Border Gateway Protocol (BGP) is the protocol that makes up the Internet. It is used by networks to connect to one another. BGP allows networks to announce IP blocks to one another. These announcements paint a picture of how to reach every IP address on the Internet. This picture is stored in a routing table….
VIM is a very powerful text editor. It or it’s predecessor, VI come installed on every nix based computer. If you ever need to edit a file in a nix operating system, you can type ‘vi filename’ and be able to use VI or VIM. Beyond always being available, VIM is extremely powerful. VIM users hail it…
The Internet is made up of a bunch of smaller networks. All these small networks connect to one another is some manner. Some of them buy IP transit from other networks, some of then peer with one another for free. Whatever the case may be, everyone on the Internet should be able to reach everyone…
Setting up fastcgi caching on your nginx webserver is a great idea. Especially if you are running a WordPress site or a site that otherwise uses a lot of server power to process each page. I won’t go into how to configure fastcgi in this article. However, once things are setup, the best way to…
Google’s Adsense came out with a responsive ad fairly recently. It’s a neat idea where ads respond to the space they are given. This allows Adsense to create responsive ads that fit onto the device screen of the user. It also allows website owners to hide ads at times. The problem is, the responsive ads…
BGP is the protocol used to talk between networks. It is the protocol of the Internet. To connect your network to other networks you will likely use BGP or have your uplink provide you with a gateway IP address. BGP is not needed to connect to the Internet or to other networks, but it is…
Vim with plugins is a popular IDE option. The reason most people stay away from Vim is the steep learning curve. Most of Vim’s power comes from all the key bindings you have to learn. Just saving and exiting a file can be a daunting task for someone who have never used the text editor…
The first server listing in the nginx configuration will be the default action for all domain name requests to that server. This will be true unless a server action is labeled default_server. This means that the server might render a website for any domain name that is requested from nginx. To prevent this behavior you must…
BGP uses different metrics to select which path to send data. This is how BGP chooses paths. Attribute Description/Notes Winning Metric Weight local to the router Highest LOCAL_PREF Within the ASN, 100 by default Highest Locally Originated Local paths that are sourced by the network or redistribute commands are preferred over local aggregates that are…
Also see this vim maze game. This vim/vi game covers basic movement commands. I highly recommend starting with some basic commands and then just using vim to edit files. As you progress and learn the basics you can begin to add more advances vim commands. Learning vim is a process that should be taken in steps….