Tag Archives: security

Start an Internet Store

What is an Internet Business?

An Internet Business is a business that drives most of its transactions through Internet.
A company can use the Internet in many ways to conduct its business, it can use email to reach clients and potential clients, it can use its own website to either acquire leads for selling products or sell the products directly on the Website. This Internet Business model is called E-Commerce and its main way of conducting the business is through a Website.
The early days of the e-commerce were held back by security concerns. Nowadays the security fears have lessened as the technology improved and people are confident when buying online. In fact buying online has become, for some people, the main way of purchasing goods.
Nowadays, if you have a good business idea or a good product to sell, opening your online business is almost trivial. You need a domain name, a security certificate, and a hosting company.
Initially the all of the Internet Businesses were hosted on the .com TLD, hence the name given to Internet Businesses – dotcoms. This has now changed and commercial organizations own several domain names on different TLDs.

What is e-commerce?

E-commerce is an acronym for Electronic Commerce and consists of the selling products and services over electronic systems such as the Internet and other types of computer networks. E-commerce also includes the process of marketing, delivering, servicing and paying using the Internet.
An e-commerce company is named e-tailer. E-tailers can be "pure-players" which means that the majority of operations are done on the Internet or, they can be “brick and click” e-tailers, which means that they have a physical storefront but use Internet to market their products and sometimes to complement the store sells with online sells.

Why is e-commerce so popular?

Buying online is very convenient; you can browse a search through products a lot easier than you do in a regular shop. It saves time, because you don’t have to go to the store. And usually the products are cheaper than in a regular store because an Internet Business has less expense associated with physical storage, salaries and other costs associated with a traditional store. These savings are reflected in the final cost of the product.
In fact nowadays, e-commerce has become so popular that we almost depend on it, and our lives would be more complicated if it didn’t exist. Virtually everyone has a computer, hence is a possible e-commerce client.

How Can You Start an Internet Business?

What if you don’t have a product to sell? You would like to start an Internet Business but you don’t have a product. In most of the cases that is not a problem, there is a niche for anybody. Many Internet Businesses actually, do not sell merchandise on Internet. They sell, e-Books, services, digital music, (iTunes and mp3), pay per view shows and movies, Domain Names, Websites, knowledge, and the list can continue. There are websites that live off of advertising only, they write good content and sell add space on their website.
When you plan your business, focus on the things you know very well and you are an expert in. Find your great business idea do a market analysis and start immediately. It is a good idea to buy the domain as soon as possible and start creating content right-away, even if your business will start later. Search engines rank websites using secret algorithms, but we know that the age of a domain name and the associated keywords are important parts of this algorithm.

Focus on Business not on Tools

Many people start an Internet business and lose the focus on the most important thing – the business. They start spending a lot of time on side tasks and most of the times it’s because they have chosen the wrong partner for their enterprise. It is important to choose wisely your online partner so you don’t waste your time assembling pieces of the puzzle from different providers. You need to choose a reliable and reputable partner, an established company that can offer you the tools and the support your business need.

How do you pick a good hosting company?

A good hosting company will provide you with all of the tools to start and not only. They know the market and they find out what tools you need before you do, and make them available to you. Having all of the tools integrated into one account make your life easier. You need to focus on developing your business and not on managing and finding tools.

How to Build a Computer Network

If you own or manage two or more computers you need to connect your computers in a wired network to share Internet Connection and other services.
Here is a complete How To Build a Network.

Whether you are doing it at home or at your workplace, creating a computer network is not very difficult if you are a handy person and you have basic knowledge of computer networks. We will cover here most of the concepts you need to make your own LAN.
Computer Network
The series of articles will show you how to create a physical network and how to configure it to provide various services to your network users. We will focus on TCP/IP networks as this is the most common networking protocol.

Why Do You Need a Network?

You need a network if you need to share services for two or more computers.
Services that can be shared include: File sharing, sharing a network printer, Internet sharing, email services, Intranet, media broadcasting, etc…
In a home network, it is very common to share a printer and the Internet Connection.
In Business environment, the network becomes more complex and many more services will be needed to accommodate the use of many computers in a single network. Such services are DHCP – for automatic IP configuration, DNS – for name to IP resolution, corporate email, Proxy Server – for increased security on Internet, Intranet server – this is a private web server, VOIP phone system, etc…

What are the Limitations of My Network

You Ethernet cables are limited to 100m between any two active devices. If you need more than 100m between any two active devices such as computer and switch or computer to computer, you need to add a repeater or a hub, a switch will work as well, at each additional 100 meters, (or 333 ft.).
Depending on your materials and equipment, your network can run at 10Mb/s, 100Mb/s or 1Gigabit/s.
The most usual is to use Cat 5 or Cat 5e cables and connectors. A Cat 5 network can provide a speed up to 1000Mb/s.
If you need to connect at longer distances the more suitable solution are
Coaxial cable – up to 500M, speed 10Mb. You need special repeaters or hubs or special network cards.
The fiber optic – 10Km or more, speed up to 100Gb, depending on the equipment. It is the most expensive solution; the price though can be affordable for slower connections. For slower connections, most of the cost will consist on running the cable between the two points.
DSL is the cheap way to connect two remote offices if you have an available copper pair between the two offices.

What Do I Need to Make My own Network?

To make your own Ethernet Network you need the following equipment:
UTP/STP networking cable, RJ-45 connectors, Crimping tool, Punch down tool, Keystone Jacks, Wire stripper / Knife, Network Tester, Patch Panel, Network Switching device. The list includes also a stud finder, drywall saw, measuring tape, mounting plate, fish tape, ladder, and the usual tools such as screwdriver, drilling machine, hammer, etc…
Ample descriptions on the tools and materials are provided by following the links.

Computer Network Planning

The typical Ethernet Network has a star topology. That means that you have a central device, (network switch), that connects all of your network participants. This is important for your planning since you will have to run all of your cables to a central point. Make your measurements and place your central point in such manner that all of your cables are 100m or less. This includes the patch-cord as well.
If you have computers farther than 100m you will need to install a repeater. Alternatively you can use other types of connection, (coax, fiber optic, etc…), see the limitation paragraph.
When you run a cable consider the maximum amount of devices that can be stuffed into that office. It is a lot cheaper to run an extra cable or two per each office location than to run a single cable after the initial installation.
Install the keystones as close as possible to the actual location of the computer. Plan this thoroughly and pick the best location so that the patch-cord is out of the way.
Buy extra cable and extra connectors.
Use common paths for your cables whenever possible. If you run ten cables at once saves a lot of work and time.
Plan your cable route. Use ceiling whenever possible, it is the easiest path. Avoid running the cables near big electromagnetic sources.

Buying Computer Network Tools and Supplies

Do not buy cheap tools and materials. If you do, you will be penalized in different ways:
At the installation time you will get all sorts of problems trying to connect poor materials, cheap cable will be damaged more easily when manipulated, connectors will break easier.
In time the quality of the network will decrease if poor supplies and tools are used.
Overall experience and quality will be very poor if you get too cheap. If buying expensive tools is not justified, (a one time job), try to borrow good tools and don’t buy cheap ones.
Follow the links to learn what to look for when you are buying specific materials.
Now that you planned and bought all the Networking tools and supplies you can proceed to the Running the Cables for a Computer Network.

How to Test Your SPAM Filter

Does my Email Filtering Solution Work?

Sometimes as email administrators we need to test if the SPAM filter works and is filtering messages. In order to do this we need to send a test message with content that we are sure is rated as SPAM.

GTUBE – Generic Test for Unsolicited Bulk Email

The GTUBE the “Generic Test for Unsolicited Bulk Email” is a test that can verify if your antispam filter is installed correctly and is detecting incoming spam.
GTUBE works in a similar fashion to the EICAR anti-virus test file.
Insert the following string in any email message and your antispam filter should detect it and filter it accordingly.
XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X
Note that this string should be written in one line, without whitespace or line breaks.
Note that this string and can be reproduced freely, without attribution; they are hereby placed in the public domain.