A basic understanding of networking is important for anyone managing a server. Not only is it essential for getting your services online and running smoothly, it also gives you the insight to diagnose:
Connection: In networking, a connection refers to pieces of related information that are transferred through a network. This generally infers that a connection is built before the data transfer.
Packet: A packet is, generally speaking, the most basic unit that is transferred over a network. When communicating over a network, packets are the envelopes that carry your data (in pieces) from one end point to the other.
LAN: LAN stands for “local area network”. It refers to a network or a portion of a network that is not publicly accessible to the greater internet.
WAN: WAN stands for “wide area network”.It means a network that is much more extensive than a LAN. (i.e., any telecommunications network that links across metropolitan, regional, national or international boundaries)
PORT: A port is an application-specific or process-specific software construct serving as a communications endpoint in a computer’s host operating system. It is not a physical interface or location, but it allows your server to be able to communicate using more than one application.
Firewall: A firewall is a program that decides whether traffic coming into a server or going out should be allowed. A firewall usually works by creating rules for which type of traffic is acceptable on which ports. Generally, firewalls block ports that are not used by a specific application on a server. In computing, a firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic. Many personal computer operating systems include software-based firewalls to protect against threats from the public Internet.
NAT: NAT stands for Network Address Translation. It is a way to translate requests that are incoming into a routing server to the relevant devices or servers that it knows about in the LAN.
VPN: VPN stands for virtual private network. It is a means of connecting separate LANs through the internet, while maintaining privacy.
Protocol : Protocol is a set of standards and rules describing how to Transmit Data across a network. There are various levels of Protocols.
TCP / IP : TCP/IP is an acronym for Transmission Control Protocol / Internet Protocol. It is a protocol that tells how the data is transmitted across the Internet, in a secure manner.
IP : IP is an acronym for Internet Protocol. It is a protocol that is used in sending messages from one computer to another on the Internet. It is identified by four numbers separated by periods. Each IP address identifies a certain computer on the Network. An example for IP address is : 192.168.1.126 you can find the IP address of your computer.
The following are the steps to find the IP address:
1. Click Start
2. Click RUN
The Dialog box is opened.
3. In RUN dialog box, type Command Prompt or cmd
The Command window is appears.
4. In the command, type ipconfig/all
The IP address of your Computer can be viewed.
ISP: The ISP’s provide different ways to gain to the Internet. Some commercial users may want an uninterrupted connectivity to the Internet throughout the day, while home users may connect to the Internet only for a few hours in a day. Based on the requirement of the user. ISP’s provide two types of Internet access.
DNS: Domain Name Server is a server that has the Internet names and addresses. DNS convert the domain name you enter in the browser to its IP address and vice versa.
Browser : A Web Browser is the software that enables users to view and interact with web pages. Web pages can contain sound, graphics and text. A collection of related Web pages is known as a Web site. Some common example of Browser are Internet Explorer, Google Chrome, Opera, Netscape Navigator, Mozilla Firefox, etc. these browser are capable of displaying Web pages containing text, graphics, playing sound and video files like other web pages.
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