Command: clear counters Function: The ‘clear counters’ command is primarily used to erase the previously collected monitoring data from various interfaces and sub-interfaces on Cisco networking devices like routers and switches. Additionally, it assists in troubleshooting network performance issues and monitoring data utilization. Usage: To clear counters on a specific interface, use the following syntax: clear counters…
Thousands of websites get hacked everyday. There are a lot of reasons websites get hacked. Sometimes the hacker is trying to get credit card information. Other times they want to use your web server to send out spam or DDOS attacks. Sometimes hackers compromise websites simply because they can. Whatever the motivation, having your website…
Cogent Communications is a tier 1 network providing a variety of services. Cogent provides Internet connections and colocation to over 50,000 customers. Their network spans over 40 countries and their network is all fiber optic (no copper). Cogent was founded in 1999 and is based in the United States. They made a name for themselves by offering low price…
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…