DHCP), can help keep your Linux environment secure. Find out the best methods to protect Linux servers and networks from security issues, including malware, common flaws and persistent Linux security threats. This topic also covers application security, phishing, denial-of-service attacks, information security, kernel vulnerabilities, Nessus, malicious code, intrusion detection and kernel security features.