When choosing a VPS plan you must decide if more CPU cores or more RAM (memory) is more important to you. Both CPU and RAM are important in being able to run smoothly and quickly. You can find equally priced VPS plans from different providers that are largely the same, but one will have multiple CPU Cores…
The other day I got a new RamNode VPS. The ordering is painless and simple, however I made a mistake and installed Debian 7 when I meant to install Debian 8 Minimal. Whoops. It actually took me a few minutes to figure out how to reinstall the operating system for my VPS. The place to do a…
The ‘line vty 0 15’ command in Cisco networking is used to configure and manage virtual terminal lines (VTY lines) on Cisco devices. VTY lines are software-based interfaces that allow administrators to establish a terminal session over a network connection to configure and manage the device remotely. How to Use the ‘line vty 0 15’…
This is an interactive map of the world’s data centers. These are places where you often can purchase colocation, high speed Internet, and other services. When the world talks about the cloud, or remote servers, these are the actual physical locations where much of this computer power is stored. Most of these data centers contain rows of…
The CCNA (Cisco Certified Network Associate) Routing & Switching certification is one of the most sought after networking certifications. It is often the best way to get your food in the door of a great networking and IT career. The CCNA is a big step above certifications such as CompTIA’s Network+ or Security+. You will…
Command: clear ip route Function: Removes all entries from the IP routing table. Syntax: clear ip route [<address> | <network> | <wildcard> | <all>] Parameters: <address>: Specifies the IP address of the route that you want to remove. <network>: Specifies the network address of the route that you want to remove. <wildcard>: Specifies the wildcard mask of…
Iperf is a tool used to measure bandwidth limits. There’s a number of public iperf servers you can test to, but some require version 3 of the iperf program. This can be a bit tricky as Ubuntu seems to have version 2 of iperf in their default repository list. Here are two ways to install iperf version…
A Japanese virtual private server (VPS) is a great idea if you need a server that is largely going to be accessed by Asian users. Japan is a stable, well developed country with fast Internet speeds. Unlike China and certain other Asian countries, Japan allows free compute usage, so government permits and censorship should not…
The Open Systems Interconnection (OSI) layer model is a way of describing communications by computer systems over networks. The goal is to set a standard for how communicating over a network should look. The OSI model is not protocol specific, but instead different protocols belong in different layers. The layering of communication protocols allows for…
Changing the file extension for multiple files in a Linux directory is easy. If you need to add something to the end of every filename in a directory or if you want to remove text from the end of a filename in a directory you can use a simple bash loop. A bash loop will…