Google Wi-Fi Review

Google Wifi Review

Unlike the traditional method of having one router that supports Wifi for your entire home, Google Wi-Fi uses a mesh Wi-Fi system. The mesh network creates coverage that extends far … Read more

Understanding Big O Notation

Looking from the outside, Big O is very scary. Why? O is not an abbreviation for a word, it’s a concept. It’s a concept used in mathematics. It’s a concept … Read more

Send a Test Mail Using Telnet

Send a Test Mail Using Telnet

When you are having a problem sending a mail message, the first thing you want to do is test the SMTP (Simple Mail Transfer Protocol) connectivity. By default, SMTP listens on port 25. By using telnet, you can connect to port 25 on the mail server and test whether or not you can send a message. This step is done on your own workstation. If you are having a problem sending mail from a web form, run this step from the server that is storing the web form.

OSI Model Layer

The Open Systems Interconnection model (OSI model) by developed by the International Organization for Standardization (ISO) in 1984. OSI reference model is a way of sub-diving network communication and grouping them into logical layers. On each layer, an instance provides the services the instances to the layer above it and requests services to the layer below it.

Disable SSLv2 and Weak Ciphers

Disable SSLv2 and Weak Ciphers

Are you still using Secure Socket Layer (SSL) version 2 on your web server? If so, you need to read this article. It can save your life. Okay, maybe not that dramatic but it will show you how to disable SSLv2. Why? There are vulnerabilities in this version. If you don’t disable it, your web server might get compromised. This vulnerability exists whether you are running Apache or IIS. The steps to disable it are fairly trivial. So go ahead and tr

Where is the Windows Vista Send To Menu?

Where in the world is the Send To menu? Yes, you have guessed it. It has moved again. To get it back, the process is different but once you get it, you can use the same process as before. Do the right-click for the Send To

Useful Regular Expressions

From the words of Peter Parker “With great power comes great responsibility” so too is the power of regular expression. It is concise, flexible and powerful. At the same time, it can do complex matching of text such as characters, words and patterns of characters.