Sunday, June 29, 2008

Web Security Software

The web is evolving rapidly and become more dynamic with the use of the web 2.0 applications. But it has also been used to launch the various attacks. There are many threats browse the internet, check emails, transfers files and shop online. Every online computer can be infected with the viruses or spyware in only 20 minutes if the proper security solutions have not been implemented. The well known threats include viruses, spyware, adware, phishing, Trojan horses, malware, web worms, intruders and the cyber villains (hackers). If you computer is infected then all other connected computers can get infected automatically.

There are many internet bugs that can corrupt your data, degrade the performance of your system, steal your critical data and crash your system. There are many internet filtering, antivirus, anti spyware, anti-phishing and security solutions available. With the implementations of the web security solutions, you can protect your entire network from being attacked from the viruses, hackers and other online threats.

Some of the common techniques to deal with the online threats are to install an up-to-dated antivirus software, install and configure firewall, update your operating system, raise the security of your browse, never open any email attachment from the unknown source, never give away your passwords, credit card number, SSN and bank account’s details through the emails. Some of the web security solutions include the following.

Norton Antivirus

Norton Antivirus provides the complete solutions against the viruses, spyware and adware. It helps to protect your computer from the online threats. It works in the background so that you can surf the net, play games and download the software or music. Norton Antivirus automatically checks for the updates and blocks the emerging threats. There are a wide variety of the security products and you can pick the best product according to your requirements.

McAfee Antivirus Software

McAfee is a leader of the security risk management, intrusion detection and prevention. McAfee Internet Security Suite provides you the protection against the viruses, spyware, adware, Trojan horses and hackers. It helps to detect the thousands of the viruses on your computer.

GFI Web Monitor

GFI Web Monitoring software protect your computer from downloading the dangerous items from the internet, reduce cyberslacking, prevent data leakage and lower the risks of the social engineering and the phising websites and emails.

Zone Alarm Internet Security Suite

ZoneAlarm Internet Security Suite 7 provides the anti spam, firewall and antivirus capabilities and protect your computer from the well known internet threats.

Networking Devices

Computer network devices also known as communication devices and they constitute a data communication network. These devices are routers, switches, hubs, LAN cards, gateway, modems, hardware firewall, CSU/DSU, ISDN terminals and transceivers. In an Ethernet or WAN network, the data communication cannot be performed without these devices. Being an IT professional or a network administrator, you must have the good understanding of these devices.

Based on your business requirements, you have the select the best devices for your network and before selection, make sure that they are compatible with each other. It is recommended that you select all the devices for your IT infrastructure from the same vendor.

The top vendors are Cisco, D-Link, LinkSys, Baynet, RealTek, 3Com, NetGear, Intel, Nortel, and Lucent etc. A well designed IT infrastructure with the proper placement of the routers, servers, gateway and switches can reduce the operational cost and enhances the overall performance dramatically.

Routers

A router is a communication device that is used to connect two logically and physically different networks, two LANs, two WANs and a LAN with WAN. The main function of the router is to sorting and the distribution of the data packets to their destinations based on their IP addresses. Routers provides the connectivity between the enterprise businesses, ISPs and in the internet infrastructure, router is a main device. Cisco routers are widely used in the world. Every router has routing software, which is known as IOS. Router operates at the network layer of the OSI model. Router does not broadcast the data packets.

Switches

Like the router, a switch is an intelligent device that maps the IP address with the MAC address of the LAN card. Unlike the hubs, a switch does not broadcast the data to all the computers, it sends the data packets only to the destined computer. Switches are used in the LAN, MAN and WAN. In an Ethernet network, computers are directly connected with the switch via twisted pair cables. In a network, switches use the three methods to transmit the data i.e. store and forward, cut through and fragment free.

Hubs

The central connecting device in a computer network is known as a hub. There are two types of a hub i.e. active hub and passive hub. Every computer is directly connected with the hub. When data packets arrives at hub, it broadcast them to all the LAN cards in a network and the destined recipient picks them and all other computers discard the data packets. Hub has five, eight, sixteen and more ports and one port is known as uplink port, which is used to connect with the next hub.

Modems

A modem is a communication device that is used to provide the connectivity with the internet. Modem works in two ways i.e. modulation and demodulation. It coverts the digital data into the analog and analog to digital

LAN Cards

LAN cards or network adapters are the building blocks of a computer network. No computer can communicate without a properly installed and configured LAN card. Every LAN card is provided with a unique IP address, subnet mask, gateway and DNS (if applicable). An UTP/STP cable connects a computer with the hub or switch. Both ends of the cable have the RJ-45 connectors one is inserted into the LAN card and one in the hub/switch. LAN cards are inserted into the expansion slots inside the computer. Different LAN cards support different speed from 10/100 to 10/1000.

Multiplexer

Multiplexer is a device that is used to combining the several electrical signals into one signal.

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