Internet security is a tree branch of computer security specifically related to the Internet, often involving browser security but also networksecurity on a more general level as it applies to other applications or operating systems on a whole.
Internet security relies on specific resources and standards for protecting data that gets sent through the Internet. This includes various kinds of encryption such as Pretty Good Privacy (PGP). Other aspects of a secure Web setup includes firewalls, which block unwanted traffic, and anti-malware, anti-spyware and anti-virus programs that work from specific networks or devices to monitor Internet traffic for dangerous attachments.
TYPES OF INTERNET SECURITY
1. Network layer security: TCP/IP which stands for Transmission Control Protocol (TCP) and Internet Protocol (IP) aka Internet protocol suite can be made secure with the help of cryptographic methods and protocols. These protocols include Secure Sockets Layer (SSL), succeeded by Transport Layer Security (TLS) for web traffic, Pretty Good Privacy (PGP) for email, and IPsec for the network layer security.
2. Virus protection : While it may not be obvious at first, you have a lot of personal information stored in various places on your computer. One of the most important types of internet security to have is an anti-virus program. There are two parts to a good virus protection system, a firewall and a scanner. The firewall should always be enabled while you’re online. It works to recognize potential dangers and will alert you while stopping them. The scanner will allow you to see if anything malicious has somehow found its way on to your computer.
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4. File backups : While some viruses are created to infect and steal your information, others are made to destroy it. I’m sure there are some very important files on your computer that you would hate to lose. What would you do if all of your files were deleted? This could mean losing important documents or years worth of family pictures. In addition to viruses infecting your computer, there are also times that computers break or become damaged, making retrieving important information sometimes impossible. One way to protect against either of these situations is to run regular file backups. With a consistent backup process in place, it’s not a big deal if your computer malfunctions; you can restore all your files with just a few clicks. These types of virus are strong enough to breach you security firewall and gain access to your network IP.
5. Internet protocol security : This protocol is designed to protect communication in a secure manner using TCP/IP aka Internet protocol suite. It is a set of security extensions developed by the Internet Task force IETF, and it provides security and authentication at the IP layer by transforming data using encryption. IPsec is a must if you want to make your network security super strong.Two main types of transformation that form the basis of IPsec: the Authentication Header (AH) and ESP. These two protocols provide data integrity, data origin authentication, and anti-replay service. These protocols can be used alone or in combination to provide the desired set of security services for the Internet Protocol (IP) layer.
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And this is how IP security works.
6. E-mail security : Email messages are composed, delivered, and stored in a multiple step process, which starts with the message's composition. When the user finishes composing the message and sends it, the message is transformed into a standard format: an RFC 2822 formatted message. Afterwards, the message can be transmitted. Using a network connection, the mail client, referred to as a mail user agent (MUA), connects to a mail transfer agent (MTA) operating on the mail server. The mail client then provides the sender’s identity to the server. Next, using the mail server commands, the client sends the recipient list to the mail server. The client then supplies the message. Once the mail server receives and processes the message, several events occur: recipient server identification, connection establishment, and message transmission. Using Domain Name System (DNS) services, the sender’s mail server determines the mail server(s) for the recipient(s). Then, the server opens up a connection(s) to the recipient mail server(s) and sends the message employing a process similar to that used by the originating client, delivering the message to the recipient(s).
why and how to use secured email
Top 10 Internet security suits : Here is a link that displays the top 10 internet security softwares on the bases of software review.
http://www.pcworld.com/product/collection/3247/2010-suites.html
The most important thing of internet security is FIREWALLS.
A computer firewall controls access between networks. It generally consists of gateways and filters which vary from one firewall to another. Firewalls also screen network traffic and are able to block traffic that is dangerous. Firewalls act as the intermediate server between SMTP and Hypertext Transfer Protocol (HTTP) connections.
Role of FIREWALLS in Internet security :
Firewalls impose restrictions on incoming and outgoing Network packets to and from private networks. Incoming or outgoing traffic must pass through the firewall; only authorized traffic is allowed to pass through it. Firewalls create checkpoints between an internal private network and the public Internet. They can also serve as the platform for IPsec. Using tunnel mode capability, firewall can be used to implement VPNs. Firewalls can also limit network exposure by hiding the internal network system and information from the public Internet.
http://www.pcworld.com/product/collection/3247/2010-suites.html
The most important thing of internet security is FIREWALLS.
A computer firewall controls access between networks. It generally consists of gateways and filters which vary from one firewall to another. Firewalls also screen network traffic and are able to block traffic that is dangerous. Firewalls act as the intermediate server between SMTP and Hypertext Transfer Protocol (HTTP) connections.
Role of FIREWALLS in Internet security :
Firewalls impose restrictions on incoming and outgoing Network packets to and from private networks. Incoming or outgoing traffic must pass through the firewall; only authorized traffic is allowed to pass through it. Firewalls create checkpoints between an internal private network and the public Internet. They can also serve as the platform for IPsec. Using tunnel mode capability, firewall can be used to implement VPNs. Firewalls can also limit network exposure by hiding the internal network system and information from the public Internet.
Types of FIREWALLS :
Malicious Software's : A computer user can be tricked or forced into downloading software onto a computer that is of malicious intent. Such programs are known as malware and come in many forms, such as viruses, Trojan horses, spyware, and worms. Malicious software is sometimes used to form bot nets.
Virus
Computer Viruses are programs that can replicate their structures or effects by infecting other files or structures on a computer. The common use of a virus is to take over a computer to steal data.
Worms
Computer worms are programs that can replicate themselves throughout a computer network, performing malicious tasks throughout.
Trojan horses
A Trojan horse commonly known as a Trojan is a general term for malicious software that pretends to be harmless, so that a user willingly allows it to be downloaded onto the computer.
Botnet
A botnet is a network of zombie computers that have been taken over by a robot or bot that performs large-scale malicious acts for the creator of the botnet.
Spyware
The term spyware refers to programs that surreptitiously monitor activity on a computer system and report that information to others without the user's consent
Antivirus
Antivirus and Internet security programs can protect a programmable device from malware by detecting and eliminating viruses; Antivirus software was mainly shareware in the early years of the Internet, but there are now several free security
what is malware and how to get rid of them
