IPv4 Definition IPv4 is the most widely used version of the Internet Protocol. It defines IP addresses in a 32-bit format, which looks like 220.127.116.11. Each three-digit section can include a number from 0 to 255, which means the total number of IPv4 addresses available is 4,294,967,296 (256 x 256 x 256 x 256 or 2^32). Each computer ..
Zone File Definition A zone file is stored on a name server and provides information about one or more domain names. Each zone file contains a list of DNS records with mappings between domain names and IP addresses. These records define the IP address of a domain name, the reverse lookup of an IP to other domains, and contain DNS and mail ..
Spoofing Definition The word “spoof” means to hoax, trick, or deceive. Therefore, in the IT world, spoofing refers tricking or deceiving computer systems or other computer users. This is typically done by hiding one’s identity or faking the identity of another user on the Internet. Spoofing can take place on the Internet in several different ways. One ..
SPF Definition Stands for “Sender Policy Framework.” SPF is a email authentication system designed to prevent email spoofing. It works by verifying that an email message is sent from an authorized IP address. SPF is commonly used alongside DKIM, another email verification technology, though they are not dependent on each other. In order for SPF verification to take ..
DNS Record Definition DNS records are stored in zone files and are used for translating domain names to IP addresses. They also contain other data, including the domain name’s name server and mail server information. If there are domain name aliases, such as the commonly used “www” preceding the domain name, these will also be listed in the DNS record. A typical DNS ..
DKIM Definition Stands for “DomainKeys Identified Mail.” DKIM is an email authentication technology that verifies a message was sent from a legitimate user of an email address. It is designed to prevent email forgery or spoofing. DKIM works by attaching a digital signature to the header of an email message. The header is generated by the outgoing mail server and is unique to the domain ..
Twitter Definition Twitter is an online service that allows you to share updates with other users by answering one simple question: “What are you doing?” In order to use Twitter, you must first sign up for a free account. Once you have created your account, you can post your own updates and view the updates ..
Home Page Definition A home page is a webpage that serves as the starting point of website. It is the default webpage that loads when you visit a web address that only contains a domain name. For example, visiting https://techterms.com will display the Tech Terms home page. The home page is located in the root directory of a website. Most web server allow the home page to ..
Social Networking Definition When the Web became popular in the mid-1990s, it enabled people to share information in ways that were never possible before. But as limitless as the possibilities seemed, there was a personal aspect that was lacking. While users could create home pages and post their own content on the Web, these individual sites lacked ..
Personal URL Definition Many websites that host online communities allow you to create you own personal URL within the website. This custom URL typically serves as the Web address of your profile page and can be shared and bookmarked by other users. Examples of websites that allow you to choose a personal URL include social networking sites like Facebook, photo sharing sites ..