uncleflo
Registered since September 28th, 2017
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Tag selected: redhat.
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Find the certification that's right for you
Saved by uncleflo on February 7th, 2018.
Concentrate on the Red Hat Certified Architect skills you need: A Red Hat® Certified Architect (RHCA®) is a Red Hat Certified Engineer (RHCE®) or Red Hat Certified JBoss Developer (RHCJD) who has additionally attained Red Hat's highest level of certification. Earning RHCA is flexible. You can choose the set of eligible certifications beyond RHCE or RHCJD that best suit your professional needs, or you can follow one of our recommended concentrations below.
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ClearOS – OS for your Server, Network, and Gateway Systems
Saved by uncleflo on November 4th, 2016.
What is ClearOS - is an operating system for your Server, Network, and Gateway systems. It is designed for home, small and medium businesses etc. Know how ClearOS works. ClearOS is an operating system for your Server, Network, and Gateway systems. It is designed for homes, small to medium businesses, and distributed environments. ClearOS is commonly known as the Next Generation Small Business Server, while including indispensable Gateway and Networking functionality. It delivers a powerful IT solution with an elegant user interface that is completely web-based. Simply put.. ClearOS is the new way of delivering IT.
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44.2. Administrator Control of SELinux
Saved by uncleflo on March 26th, 2015.
In addition to the tasks often performed by users in Section 44.1, “End User Control of SELinux”, SELinux administrators could be expected to perform a number of additional tasks. These tasks typically require root access to the system. Such tasks are significantly easier under the targeted policy. For example, there is no need to consider adding, editing, or deleting Linux users from the SELinux users, nor do you need to consider roles. This section covers the types of tasks required of an administrator who maintains Red Hat Enterprise Linux running SELinux.
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Administrator Control of SELinux
Saved by uncleflo on March 26th, 2015.
Administrators can expect to do most of the same things that users do in Section 5.1 End User Control of SELinux, plus a number of additional tasks that are usually done only at the root level. Using the targeted policy makes tasks measurably easier for the administrator. For example, there is no need to consider adding, editing, or deleting Linux users from the SELinux users, nor do you need to consider roles.
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Managing Confined Services
Saved by uncleflo on September 12th, 2013.
This book provides assistance to advanced users and administrators when using and configuring Security-Enhanced Linux (SELinux). It focuses on Red Hat Enterprise Linux and describes the components of SELinux as they pertain to services an advanced user or administrator might need to configure. Also included are real-world examples of configuring those services and demonstrations of how SELinux complements their operation.
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libsemanage.semanage_exec_prog: Child process /sbin/setfiles did not exit cleanly. | Indefinite Retention
Saved by uncleflo on September 6th, 2013.
Today I ran yum on a new virtual machine and noticed this error in the output. A quick look at /proc/swaps shows that this machine does not have any swap space configured. I’m running RHEL 6.3 from the default image in a micro instance on AWS. So Let’s set up a 1GB swap file and turn it on.
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ConfigServer Security & Firewall
Saved by uncleflo on August 31st, 2013.
We have developed an SPI iptables firewall that is comprehensive, straight-forward, easy and flexible to configure To complement the ConfigServer Firewall (csf), we have developed a Login Failure Daemon (lfd) process that runs all the time and periodically (every X seconds) scans the latest log file entries for login attempts against your server that continually fail within a short period of time. Such attempts are often called "Brute-force attacks" and the daemon process responds very quickly to such patterns and blocks offending IP's quickly. Other similar products run every x minutes via cron and as such often miss break-in attempts until after they've finished, our daemon eliminates such long waits and makes it much more effective at performing its task.
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Install CSF/LFD Firewall on your Linux Server - Linux Brigade
Saved by uncleflo on August 31st, 2013.
The first thing on your mind when setting up a new Linux server (dedicated or VPS) is how you can increase security. One of the best tools in your bag of tricks should be the CSF (ConfigServer) LFD (Login Failure Daemon) firewall. CSF/LFD has their own script license, making it free of charge with no warranty or support. Before installing CSF, please disable other security applications such as denyhosts, fail2ban or cPanel’s cPHulk. Installation is a breeze and consists of the following commands:
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Saved by uncleflo on August 28th, 2013.
Deluge is a new BitTorrent client, created using Python and GTK+. It is intended to bring a native, full-featured client to Linux GTK+ desktop environments such as GNOME and XFCE. It supports features such as DHT (Distributed Hash Tables), PEX (µTorrent-compatible Peer Exchange), and UPnP (Universal Plug-n-Play) that allow one to more easily share BitTorrent data even from behind a router with virtually zero configuration of port-forwarding.
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Saved by uncleflo on August 27th, 2013.
A Unix daemon is a program that runs in the “background,” enabling you to do other work in the “foreground,” and is independent of control from a terminal. Daemons can either be started by a process, such as a system startup script, where there is no controlling terminal, or by a user at a terminal without “tying up” that terminal as the daemon runs. But which daemons can you safely play with? Which should you leave running?
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Saved by uncleflo on August 27th, 2013.
Who’s afraid of SELinux? Well, if you are, you shouldn’t be! Thanks to the introduction of new GUI tools, customizing your system’s protection by creating new policy modules is easier than ever. In this article, Dan Walsh gently walks you through the policy module creation process. A lot of people think that building a new SELinux policy is magic, but magic tricks never seem quite as difficult once you know how they’re done. This article explains how I build a policy module and gives you the step-by-step process for using the tools to build your own.
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Saved by uncleflo on August 27th, 2013.
The following section uses an actual example to demonstrate building a local policy module to address an issue with the current policy. This issue involves the ypbind init script, which executes the setsebool command, which in turn tries to use the terminal. This is generating the following denial:
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RHEL / CentOS Linux: Mount and Access NTFS Partition
Saved by uncleflo on August 23rd, 2013.
How to enable NTFS support on CentOS Linux version 5 or 6? How do I mount ntfs partition under RHEL 5 or 6?
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Red Hat | Open Source Training and Certification
Saved by uncleflo on August 7th, 2013.
Invest in your skills or the skills of your team with our hands-on, role-based training for IT professionals and developers. Master key tasks for Red Hat Enterprise Linux, JBoss Enterprise Middleware, Red Hat Enterprise Virtualization, and more. Stay connected with the latest Red Hat Training news via Twitter, Facebook, LinkedIn, and our Services Speak blog.
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2012 Red Hat Summit: SELinux For Mere Mortals
Saved by uncleflo on August 6th, 2013.
While Security-Enhanced Linux (SELinux) is an incredibly powerful tool for securing Linux servers, it has a reputation for being difficult to configure. As a result, many system administrators would simply turn it off. Fortunately, the incredible amount of work completed by the SELinux community in recent years has made SELinux much more system administrator-friendly. In this session, Thomas Cameron explains the basics of SELinux, which include configuring, analyzing, and correcting SELinux errors, as well as writing basic policies to enable non-SELinux-aware applications to work on SELinux-protected systems. Real-world examples will be used to better demonstrate how to use SELinux.
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Saved by uncleflo on July 14th, 2013.
I'm trying to use semanage command to configure certain elements of SELinux policy without requiring modification to or recompilation from policy sources under RHEL 6 server. But, I'm not able to find out this command and/or package name. How do I install semanage command under RedHat Enterprise Linux?
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Chapter 5. Working with SELinux - Red Hat Customer Portal
Saved by uncleflo on January 5th, 2013.
The following sections give a brief overview of the main SELinux packages in Red Hat Enterprise Linux; installing and updating packages; which log files are used; the main SELinux configuration file; enabling and disabling SELinux; SELinux modes; configuring Booleans; temporarily and persistently changing file and directory labels; overriding file system labels with the mount command; mounting NFS file systems; and how to preserve SELinux contexts when copying and archiving files and directories.
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Configuration - RPM Fusion
Saved by uncleflo on August 22nd, 2012.
RPM Fusion provides software that the Fedora Project or Red Hat doesn't want to ship. That software is provided as precompiled RPMs for all current Fedora versions and Red Hat Enterprise Linux 5 and 6; you can use the RPM Fusion repositories with tools like yum and PackageKit. RPM Fusion is a merger of Dribble, Freshrpms, and Livna; our goal is to simplify end-user experience by grouping as much add-on software as possible in a single location. Also see our FoundingPrinciples.
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