Category Archive: technology

Aug 23

LDAP Installation and Configuration for User Authentication

Installation of LDAP Server LDAP (Lightweight Directory Access Protocol) allows central user, group, domain….. authentication, information storage … Using LDAP in a local network, you can allow your users to login and authenticate from anywhere on your network. This tutorial will be split in 2 parts. In the first part, I will explain how-to install, …

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May 04

Setting up SSL — Apache 2

This document requires that you’ve got a signed server.crt and a server.key file available. You may have just gone through my page Creating Certificate Authorities and self-signed SSL certificates. If not, go there first and follow the instructions. The remaining steps involve Apache and other tweaks detailed step-by-step below. This file was originally written for …

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Nov 28

Postfix Mail Setting : Tutorial Step by Step

(Note: I have written this tutorial for FreeBSD server) First Install Apache in your server. Apache22 cd /usr/ports/www/apache22 make install echo ‘apache22_enable=”YES”‘ >> /etc/rc.conf Install Postfix on FreeBSD Installing Postfix mail server on FreeBSD server from ports is easy. Just type two commands, you will be ready to go # cd /usr/ports/mail/postfix-current # make install …

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Nov 09

Secure Remote login through ssh

OpenSSH OpenSSH is a FREE version of the SSH connectivity tools that technical users of the Internet rely on. Users of telnet, rlogin, and ftp may not realize that their password is transmitted across the Internet unencrypted, but it is. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks. …

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Nov 08

The following signatures couldn’t be verified because the public key is not available

Re: gpg error ppa.launchpad.net intrepid Release What you need to do, is the following: Open gnome-terminal and enter the following: gpg –keyserver subkeys.pgp.net –recv C71839136CF5CE97 (replace “C71839136CF5CE97” by the code in your error message) Then enter the following: gpg –export –armor C71839136CF5CE97 | sudo apt-key add – (here again, replace “C71839136CF5CE97” by the code in …

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Nov 08

Teamviewer for Linux as a service

(RECOMMENDED FOR DEBIAN & UBUNTU) General Question: I have installed the new Teamviewer Beta for Linux onto my computer which is running Debian 6.0.1. It is working awesome! However right now, if I need for any reason to restart my home computer (debian) I can not logon to my computer again as Teamviewer is down. …

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Nov 04

Domain Name System (DNS) Setting Step by Step

(Note: Here I am Describing DNS Setting in FreeBSD. I hope this tutorial is helpful for Linux and other BSD distribution. ) FreeBSD utilizes, by default, a version of BIND (Berkeley Internet Name Domain), which is the most common implementation of the DNS protocol. DNS is the protocol through which names are mapped to IP …

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Jul 08

How To Install Windows 7 From USB Drive

Use a USB Key to Install Windows 7—Even on a Netbook Keeping the Windows 7 installation on a USB thumb drive has a few advantages—a small USB key is much more convenient for carrying around than a DVD, the OS will actually install much faster, and you can use a USB key to install Windows …

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Jun 10

Recover from Unmounted VI : rc.conf Mistakenly Typed

Reboot your System. reboot Choose Single User mode from list. (Press F4) Enter full path name of shell or RETURN for /bin/sh: now your single usermode is enable. Now the problem is even entered /bin/sh, still do not have any function can change this configuration file, even “vi” is not available After entering the single …

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May 27

Mount Removable Drive in Unix

A computer running Linux may only make a few drives (e.g., partitions on a hard disk or on a flash drive) available, among all drives recognized by the system. Unlike Windows, Linux does not keep independent folder hierarchies on separate drives designated by different letters. Linux integrates the files stored on separate drives into the …

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