Showing posts with label LINUX. Show all posts
Showing posts with label LINUX. Show all posts

Vinagre remote desktop connection for Linux


Do you administer Linux machines? Or do you just need the ability to remotely connect to your Linux machines from other Linux machines? If so, are you looking for an easy solution for this task? There is one, if you are a fan of the GNOME desktop.
Vinagre is a remote desktop tool with plenty of features and ease of use for just about any level of user. It’s enjoying release 2.30.1 so it’s quite mature. In this article I will show you how to install and use the default GNOME remote desktop tool.
Features
Vinagre offers enough features to help make it stand out among other rdp clients:
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See what images are being viewed on your network with driftnet


I want to preface this article by saying I am not, in any way advocating spying on your users. With that said, there are times (and reasons) why you might need to see what images are being viewed on your network. Whether it be an end user who is viewing content that goes against specific company policies or, worse, against the law. When this happens, you might have need or cause to see just what is being viewed from your LAN. When this is the case there is a handy tool for that called Driftnet.
Driftnet was inspired by the old Apple program EtherPEG and works by watching TCP streams for images and MPEG audio streams. As it listens I dumps the images into a user configured directory and/or it can display the images within a window as they are captured. In this article I will show you how to install and use Driftnet.
Installation
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Connect remotely from Linux with Terminal Server Client


I do a lot of remote work throughout the day and to make those connections I use different tools. Between LogMeIn andTeamViewer I have remote support covered. But when I need to connect to a machine such as a Terminal Server, where do I turn? Generally speaking I turn to the Linux tool Terminal Server Client (tsclient.) This tool makes connecting to unattended remote servers a snap — and it workswith different protocols.
Features
Just what does tsclient offer? Take a look at this short list of features:
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Set up a Linux media server


Do you have multiple machines around your house that would like to share a centralized server for multi-media? Having such a server for music allows for consolidation, ease of use, and space saving on client PCs. Of course to many users, the idea of setting up a multi-media server sounds like it would be a nightmare…especially on the Linux platform. That couldn’t be further from the truth.
The Firefly Media Server (formerly mt-daap) is a fast DAAP server that is simple to install and even easier to configure. Firefly resides on a single Linux machine that doesn’t have to be a powerhouse. In fact, you can install this lightweight server on Ubuntu Server and you’re almost ready to go. In this article you will see how to do just that – install and configure Firefly Media Server on Ubuntu Server.
Features
The Firefly server has all of the features you will want in a DAAP server:
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Apache troubleshooting tips


How many times have you installed a LAMP server only to find Apache doesn’t seem to want to run right? Or you install a new module only to see Apache try to download pages as file, instead of displaying them on screen?
There are a hundred and one thousand things that can go wrong with any web server installation. From a fresh installation to an installation that has been running for a long time, you never know when something is going to cause your web server to go astray. When it does happen, it’s always nice to know that, usually, Occam’s Razor applies.
In this tutorial you will find some advice that will help you through some of the more common issues that can pop up with an Apache web server.
Is your server actually running?
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Migrate users from one Linux machine to another


Have you ever had a need to migrate current running Linux users from installation to another? That would be a simple task if the user count was low. But  what happens when the user count is in the hundreds? What do you do then? If you’re not using LDAP, you know you will have to migrate the users’ data, passwords, etc from the old machine to the new. Believe it or not, this is just a matter of a few commands – not necessarily simple commands, but it’s not as complex as you would think.
In this article I am going to show you how to make this migration so your Linux users do not loose their data and their passwords are all retained.
What we migrating
The list is fairly simple:
  • /etc/passwd - Contains information about the user.
  • /etc/shadow - Contains the encrypted passwords.
  • /etc/group - Contains group information.
  • /etc/gshadow - Contains group encrypted passwords.
  • /var/spool/mail - Contains users email (the location will depend upon the mail server you use).
  • /home/ - Contains users data.
Unfortunately these files can not simply be copied from one machine to another – that would be too easy.  Just make sure you enter the following commands correctly.
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Set up a Linux VPN Server with Gadmin-VPN-Server


here are so many reasons why a VPN Server makes perfect sense. For one, anyone with the credentials and the address can then gain access to the internal network from an external source. This enables users to work remotely and still have access to resources they wouldn’t otherwise have access to. There are obviously plenty of ways to set up a VPN server, but one of the most user-friendly means of setting up a VPN server on Linux is with the help of the Gadmin-VPN-Server tool.
The Gadmin tools are a set of GUI administration tools that allow for easy administration of various services, systems, and applications that would otherwise be challenging for the average user. One of those tools that is exceptionally helpful to have is the VPN Server tool. Let’s install it and set up an VPN
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Running MDT 2010 Update 1 with Linux



If you ask Microsoft, it’s absolutely impossible to run MDT (Microsoft Deployment Toolkit) without an Windows Server. However, all you really need is a PXE-boot solution that provides support for booting ISO-files. Here’s a guide how you could do it running Debian on the server. Just remember the clients you deploy with MDT will still be Windows only. This is quite useful if you want to place a small Linux NAS close to the clients at a satellite office to save bandwidth without hosting a full scale server.
This guide assumes that you already have a Linux server running. This guide has been written using Debian GNU/Linux 6.0 ‘Squeeze’. We also assume your network has a DHCP server you have control over.
If you need help to setup Debian, please refer to other available guides on the internet.

Install and Configure Samba

We will use Samba as a file server for the MDT distribution share.
To install it run the command:
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HowTo: Speed Up Linux Software Raid Building And Re-syncing


It is no secret that I am a pretty big fan of excellent Linux Software RAID. Creating, assembling and rebuilding small array is fine. But, things started to get nasty when you try to rebuild or resync large size array. You may get frustrated when you see it is going to take 22 hours to rebuild the array. You can always increase RAID resync performance using the following technique.

Recently, I build a small NAS server running Linux for one my client with 5 x 2TB disks in RAID 6 configuration for all in one backup server for Mac OS X and Windows XP/Vista clients computers. Then whey I cat /proc/mdstat it reported that md0 is created and resync is in progress. The resync speed was around 4000K/sec and resync will complete in approximately in 22 hours. I wanted to finish this early.

/proc/sys/dev/raid/{speed_limit_max,speed_limit_min}

The /proc/sys/dev/raid/speed_limit_min is config file that reflects the current "goal" rebuild speed for times when non-rebuild activity is current on an array. The speed is in Kibibytes per second, and is a per-device rate, not a per-array rate . The default is 1000.



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List: Linux Compatible USB Wireless Adapter (WUSB)


I am in the process of up grading my computer. Where can I get a list of the WUSB for Linux?


Wireless USB adapters are pretty popular for desktop and laptop usage in home. It is capable of sending 480 Mbit/s at distances up to 3 meters and 110 Mbit/s at up to 10 meters. Newer N series can work at 270Mbit/s at up to 300 meters. However, 50-100 meters are acceptable ranges. Unfortunately, finding Linux compatible USB wireless adapter is a big challenge due to driver issues. Over a past few years, I've used and installed various USB wireless adapters and created my own small HCL for it. In this quick blog post I will list all working USB wireless adapter.

Buffalo WLI-UC-G300N

Buffalo's Wireless-N WLI-UC-G300 compact USB 2.0 adapter is fully compatible with Linux. Currently I'm using this device with Ubuntu Linux 10.4
and it works out of box. No driver installation is required. Simply add your wireless WPA2 password and you will be hooked up to wireless network
. The driver in latest version of Ubuntu kernel is broken and you need to install the driver from source code. (Driver Link for RT2870)



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LinuxCBT IPv6 Edition



LinuxCBT IPv6 Edition focuses exclusively on the burgeoning Internet Protocol Version 6 (IPv6).

The coursework explores IPv6 implementation on today's mainstream Network Operating Systems (NOSs), including: GNU/Linux, Solaris, Windows and Cisco IOS.

Given the imminent depletion of globally-unique 32-bit IPv4 addresses, and mandates set by the US Government with respect to IPv6-backbone-compliancy by Q2 2008 for government agencies, Information Technology (IT) Network/Systems Engineers/Administrators/Integrators/Directors/etc., are tasked with preparing their backbones and applicable infrastructure(VLANs/DMZs/etc.) to support Internet Protocol Version 6 (IPv6).

LinuxCBT IPv6 Edition will prepare you and/or organization to comfortable integrate IPv6 into your production environments, without negatively impacting IPv4 services.


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Ubuntu Linux Training



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VTC_Red_Hat_Certified_Engineer_RHCE

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TestOut :CompTIA Linux Training Suite



Product Features:

CourseSim
CourseSim is a comprehensive learning tool that is aligned with vendor-developed certification objectives. The CourseSim materials integrate multimedia technologies, applied simulation technologies, instructional animations, and technical graphic images into a sophisticated learning environment.

LabSim
LabSim is the world’s highest fdelity simulation product that aligns with the leading IT certifications. LabSim allows you to simulate hardware, operating systems and network configurations on your computer without the need of additional hardware or software. It is like having an interactive learning lab, without the expensive setup costs.

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