As Wikipedia tells us the proper DNS or Domain Name System servers are nothing more than working on resolving the host IP addresses and exactly the opposite. This is what allows you to navigate smoothly and reach the Web sites we want. Not just in house, Google has decided to set up DNS servers.

These are easy to remember it. Let's see why.

• Primary DNS: 8.8.8.8
• Secondary DNS: 8.8.4.4

As regards the application of DNS servers, there are more roads to be taken quite defined. One is to directly set in the configuration screen of your router. Other hand, is set in the configuration file of your GNU / Linux. For my current Archlinux, you must edit the resolv.conf file that is located within /etc.

For others, such as Debian or Ubuntu, it is very simple to include the DNS servers in the network configuration.

We now have access to DNS set as mentioned above, or a domain name system and a primary alternative. If, however, tested them and browsing there seems brighter as before, you can always use OpenDNS.
( 208.67.222.222 - 208.67.220.220 ).

In today's tutorial how to configure openssh, for the specific installation, service configuration and subsequent implementation of a chat through the terminal.

The software for the occurrence are openssh and irssi. As a first step, it is necessary, perhaps through your distribution's repository to install them. In my case, using Archlinux, I will give the command pacman -S openssh or yaourt -S openssh.

This done, and if you did not run smoothly, we pass to the configuration. The files are mostly two, and are both located in /etc/ssh/. First with our text editor, edit sshd_config. We will find several options, those that concern us are listed below:

• Port 22

• Protocol 2

• SyslogFacility AUTH

• LogLevel INFO

• PasswordAuthentication yes

• X11Forwarding yes

• X11UseLocalhost yes

• Subsystem sftp /usr/lib/openssh/sftp-server

N.B.: to enable the party indicated above, it is necessary, if it is present, remove the pound sign (#) to enable everything.

Save is now edit the file ssh_config this also in /etc/ssh/:

• ForwardX11 yes

• Port 22

• Protocol 2,1

• SendEnv LANG LC_*

• HashKnownHosts yes

• GSSAPIAuthentication yes

• GSSAPIDelegateCredentials no

N.B.: Same as before, then changed everything according to what mentioned above, alert to the pound (#) to enable the options for the proper functioning of the program.

Now we just have to restart the daemon, in my case /etc/rc.d/sshd restart. Who should use distributions such as Debian, Ubuntu, the command to activate, stopping the service will restart and /etc/init.d/sshd start | stop | restart.

The base string to connect is: ssh username@IP otherwise ssh indirizzo IP -l username or even ssh IP

To view the logs we cat /var/log/auth.log | grep ssh but if they do use a fairly steady is better to use a text editor rather than the cat that will simply display the requested file.

Now with a little foresight, we must be configured to wait the address of the LAN IP to enable the listening port and then connect remotely to our car. It 'an important thing to do, because without it, we will not be able to fully exploit the potential of the program and our needs.

Just give a ifconfig, you'll see something like the figure below:

In my case the issue is the wireless interface wlan0 with IP address 192.168.1.100. If you use the network cable to test the value corresponding to the field indicated on eth0. Now we just have to get inside the router configuration and section virtual server IP address set as that seen shortly before (192.168.1.100) as the TCP protocol and port as the number 22. Save the settings and log out.

Now we spend maybe the most interesting, or remotely connect to our car. As mentioned a few lines above, there are two strings to connect remotely via ssh to our car. There propose a third, but it is not a string, but a Windows software that allows us the same thing. Also because, as often as often happens, one is to use more and more computer systems during the course of a day. The program in question is called Putty.

N.B.: Remember that the section Host Name should be inserted the public IP address and not the LAN. To find a reference site can be www.mioip.it manual or if you can see it in the settings of the router.

If all goes well we will be in front of a terminal that will ask your username and password (our login credentials so to speak). Now to chat, write irssi. Et voilà:

In the image above irssi running connected to an IRC server.

This is a simple guide on how not to lose much time in the ssh configuration, see the command man ssh for a configuration to suit your needs.

An important imprint that a website or blog you can leave respects is represented by the RSS feed. But in essence what is a RSS Feed? The RSS feed or RSS Feeds are born primarily to create a flow in information of any kind to stay up to date on a particular topic, usually using XML dynamically.

Presented in the tutorial we will see how to configure an RSS feed via email management software Thunderbird. Is valid for any GNU / Linux is currently available on-line application provided you have mentioned above and an RSS feed of a site at will.

So, without this premise, we open Thunderbird. Section Edit - Account Settings - Add Account - select RSS News & Blog, set a name and go forward. Only after we press Finish.

Now we just have to manage the RSS feed by entering the following link that will allow us to download the news we need.

Then, following the initial procedure log back in to Edit - Account Settings and go to look for HomeLinux which is exactly the name that we are giving primary and the RSS that allows us to distinguish it from any other email account that we have. This of course is our discretion and choice.

Paragraph numbers below, before accessing the Manage Subscriptions must flagge options listed in step 2. Now, as the last item go to Manage Subscriptions ...

From point by pressing Add, and now we are in front of the properties of the feed. It 'the most important because it allows us to insert the link that will allow us to see the news you want. In case you want to add the RSS feed of HomeLinux you must enter the address http://homelinux.us/en?format=feed&type=atom

Tap OK, close the screen, RSS subscriptions and press OK again. Now we just have to click on the RSS Feed (ubuntu) previously created and we will notice the articles / news as a real email.

According to the settings that we have said before, every day when we will start our mail software, or otherwise kept it ever open it, the messages will be searched when the application is the same, or every 10 minutes. E 'tutto.

RSS Feeds HL you can check via the link shown above or through the appropriate icon on Sixtus himself. And 'can display the appropriate XML file for a more correct.

Thank you for your attention