What are the biggest threats to a network in terms of securi

What are the biggest threats to a network in terms of security and why?

Describe what you would do to protect a network from attack, mention any appliances or products you
can recommend.

Solution

Network security is the major part of a network that needs to be mentained as various important information is being passed from the various systems.And is very vulnerable to attack.The biggest threats are as follows:

1) Viruses and warms

The after-effects of viruses are so dangerous that they take second place. The vulnerability here is the back doors viruses leave in their wake, or the chinks in the corporate armour that later generations of code can exploit.

the worms that turn PCs into remote mail servers and send cascading volumes of e-mails that cause denial of service attacks. These attacks are becoming more sophisticated.

2) Trozen Horses

Trojan is any malicious computer program which is used to hack into a computer by misleading users of its true intent

3)Phishing:

Phishing, or identity theft, is most commonly targeted at bank customers but everybody should be alert to it. The bank users receive an e-mail as if from the bank asking for their log-on and password and, according to risk specialist company mi2g, less than half of 1% of customers oblige, a significant figure if millions of e-mails are sent.

4) Password Attack

Password attacks are the classic way to gain access to a computer system is to find out the password and log in. The growth of the Internet has created unlimited opportunity for these intruders to steal secrets, tinker with Web sites, abscond with credit card information, or just generally make mischief

5)Shared Computers

When computer are shared it create a LAN type network which shares all the various information by the users and the informtio can easiy access by any one at that time.It is not secure .

Security in NETWORK is a MYTH.

A denial of service attack might be thwarted if the security system recognises high levels of a particular sort of traffic before they become so high the network falls over.