TechRejects - Helpful Tech Tips

What is a Firewall? A firewall is a barrier on a computer network or on the computer itself that prevents unauthorized access to a computer - while allowing only authorized access - by other computers on the network. An example of such a network is the internet and firewalls are important to prevent the activities of hackers and malicious software or websites who may want to infiltrate your computer. Firewalls may be hardware or software. Hardware firewalls are appliances that are connected to a network and do the jobs of the firewall while software firewalls are programs that can be installed on the computer itself. This article is concerned with software firewalls and where you can download them for free. The following are some of the best firewalls available as free download for PCs and  Linux  computers. Where to Download Free Firewalls for Windows PCs (XP, Vista and Windows 7) ZoneAlarm:  Works to prevent infiltration of your network by making your pc invisible on the in

Message Encryption  is the process of encoding sent messages and documents (such as emails) so that only the intended recipient can decode and read it. This can be done with the use of encryption protocols like PGP and S/MIME. They allow for a user to generate public and private keys which are used for encryption and decryption respectively. Message encryption performs the following functions: -  Privacy:  Encryption ensures that only the person for whom the message is intended can decrypt and read it. -  Prevention of Tampering:  An encoded message or document usually cannot be altered in transit. However, the use of some types of encryption algorithm renders messages susceptible to tampering. A  Digital Signature  is a way of providing authenticity to messages and digital documents. It is the digital equivalent of physically signing a letter or a document. It has the following functions: -  Authentication of Emails and Documents:  Digital signatures allow the recipient of

11 Easy and Advanced Steps Credit: www.techtrends.co.zm Does your computer start up slowly? Do applications run slowly and freeze all the time? Do you want to get rid of these problems without having to spend money? These steps here will help you resolve your problems for free. Simple Steps   1. When you turn on your computer, ensure that there are no discs in the ROM drive or any attached USB devices. Having any of these causes the computer to start slowly as it tries to read them for possible boot options. 2.  Change your Power Plan . Click on the battery icon on the taskbar in the lower right-hand corner of your screen. This displays the power options menu. If "High Performance" is not selected as the power plan, select it. This power plan maximizes system performance. Use this option if your computer is plugged in and charging. 3.  Uninstall unused programs  . This is self-explanatory. Unwanted and unused software take up hard disk space thereby reducing

Email Marketing is one important tool that you as a business owner can use to improve the marketing, profits and customer service of your business. It is simple, cheap and fast, can be highly targeted, has a global reach, and generates a faster response from your audience. So you already have an email marketing campaign but how can you make it really effective? Here are five (5) tips that will make your email marketing more potent: 1.   Make Signing Up Easy and Confidential: Ask only for information that is most important to your business such as an email address and a first name. Make all other information optional. Tell the subscribers that their information will be kept private and that they have the option to opt-out. People who give you permission to send them emails are likelier to be customers. 2.   Segment Your Lists: Do not send one generic email to everyone. According to Salesforce.com, you should section your email lists into target groups. You may do so using

The large number of people on social networks is the main reason why you can create a successful business using social networking. It is does not matter whether your business is online or offline, social networking can make a huge difference to your bottom line. Putting your enterprise on a social network is akin to owning a store in a large shopping mall. You are where you are supposed to be but how do customers find your store amidst all the other stores and how do you get them to walk in and make a purchase? Simply belonging to one of Facebook, Twitter,  Google  Plus, and LinkedIn is not enough. How then can you achieve success through social networking? Here are some helpful tips: How to Achieve Success in Your Business/Profession through Social Networking 1.  Choose your social network wisely:  As a person who runs a business, you should already understand the need to find the right market for your products or services. There is also a right social network for your type

Learn How to Make Google Display Ads that Match the Content on your Website If the ads displayed on your website do not match your content, you are losing money. For websites with little traffic, it is very important that you make the most of the visitors you get by making sure your ads match your content. How can you do this? The following are two ways provided by Google's AdSense program: Competitive Ad Filter This tool allows you to block individual ads by determining their destination URLs (web addresses) and having them filtered. To do this, open an Internet Explorer browser window (the AdSense Preview Tool mentioned below only works on Windows versions of IE 6 and above) and follow this procedure: - Log into your Google AdSense account and click on the AdSense Setup tab. - On the AdSense Setup page, select Competitive Ad Filter. This will display a page that shows the filter box where you enter the URLs to be blocked. If you already know the destination URL of an

Plus Tips on Verifying Public Keys and using Digital Signatures When Encrypting Messages Message encryption  is the process of converting a message into an undecipherable form so that only the person who it is intended for can read it. In this age of hacking, high-tech snooping and intelligence gathering that is carried out even by governments of some countries, message encryption may be a reasonable option for many people. Message encryption here will refer to methods of encoding or decoding messages that is used with desktop mail clients like Mozilla Thunderbird or Microsoft Outlook. This is in contrast to encrypted web-based mail like HushMail. Encryption may be carried out using symmetric key encryption also known as single-key encryption or it can be done using asymmetric encryption popularly called public key encryption. This article will explain public key encryption. Public key encryption is also known as public key cryptography and it involves the generation of two