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Debian wheezy is a Debian distribution and development codename that was released after Squeeze to develop and update a lot of packages in order to make use of security build flags through dpkg-buildflags. Its function is to allow several protections over security concerns like predictable locations of memory values, stack smashing and more. Wheezy is the current aliases for testing distribution which packages that is testing is unstable and not completely fit and not ready for release yet. Wheezy distribution also contains modern packages and it is being updated constantly until it enters the frozen state and ready to be released.

This Debian distribution’s security updates are being provided by Debian testing security team. It is an automatically generated type of Debian distribution that is produced from uneven distribution by some sets of scripts that try to move packages that are on the verge of lacking critical bugs release. In order for a specific version of a package to move into testing or Wheezy distribution it should be in unstable stage for either 2, 5 or 10 days hinging on the upload’s urgency; it should be brand new and compiled on every architecture; it should not have release critical bugs that does not apply to the version that is currently in testing; its dependencies should be satisfiable by either by group of packages that are going to be installed or packages that are already in testing and lastly it is important that the operation for installing the package to testing does not break or damage any packages that is currently in testing.

This is a visual walk-through of an installation of Debian Wheezy. In this post I will show you how to install Debian Wheezy and I will use screenshots.

1. First download a Debian Wheezy installer from here:

http://cdimage.debian.org/cdimage/wheezy_di_rc1/i386/iso-cd/debian-wheezy-DI-rc1-i386-netinst.iso

Then burn that image to a CD and boot from it.
wheezy1

2. Choose the language to be used for the installation process.

w2

3. Select your location:

This will be used to set your time zone. You should choose the country where you have the server.

w3

4. Select your keymap: Continue Reading…

LPIC1 – Assessment Test

Valic —  March 27, 2013 — 3 Comments

The assessment test is produced from the introduction of your companion text.
This test is created for you, to test your knowledges, take this test before start studying for LPIC exams.

 

Take Assessment Test:

It is possible to configure logon or welcome banner in the SSH server with the use of the Banner directive in /etc/ssh/sshd_config file.The Banner directive is only available for SSH protocol version 2 and by default there are no banner configured.

1. Create a banner file.

First you need to create the file that will include your banner for your users. In Debian, the default banner is located in /etc/issue.net file

nano /etc/issue.net

You can put here anything you want or just a welcome message like this:

###############################################################

Welcome to my server!
Disconnect IMMEDIATELY if you are not an authorized user!

###############################################################

2. Configure the /etc/ssh/sshd_config file

Now, add or remove the # from the beginning of the line Banner /etc/issue.net from /etc/ssh/sshd_config file.

nano  /etc/ssh/sshd_config
Banner /etc/issue.net

Restart sshd daemon for the changes to take effect Continue Reading…

openssh

On Fri, 22 Mar 2013 OpenSSH 6.2 was released and like always, bring more improvements including support for multiple required authentication in SSH
protocol 2 via an AuthenticationMethods option:

sshd(8): Added support for multiple required authentication in SSH
   protocol 2 via an AuthenticationMethods option. This option lists
   one or more comma-separated lists of authentication method names.
   Successful completion of all the methods in any list is required for
   authentication to complete. This allows, for example, requiring a
   user having to authenticate via public key or GSSAPI before they
   are offered password authentication.

You can read more about this release here: https://lwn.net/Articles/543961/

I this guide I will show to how to connect to a Cisco equipment using minicom.

1. Install minicom If not installed:

apt-get install minicom

2. Setup minicom.

To enter in minicom setup screen use:

# minicom -s

minicom_setup

Now select “Serial port setup”  from the menu:

First thing you need to do is to select the serial port.
Select A and set it to ttyS0 on some other distribution will be ttyUSB0.

Then you need to select E to configure the port connection.
A new window called comm parameters will show up and  in this new window, press C to set the speed to 9600bps, and V to use 8 data bits, and then press Enter o go back to the previous window. Continue Reading…

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