Network Address Translation (NAT) Network Address Translation (NAT) is an Internet Protocol (IP) conservation technique that allows network users to have many IP addresses locally and one or few global addresses (Forouzan & Fegan, 2007). Network traffic within the local network setting uses the locally allocated IP addresses while all traffic going outside or entering […]
Introduction A network topology is a pattern that devices are connected into local area network (LAN), in a short, which mostly uses some sort of cabling methodologies, such as copper wire and fiber-optic cable. According to (White, 2016), “A local area network (LAN) is a communications network that interconnects a variety of data communications devices […]
What is Multiplexing Multiplexing is described by Forouza and Fegan (2007) as a set of procedures used to concurrently transmit several signals over a particular data link. The main goal of multiplexing is efficiency. Different multiplexing techniques are utilized to achieve the desired bandwidth size, increase privacy and reduce jamming. Below are applications that might […]
What is an Operating System (OS)? An Operating System (OS) is a computer program installed to the computer on its initial boot up and used to manage other software and the hardware components while providing a graphical user interface (GUI) for computer users (Peopleware) to interact with the computer (White, 2016). An OS is ranked […]
Introduction OSI model, an abbreviation for Open System Interconnection model, is a conceptual network architecture made up of protocols that govern how different systems communicate over a network irrespective of their underlying architecture (Forouzan & Fegan, 2007). This model is made up of seven related layers that play a part in transmitting information over a […]
Firewall is a network system designed to monitor and control a network by scanning incoming and outbound network traffic and network data packets according to a set of predefined rules (Zhu, & Qiu, 2015). A firewall is implemented to detect and block intrusion and/or malware from entering a local or private network. Packet Filtering Firewalls […]
Encryption is a very important part of cyber security. It ensures that data is only viewed by intended users. According to Rouse (2014), Encryption is a process by which plaintext or plain data is transformed from readable form to encoded form that cannot be read or decrypted by any entity without a decryption key. Encryption […]
Equifax Data Breach is among the biggest hacks within the last decade. While companies try to stay one step ahead of cyber criminals, the case of Equifax is different because they had almost two months to install preventive measures that would have prevented the breach. This blog will discuss what problem allowed hackers in, the […]
What is OSI Model? OSI, an acronym for Open Systems Interconnection, is a model designed by the International Standards Organization (ISO) to explain how applications converse over a network (Beal, 1999 & Rouse, 2014). The OSI model is, however, not popularly used by developers because the most common internet protocols, TCP/IP, do not point clearly […]
Although many people use the two words interchangeably, it is true that the Internet and the web are not the same. A research by Pew Research Survey indicated that only 23% of the respondents knew that the internet and the web are actually not the same (Smith, 2014). Internet, as defined by Rouse (2005), is […]