Linux.com

NewsVac: News from around the Web

  • Sshpass: non-interactive SSH password authentication 1 week, 5 days ago
    SSH’s (secure shell) most common authentication mode is called “interactive keyboard password authentication”, so called both because it is typically done via keyboard, and because OpenSSH takes active measures to make sure that the password is, indeed, typed interactively by the keyboard.

    Sometimes, however, it is necessary to fool SSH into accepting an interactive password non-interactively. This is where sshpass comes in ....

  • Pash - cross platform PowerShell is out in the wild! Announcement. 1 month, 1 week ago
    PowerShell open source reimplementation for “others” (Mac, Linux, Solaris, etc…) and Windows (including Windows Mobile and Windows CE)
  • Linux users answer the call: Ubuntu wireless-adapter glitch resolved 4 months ago
    "The sage advice of Linux community members gets my Linksys wireless adapter working in Ubuntu 7.10 in just a few minutes."
  • The perfect server - Ubuntu Gutsy Gibbon 6 months, 4 weeks ago
    This tutorial shows how to set up a Ubuntu Gutsy Gibbon (Ubuntu 7.10) based server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable), Postfix mail server with SMTP-AUTH and TLS, BIND DNS server, Proftpd FTP server, MySQL server, Courier POP3/IMAP, Quota, Firewall, etc. This tutorial is written for the 32-bit version of Ubuntu Gutsy Gibbon, but should apply to the 64-bit version with very little modifications as well.
  • Microsoft responsible for nearly half of IT jobs 6 months, 4 weeks ago
    A study sponsored by the software giant found global IT spending will top $1.24 trillion in 2007, thanks in large part to itself ....
  • Disk based backups with Amanda on Debian Etch 7 months, 3 weeks ago
    "This document describes how to set up Amanda (The Advanced Maryland Automatic Network Disk Archiver) on Debian Etch ... The resulting system provides a flexible backup system with many features. It will be able to back up multiple hosts via network to various devices. I chose the disk based backup for this howto .... "
  • Central Log Management System 8 months, 1 week ago
    "Central Log Management System is a simple web based logging system which allows logging all syslog messages from various Network Devices, Unix, Linux, Solaris and Windows Servers. This allows the visibility of logs from all these devices in one single interface ...."
  • The perfect start with Smoothwall Express 3.0 8 months, 1 week ago
    "Smoothwall Express is an internet firewall, which allows you to protect your network, as well as providing NAT functionality. It is ease to use and configurable via a web-based GUI. This open source firewall distribution requires absolutely no knowledge of Linux to install or use .... "
  • Chrooted SSH/SFTP tutorial for Debian Etch 8 months, 1 week ago
    "This tutorial describes two ways how to give users chrooted SSH access..."
  • Preventing domain expiration 8 months, 2 weeks ago
    Internet users have an equally pervasive -- and oddly similar -- problem: accidental Internet domain expiration. Your Linux user group or other nonprofit group (or, hey, even your company) is relying on some vaguely defined chain of command to make sure the domain keeps getting renewed, making the assumption everything's fine as long as no disaster has yet happened (which tactic is called "management by exception" in business school -- usually just before they cue the ominous music). Somebody drops the ball, the domain everyone's relying on expires when nobody's looking, and when the dust settles you find that a domain squatter's grabbed it. Yes, there are companies that make domain snatching their core business. They do well at it, too. Too well for my taste.
  • Configure local and remote system logging 9 months, 2 weeks ago
    "A Linux machine has a logging system which keeps track of what everything is doing. Anytime you authorize with sudo it gets logged. Anytime you (or someone else) connects via ssh it gets logged. Apache logs connections, mail servers log emails sent and refused. Pretty much everything keeps a log of what it is doing so you can later troubleshoot it or simply have a record of it.For those that are security minded it may not be a bad idea to keep duplicate of your logs by sending them not only to the local machine but to a remote machine as well .... "
  • The most useful command line tools? 10 months, 1 week ago
    E. Stride writes "Our readers and experts helped us create our first guide to the 50 most-used Linux command line tools. This wildly popular guide needs updating, so we asked our inner circle to pitch in again. We're looking for the most important-most used tools for the command line."
  • Entering a safe mirror when logging in with unionfs and chroot 10 months, 3 weeks ago
    "This environment is a exact copy (mirror) of the system you're working on. Because you're in safe copy of the real system, you can do whatever you like, it will never change the system, everything stays inside the cache (the readwrite branch) ... "
  • A Discussion on Grub Security 10 months, 3 weeks ago
    "Today’s post isn’t so much a tutorial but more of a discussion or educational topic on grub. It was inspired by the original post here and continued discussion in the comments. I thought I would outline some suggestions on securing the grub boot loader and why Ubuntu adding a “rescue mode” entry in grub is not a security flaw and is really not any less secure than any other distribution ... "
  • Open-source remote access technology advances 10 months, 4 weeks ago
    NoMachine has achieved a major new release of its remote access software for thin clients and other devices that run remotely hosted applications over low-bandwidth networks. NX 3.0 adds new connection options, handy per-server and per-user profiles, support for x86_64, and enhanced scriptability, the company said.
  • More News

Linux.com : System Administration

Keeping your SSH connections alive with autossh

By Ben Martin on May 16, 2008 (4:00:00 PM)

With autossh, you can monitor your SSH connections and restart them if they stop sending traffic or SSH exits abnormally. This makes autossh perfect for keeping secure port forwarding available.

Read the Rest - 1 comment

Ubuntu 8.04: Upgrade or clean install?

By Joe Barr on May 08, 2008 (7:00:00 PM)

Which path should you follow? Should you take advantage of Ubuntu's package manager and use it to upgrade your system to the latest 8.04 Hardy Heron release, or should you download a CD or DVD ISO image and do a clean install? Common wisdom says that doing a clean install is the better, safer course of action. There may be a little extra work involved configuring everything once the latest and greatest is installed, but that's nothing compared to the pain of an update gone wrong, according to traditional thinking. But that cautious approach may no longer be necessary.

Read the Rest - 60 comments

Administer servers remotely with Web Console

By Federico Kereki on May 02, 2008 (9:00:00 AM)

If you need to administer a remote server but don't feel like installing a complete, complex application like Webmin, try Web Console, a modern, over-the-Web, AJAX-based solution that's easy to configure and use.

Read the Rest - 12 comments

Installing and tracking software updates with toast

By Ben Martin on April 23, 2008 (4:00:00 PM)

Using toast takes the burden out of building, installing, and keeping track of software built from source. You can use toast to build and maintain software installed in your /home directory as a regular user, or to set up software for all users in /usr/local. toast can obtain packages over HTTP, HTTPS, FTP, and via SSH and CVS. It can handle most archive formats, as well as .rpm and .deb packages.

Read the Rest - 1 comment

Creating a VPN with tinc

By Ben Martin on April 11, 2008 (4:00:00 PM)

With tinc you can create a virtual private network (VPN) that lets you communicate between two machines over an insecure network such as the Internet with all of your traffic encrypted between the hosts on your virtual network.

Read the Rest - 9 comments

Inspecting disk IO performance with fio

By Ben Martin on April 09, 2008 (9:00:00 AM)

Storage performance has failed to keep up with that of other major components of computer systems. Hard disks have gotten larger, but their speed has not kept pace with the relative speed improvements in RAM and CPU technology. The potential for your hard drive to be your system's performance bottleneck makes knowing how fast your disks and filesystems are and getting quantitative measurements on any improvements you can make to the disk subsystem important. One way to make disk access faster is to use more disks in combination, as in a RAID-5 configuration.

Read the Rest - 18 comments

Ask Linux.com

By Linux.com Staff on March 26, 2008 (8:00:00 AM)

Got a question about Linux or free and open source software? You've come to the right place. In the left column of every page, directly below the Distributions link, you'll find a link labeled "Get Linux help" that will take you to the Linux.com discussion forums -- your best bet for getting Linux-related troubleshooting and advice, whether the issue involves hardware, software, or neither. Here are some examples of threads from recent days -- some with answers, and some still looking for solutions.

Read the Rest - 3 comments

LinMin announces proprietary provisioning for FOSS networks

By Bruce Byfield on March 25, 2008 (8:00:00 PM)

Developing a business model around free and open source software (FOSS) can be a delicate balancing game. Many companies in this space opt for models in which revenue comes from sources such as services, rather than the software itself. However, the recently announced LinMin is taking a different approach with a new appliance and imaging appliance: Although it runs and works on FOSS, LinMin's software is proprietary. The company's reasons for this practice raise several core issues about the relationship between FOSS and proprietary software on one hand and business priorities on the other.

Read the Rest - 8 comments

Manage MySQL remotely with phpMyAdmin

By Federico Kereki on March 25, 2008 (8:00:00 AM)

Odds are, if you design Web sites with a database back end, you've worked with MySQL. You can manage this database from the command line, but it's not very user-friendly. Using the graphical tool phpMyAdmin helps, but not all Web hosting providers offer it or allow you to install it on the server. Fortunately, you can install it on your own box and manage several MySQL databases remotely at the same time, without having to install anything anywhere else.

Read the Rest - 4 comments

Install Anyterm for remote terminal access without SSH

By Ben Martin on March 19, 2008 (8:00:00 AM)

Anyterm allows you to have secure terminal access to a server without needing any special software on a client machine beyond a Web browser. For example, with Anyterm you can open a terminal into your server from an Internet cafe. Because Anyterm uses a pseudo-terminal for communication with the shell, you can run most command-line tools from an Anyterm terminal running inside a Web browser.

Read the Rest - 19 comments

Multifunction copiers in a Linux network

By Keith Winston on March 13, 2008 (7:00:00 PM)

In many organizations, copiers get little respect. Often relegated to a break room or storage closet, they are underutilized and underappreciated, and get no attention from the IT department. Yet, multifunction copiers can play a critical role in reducing operating costs and become a hub for document processing.

Read the Rest - 11 comments

Automounting FUSE filesystems

By Ben Martin on March 04, 2008 (4:00:00 PM)

One of the main things that gets annoying with FUSE, or Filesystem in Userspace, is that it won't automatically mount a filesystem when you first attempt to access the filesystem. This means you must manually track mountpoints and specify what program to run in order to mount each FUSE filesystem. Placing the exact commands to mount each FUSE filesystem into shell scripts can make things a little easier, but with afuse, you can mount FUSE filesystems on demand without the need for any explicit mounting.

Read the Rest - 10 comments

Using siproxd to allow VoIP through a firewall

By Ben Martin on February 25, 2008 (7:00:00 PM)

Session Initiation Protocol (SIP) is a popular open standard for implementing Voice over Internet Protocol (VoIP) telephone calls. Siproxd is a SIP proxy server that can help you with network connectivity issues for SIP clients behind firewalls.

Read the Rest - Post Comment

Get rid of stowaway packages with GNU Stow

By David A. Harding on February 22, 2008 (9:00:00 AM)

The installation instructions in most free software reviews aren't enough. If you decide a package sucks, how do you get rid of it? If a package rocks, how do you upgrade it? GNU Stow, a package manager for packages you compile and install yourself, provides an easy answer to both questions.

Read the Rest - 18 comments

Porticus brings point-and-click free software installs to Mac OS X

By Nathan Willis on February 21, 2008 (9:00:00 PM)

One undeniable sign of progress among Linux distributions is the proliferation of easy-to-use, graphical package management applications. Tools like yum, Synaptic, and CNR are the rule these days rather than the exception. Mac OS X has free software fans, and a well-maintained collection of software at MacPorts, but for a long time those fans have been limited to the command line for finding, installing, and updating the offerings. Now a new utility called Porticus has arrived to present a slick GUI interface to the MacPorts collection, and it could make some converts.

Read the Rest - 7 comments

Lguest: A simple virtualization platform for Linux

By M. Shuaib Khan on February 20, 2008 (4:00:00 PM)

The Linux kernel has merged three hypervisors into its mainline tree, starting with KVM in 2.6.20, and continuing with Xen and lguest in the 2.6.23 release of the kernel. Hypervisors let users run multiple operating systems on a host system. Lguest is the simplest of the three in terms of usability and implementation, which makes it a good candidate for helping you learn how virtualization works.

Read the Rest - 4 comments

Running Debian GNU/Linux from an encrypted USB drive

By Avi Rozen on February 19, 2008 (4:00:00 PM)

You're probably familiar with the live CD concept -- a fully functional operating system on a CD that can be run on any computer that boots from its optical drive, without affecting the one(s) already installed. In a similar vein, you can set up Linux to run from a USB hard drive drive on any computer that can boot from USB. The live system offers automatic detection and configuration of the display adapter and screen, storage devices, and other peripherals. A bootable USB drive can run a mainstream Linux distribution such as Debian GNU/Linux, and can be secured, personalised, upgraded, and otherwise modified to suit your needs.

Read the Rest - 23 comments

Using MySQL as a filesystem

By Ben Martin on February 15, 2008 (4:00:00 PM)

With MySQLfs you can store a filesystem inside a MySQL relational database. MySQLfs breaks up the byte content of files that you store in its filesystem into tuples in the database, which allows you to store large files in the filesystem without requiring the database to support extremely large BLOB fields. With MySQLfs you can throw a filesystem into a MySQL database and take advantage of whatever database backup, clustering, and replication setup you have to protect your MySQLfs filesystem.

Read the Rest - 26 comments

Discover the possibilities of the /proc directory

By Federico Kereki on February 15, 2008 (9:00:02 AM)

The /proc directory is a strange beast. It doesn't really exist, yet you can explore it. Its zero-length files are neither binary nor text, yet you can examine and display them. This special directory holds all the details about your Linux system, including its kernel, processes, and configuration parameters. By studying the /proc directory, you can learn how Linux commands work, and you can even do some administrative tasks.

Read the Rest - 26 comments

Small-scale SNMP reporting

By Colin Beckingham on February 12, 2008 (7:00:00 PM)

The Simple Network Management Protocol (SNMP) is a useful tool for examining the state of devices on a network. The open source world offers a number of consoles designed to manage the information from these devices and produce reports. However, there are circumstances in which access to the devices at a more customizable level is more beneficial. Given that the programming involved is minimal, it is worth considering custom applications for SNMP reporting.

Read the Rest - 7 comments

  |<   <   1   2   3   4   >   >|

 
Tableless layout Validate XHTML 1.0 Strict Validate CSS Powered by Xaraya