June 5, 2010

SSL certificate installation using Openssl

Filed under: Technical Articles — admin @ 1:17 am

In order to get a valid SSL certificate, you will need to generate a CSR that a certificate signing authority (such as Verisign or Thawte) will request. You have to determine the URL for the secured web site – this should be a Fully Qualified Domain Name (FQDN), i.e. if you want to access your secured website through https://www.example.com/, then the FQDN of your website is www.example.com
Select a few large and relatively random files on your server – compressed log files are a good start. These will act as your random seed enhancers. We refer to these as file1:file2:…:file5 below. Generate a key with the following command:

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June 4, 2010

Installation of PHPBB with Debian OS on VPS node

Filed under: Technical Articles — admin @ 2:31 am

To set up a VPS from the default minimal Debian Etch template (you can find it in  /vz/template/cache/), run:

[root@melbourne ~]# vzctl create 157 –ostemplate debian-5.0-i386-minimal –config vps.basic

The 157 must be a uniqe ID – each virtual machine must have its own unique ID.

To start vm  at boot, run

[root@melbourne ~]# vzctl set 157 –onboot yes –save

To set a hostname and IP address for the vm, run:

[root@melbourne ~]# vzctl set 157 –hostname debian.server.com –save

[root@melbourne ~]# vzctl set 157 –ipadd 192.168.0.157 –save

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May 31, 2010

Why do we get a “SSL Error – Certificate Not Trusted” ?

Filed under: Technical Articles — admin @ 1:00 am

Have you ever wondered while you  access a website through a secure connection , you happen to get a  warning  message that the certificate is not issued by a trusted authority.

In most cases , the  exact warning message  that you will get depends on your browser as follows:

I E –  The security certificate presented by this website was not issued by a trusted certificate authority.!

Firefox – The certificate is not trusted because the issuer certificate is unknown. (Error code: sec_error_unknown_issuer)

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August 24, 2009

Perl Modules ..

Filed under: Technical Articles — admin @ 12:35 am

PERL MODULES

What is Perl?

Perl is a high-level programming language with an eclectic heritage written by Larry Wall and a cast of thousands. It derives from the ubiquitous C programming language and to a lesser extent from sed, awk, the Unix shell, and at least a dozen other tools and languages. Perl’s process, file, and text manipulation facilities make it particularly well-suited for tasks involving quick prototyping, system utilities, software tools, system management tasks, database access, graphical programming, networking, and world wide web programming. These strengths make it especially popular with system administrators and CGI script authors, but mathematicians, geneticists, journalists, and even managers also use Perl.

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August 19, 2009

Mod_Perl.. Configuring and troubleshooting..

Filed under: Technical Articles — admin @ 12:21 am

Mod_Perl

1. What is mod_perl ?

2. Working of mod_perl.

3. Advantage & Disadvantages of mod_perl.

4. Downloading and Installation.

5. Configuration.

6. Some common errors.

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