FFmpeg is a open source project that produces libraries and programs for handling multimedia data and publishes them online. The most popular components of FFmpeg are libavcodec, an audio/video codec library used by several other projects, libavformat, an audio/video container mux and demux library, and the ffmpeg command line program for transcoding multimedia files.

FFMPEG can be installed manually using detailed steps given on the eUKHost forum thread but if you don’t want to do manual work and need to get it installed automatically then this thread is for you. If you go through above given thread you will find an autoinstaller script which will also install FFMPEG but it will install the older version of FFMPEG. Now you can install Latest FMMPEG SVN-r24734 version using steps given below.

Download FMMPEG SVN-r24734 auto-installer Script
Login to the server and download file using wget.

Extract the downloaded file

Go to Extracted folder

Run Autoinstaller

Now follow the steps and press enter…now its time to have a cup of coffee.

In this tutorial I am going to explain how to install and setup Windows Server 2008 Domain Controller and DNS server which can be used as centralized server to keep user information, OU, setting up group policies etc.

1) Go to Start >> Run and type “dcpromo” and press enter.
Server will now start checking if Active Directory Domain Services (AD DS) binaries are installed or not; if not, then it will install it. After running “dcpromo” you will get popup like below which will scan the server

2) Once the AD DS binaries are installed, you will get “Active Directory Domain Services Installation Wizard” like below

Here you will find a option “Use Advance Mode installation” which will show you more options (basically for advance user). You can keep the checkbox unchecked and press Next

3) Next Windows will show some basic information about Microsoft Windows 2008 Active Directory Services. Press Next to continue

4) Choose Deployment Configuration: This windows will allow to add the server to an existing Forest Or to Create a new Domain forest.

Select Create a new domain in a new forest and press Next.

5) Name the Forest Root Domain: Enter the name of the domain (Fully Qualified domain name) which will act as root domain for the AD DS and press Next..

It will take some time to check if the domain is already in use or not.

6) Set Forect Function Level: We would suggest you to read the description of every OS before selecting the option

7) Set Domain Function Level: We would suggest you to read the description of every OS before selecting the option

8) Additional Domain Controller Option: On this window you can select DNS service here. Also as this server is First domain controller in a forest it must have Global Catalog due to which it doesn’t allow you to enable or disable this feature. I want to set this Domain Controller Server as a DNS Server as well, so I have kept the check box beside DNS server selected. Press Next to continue.

Please allow sometime to for DNS configurations and if any DNS warning Pop-Up’s Press Yes to continue

9) Location for Database, Log Files and SYSVOL: In this window you can set the Path for database, log and SYSVOL files. If you don’t want to change it keep them default and Press Next.

10) Directory Services Restore Mode Administrator Password: Enter the Password (& confirm it) which you will use login into Domain Controller.

11) Summary: It will Show you the Summary of all configuration which you have selected. Here you can export the current configuratino whch can be used for any other setup.

12) Installation wizard will install/configure everything on your Server now

13) Reboot: Once the above process gets completed press Finish and reboot the Server.

By default First name of the domain is NETBIOS name. E.g. here I have used domain adtesting.com so that NETBIOS name will be ADTESTING. So, after reboot I have to login into the server I will use “ADTESTING\Administrator” as user and the password which I have used on Step 10.

Proxy server is a computer system or application which is installed on computer system that works as a  acts as an agent or channel for requests from clients looking for resources from other servers. You can check see this post for more information about installation and configuration of Squid Proxy.

Now after installation when you try to check your IP in any site like whatismyip.com it will show that you are using proxy along with the hostname and version of Squid proxy server which is a security concern.

1) Hide Proxy version & server hostname

a) Hide Squid Version

open “/etc/squid/squid.conf” in a editor like vim and search for “httpd_suppress_version_string” and enable it.

Change FROM:

TO:

b) Hide Hostname

Search for “visible_hostname” and change FROM:

TO:

<your desired hostname> will be the name you want to show to world

2) Configure Multiple IP for Squid

Sometime it happens that the Proxy server which you have setup have multiple IP address and you want to configure squid server to use multiple IP addresses (i.e. Systems will show the secondary IP of the server instead of primary). Open squid configuration file; search for “tcp_outgoing_address” and add following

Replace <IP Address> with the IP assigned to your Proxy Server.

Restart Squid Server with command “service squid restart“

_

Sometime while root any device using Android Debug Bridge (adb) it shows following errors

Error 1:

Error 2:

Solution (Error 1)

After going to ADB shell of the device when you execute “/data/local/GingerBreak” shows following error:

To fix this problem you need to give 755 permission to GingerBreak file. So, execute following command

This will assign proper permissions to the file.

Solution (Error 2)

After you fixing Error 1 while running GingerBreak you might face following error:

To fix this issue you have to delete two files i.e. /data/local/tmp/boomsh and /data/local/tmp/sh. Following are the commands to remove the files

Done :)

Last week I have installed “Macbuntu” on my Ubuntu 10.04 system which looks fabulous but it was putting extra burden on Resource of my system. So, I un-installed it and after reboot it was just like fresh installed system i.e. all my customized settings, desktop, wallpapers were switched back to default settings.

After 20-30 minutes I was able to customized the system as per my requirements but still there were two things which we not acting as per my previous settings which were

1) Terminal was not showing Desktop wallpaper as background (instead if I make it transparent it just transparent the screen which shows applications behind it). Just like below image

2) ALT+TAB which is used to switch between the applications was really very show and it was showing a preview of every application (which is consuming more resources and making it slow).

I have searched on forums and found that Gnome’s “Compositing manager (compiz)” is enabled on the system. Compositing manager is a component which is used to enhance the GUI (Graphical User Interface). You can disable it through command line or through Gnome Editor.

For Command Line execute following command on terminal of your system.

For Graphical User

Press Alt-F2 to open the Run Application dialog (like below image). Type gconf-editor and press enter.

Navigate to apps >> metacity >> general and uncheck the compositing_manager option.

Thats it and everything seems working properly again. I can see the desktop image on terminal as well as ALT+TAB is giving fast results.

Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. Plesk 9.x supports Atmail and while sending emails using Atmail every email shows following message in the footer of the email sent.

Msg sent via @Mail - http://atmail.com/

This message is quite irritating and look un-proffestional. This message can be removed by editing AtMail Configuration file which can be located at following location

Plesk Windows: C:\Inetpub\vhosts\webmail\atmail\libs\Atmail\config.php for Win
Plesk Linux: /var/www/atmail/libs/Atmail/Config.php
Normal Location: [Atmail installtion location]/libs/Atmail/Config.php

Search for ‘footer_msg’ option and change the message you want to set OR keep it blank

FROM:
'footer_msg' => 'Msg sent via @Mail - http://atmail.com/',

TO:
'footer_msg' => 'YOUR COMPANY NAME OR ANY TEXT',
OR
'footer_msg' => '',

Restart the webserver.

While stopping any VPS it gets timeout and VPS gets locked. After that it’s impossible to stop the VPS even if the method here gets failed OR even after rebooting the Host server problem doesn’t get fixed. Following are the steps to fix this issue

1) The very first step is to find out which process still running inside the VPS. To find the VPS process login to the host server from RDP and open Task Manager (Right Click on task bar >> Task Manger).

2) Sort the processes using CTID which will list all the processes on the basis of VPS ID or Container ID

If you find any processes named “winlogon” and “csrss” under problematic VPS then it’s not possible to kill these processes as they are critical windows services.

3) Disable “vzsrv” service from Service manager Or by executing following command from command prompt

4) Reboot the Host server.

5) As we have disabled vzsrv service non of the VPS will start but you will able to edit the VPS configuration file. Open VPS configuration file from [Path to VZ directory]:\vz\Conf\CTID.conf and add following string into the beginning of the file to disable on boot feature of the VPS.

6) Enable the vzsrv and reboot the host server again.

This will restart all the VPS except the problematic VPS. We would suggest you to scan the VPS using CureIT (after mounting it) as there is a possibility the the VPS is infected with Viruses.

“QaasWall” is an open-source Firewall for windows which uses IP security policy (IPSec) to block IP address automatically that means users does not need to make any efforts other than running the setup on the server. The word “Qaas” in Arabic means Tough which spells it as ToughWall. After installation all your previous rules (IPSec or Firewall rules) would get disabled and it works in layers which are mentioned below:

1. It will scan all the standard ports DNS, MSSQL, MySQL, SMTP, POP3, HTTP, SSL and Sharing on the server and save its out put in a file, which is saved in the /temp directory, with the info on how many connections does each IP address have on them.

2. Any IP that has more than 100 connection at the time of scan will be blocked using Windows IP security Policy, named “Qaas Policy”. Any IP address that has been already blocked, added in white list file or belong to the server will be ignored.

3. Currently QaasWall creates 2 schedule tasks, QassWall and Qaas Empty, one of it is to scan services every 5 mins and other to delist IP addresses after 24 hours.

4. The IP will remain blocked for 24 hours (max) and Qaas will release the IP address then.. These setting can be changed by rescheduling the Task.

QaasWall also has a white list file where you can add IP that you want to be safe. Any IP that belong to the server or is already blocked or is added in the white list, will be ignored.

This firewall is developed by Eukhost Windows System Administrator Martin to overcome the limitations of Windows Default firewall. He said, “I have been working on how to block IP Addresses on Windows server for 2 years due to the fact that Windows 2003 Server did not have any option in the default firewall to block a single IP address and these is the reason I was curious to create something that would allow us to block a single IP address on the server. Then we found IP security policy which looked a bit complicated and difficult to configure however we managed to master it in no time. We have always faced numerous attack on our Windows server specially a brute force attack on the MSSQL master login “sa” and it use to be a pain in back side to block single IP address every time. This was the only reason (or you can call it a desperate need) why QaasWall was brought to life.”

QaasWall Firewall can be downloaded from source forge.

Problem:
If you are using MySQL Server version 4.x.x on your server but when you try to access PHPMyAdmin from Cpanel you will get following Error:

Due to your application configuration or any other reason you want to access PHPMyAdmin without upgrading MySQL version to 5.x.

Solution:
To fix this issue you should have root level access to your Server (if you are on shared server please contact your hosting company).

1) Login to server (SSH) using root login credentials.
2) Remove “_usr_bin_mysql_config_–version” file using following command

3) Now update your PHPMyAdmin (forcefully) with following command

Now try to access PHPMyAdmin

1) VIPCA Configuration
Error 1: error while loading shared libraries -libpthread.so.0
While installing Oracle 10gR2 RAC (Cluster) on Redhat Enterprise Linux 5 or CentOS 5 you will get following error when you execute root.sh (After Cluster Installation) on last node. This Error is thrown when root.sh execute VIPCA which Virtual IP configuration Tool.

To fix this issue edit /u01/app/oracle/product/10.2.0/clust/bin/vipca and add following (Green colored or on line number 124):

Error 2: Error 0(Native: listNetInterfaces:[3])
Once above changes made and when you run /u01/app/oracle/product/10.2.0/clust/bin/vipca you will get following Error

Now you will have to configure Virtual IP’s Manually. You can configure it using following commands

Now Run VIPCA

2) Srvctl Error:
While checking status of RAC using command srvctl you will again get the following error:

To fix this bug edit following files

and add following (Green colored):

Now Execute srvctl commands to check the current configuration and status of the RAC database