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Security

Why Security?

Computer security is required because most organizations can be damaged by hostile software or intruders. There may be several forms of damage which are obviously interrelated. These include:

• Damage or destruction of computer systems.
• Damage or destruction of internal data.
• Loss of sensitive information to hostile parties.
• Use of sensitive information to steal items of monitory value.
• Use of sensitive information against the organization's customers which may result in legal action by customers against the organization and loss of customers.
• Damage to the reputation of an organization.
• Monitory damage due to loss of sensitive information, destruction of data, hostile use of sensitive data, or damage to the organization's reputation.

Layered Security

The fact that complete security is impossible is the reason security experts recommend "layered security". The idea is to have multiple ways of preventing an intrusion to decrease the chance that intrusions will be successful. For example, you should have virus protection on your client computers. To help layer this security you should also filter viruses at your email server. To help even more, you should block the most dangerous types of email attachments to prevent unrecognized viruses and other hostile software from entering your network. Another good defense layer would also include educating your users about viruses, how they spread, and how to avoid them.

Physical Security

Your organization should be aware how physically secure every aspect of its network is because if an intruder gets physical access, they can get your data. Be sure the your organization properly secures locations and consider the following:

• Servers - Contain your data and information about how to access that data.
• Workstations - Man contain some sensitive data and can be used to attack other computers.
• Routers, switches, bridges, hubs and any other network equipment may be used as an access point to your network.
• Network wiring and media and where they pass through may be used to access your network or place a wireless access point to your network.
• External media which may be used between organizational sites or to other sites the organization does business with.
• Locations of staff who may have information that a hostile party can use.
• Some employees may take data home or may take laptops home or use laptops on the internet from home then bring them to work. Any information on these laptops should be considered to be at risk and these laptops should be secure according to proper policy when connected externally on the network (more on this later).

Monitor: Finally understand how your network is being used and have comprehensive information about user activity at your fingertips. Control: Ensure your network resources are used for the benefit of the organisation, not abused by naive or malicious users. Secure: Protect your network from both existing and unknown threats with the most comprehensive and seamless single security product on the market.

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Microsoft Internet Security & Acceleration Server

What is ISA Server?

Microsoft Internet Security and Acceleration (ISA) Server is an integrated network edge security gateway that helps protect IT environments from Internet-based threats while providing users fast and secure remote access to applications and data.

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