A firewall is a group of connected programs, located at a network gateway server that protects the resources of a private network from users and from other networks. Mostly, a firewall working intimately with a router program, look at each network packet to decide whether to forward it regarding its destination. A firewall also enters or works with an alternative server that makes network requirements on behalf of workstation users.

Firewalls are regularly used to avoid unauthorized internet users from approaching private networks connected to the Internet. A firewall is considered a first line of security in protecting private information. A firewall is a blockade between the public internet and our private computer system.

Firewalls can protect both individual computers and corporate networks from harsh intrusion from the Internet, but to use correctly it must be understand clearly. A firewall be placed at the connection point or gateway between the two networks, usually a private network and a public network like the Internet.

File Transfer Protocol is known as FTP. This File Transfer Protocol is a technique for transferring the files over the Internet. File Transfer Protocol permits a computer user to log onto the Internet and download or recover a file from a server without having a password account on the system. File Transfer Protocol is a normal Internet protocol; it is the simplest way to replace files among computers on the Internet. File Transfer Protocol are mainly used to download programs that we select from a Web page.

By using File Transfer Protocol we can also update delete, rename, move, and copy files at a server. File transfer protocol will transfer one or more files from one place to a different place. The simple file transfer protocol tool will offers to do many things like download software, upload our own web pages, transfer information between our home and work machines, and etc… One of the main advantages of file transfer protocol is that it is one of the best ways to get large files from one computer to another.

Broadband over Power Line is also known as power line communication. Broadband over power line is a technology that allows Internet data to be transmitted more efficacy power lines. We can modulate the high frequency radio waves with the digital signals from the internet using Broadband over Power Line. Broadband over Power Line function works very similar at speeds to the digital subscriber line. The Broadband over Power Line is a new advanced technology of Power-Line Communications technology.

It uses the accessible communications; were Broadband over Power Line can denote the low-cost broadband can be made an actuality in areas that cannot get DSL, cable or wireless broadband. By using the Broadband over Power Line we can able to control appliances with our PC. Trough the Broadband over Power Line technology yet homes in extremely distant areas can now probably get broadband, without having the option to the high latency satellite broadband.

SAN is known as Storage Area Networks. SAN is a keen network which is separated from WANs and LANs. A storage area network is a high-speed special Principle network that interrelate different kinds of data storage devices. The main reason of the SAN is to permit multiple servers access to a pool of storage in which any server can probably have the right to use any storage unit. The benefits of the SAN is that it can be increased like multiple servers can share data successively, without transferring the data to the backup server the backing up devices can be done by transferring data directly from device to device.

A SAN is used to connect many different devices and hosts to give right of entry to any device from anywhere. The main benefit in SAN is that it simplifies the network infrastructure and makes it easier to manage. SANs can slot in sub networks through network-attached storage systems. When compare to the local storage device SAN area networks allows much enhanced input and output performance.

All the devices available in LonWorks network will communicate all the way through LonWorks protocol. LonWorks networks can be applied in excess of several intermediate as well as power line, twisted pair, radio frequency, infrared, coaxial cable, and fiber optics. A main aim of LonWorks is to provide developers, as of the same or different companies, the ability is to plan products that will be able to interact with one another.The protocol was intended to allow highly consistent, peer-to-peer as well as hierarchical networking among control devices manufactured by different suppliers.

The LonWorks protocol can optionally provide nonstop acknowledgement of messages, confirmation of messages, and main concern is to release to provide surrounded transaction period. The LonWorks protocol provides common request structures that make certain interoperability using powerful concepts called network variables and Standard Network Variable Types. LonWorks protocol are mainly used for the automation a variety of functions within buildings like lighting and HVAC. Now a days LonWorks are Manufacturers in a many of industries as well as building, home, transportation, utility, and industrial automation.

RNC is known as the Radio Network Controller. The main purpose of the Radio Network Controller is used to manage the radio channels and the global channels. The Radio Network Controller is responsible to mange and control the variety of base stations. The Radio Network Controller is a main part in the UMTS radio access network. A Radio Network Controller acts as the border between the wireless devices communicating and the network edge.

To mange the Radio controller network function we need some tools like Outer Loop Power Control, Load control, Admission Control, Packet scheduling, Handover control, Security functions and Mobility Management.The Radio Network Controller as well as carry out user data processing to run soft handoff and the use of radio network services. This will give out the required important packet handling and manipulation, as well as it multifaceted higher-level protocols. The capacity of the Radio Network Controller is a main thing in density of the selector function.

Mobile IP is used to allow mobile device users to shift from one network to another network while maintaining a permanent IP address. It is an Internet Engineering Task Force. Mobile IP is most frequently establish in wired and wireless environments where users need to carry their mobile devices from corner to corner with multiple LAN subnets with different IP addresses. Mobile IP works basically in two different bodies were as home agent and a foreign agent.

In home agent mobile nodes information are stored permanently in a home agent network. But in foreign agent the mobile nodes information are stored only after visiting its network. The main purpose of mobile IP is even when the device is not connected to the home network it allows the forwarding on internet traffic to the mobile device. In a wireless technology the mobile IP surroundings are mostly used. Using the Mobile IP device we can move from network to network between buildings on a large campus as using with our device.