Tag Archives: Communication

Tunnel

Network Tunnel

Definition:

In computer terms a tunnel is a bi-directional connection between two networks. An example of such a tunnel would be when someone connects to their workplace from their home PC. They would use VPN (virtual private network) software to establish the connection.

This creates a secure connection over a public network, like the Internet. All the data is encrypted and secure from tampering. Another example would be when you make payments over the Internet. You will notice that the URL of the page that processes the payment starts with https://. This is an encrypted connection or tunnel between your browser and the web site.

Tunneling is also referred to as encapsulation. One type of network protocol is encapsulated by another. SSH and SSL are example of such secure protocols.

 

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Firewall

Firewall

Definition:

In computing terms, a firewall is either a device or software program designed to block unauthorized access or allow authorized access to computer networks based on a set of configurable rules.

Most modern operating system have built-in software firewalls to protect user computers from malicious attacks from hackers or programs. There are also various third party software and hardware firewall solutions available.

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Bandwidth Throttling

Bandwidth throttling - its choking me!

Definition:

In computer networking terms bandwidth throttling refers to the limiting of usable bandwidth. Network administrators use bandwidth throttling to limit the amount of bandwidth on a per user basis over the entire network.

The main purpose is to alleviate network congestion and to ensure that all users have equal usage of the network resources and to prevent some users from hogging the network bandwidth.

Further reading:

 

 

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Bandwidth

Bandwidth - give me more!

Definition:

In computer networking terms, bandwidth is a term used to indicate the data transfer rate of a specific communication medium. In other words, how much data, measured in bits, can be transferred from one point to another in a second. Bandwidth is usually indicated in bits per second or bps.

In internet hosting terms, bandwidth is more loosely used to indicate the amount of data transferred to and from a web site over a given period of time. Some web hosting companies will limit the amount of bandwidth allocated to a hosted web site over a period of a month. They will then charge “over bandwidth” usage fees when bandwidth usage goes over allotted amount.

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