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IPSec

You will also see the “IP Security Policies” section in your Local Security Policy. IPSec is an advanced topic that requires knowledge of some important networking and security concepts. In brief, the IPSec standards are newly built into the Windows 2000 and Windows XP operating systems. Although TCP/IP filtering on the network adapter is one method of restricting port access, it can be cumbersome and difficult to manage because you have to enable all ports that you want to use. TCP/IP filtering does not scale well to ranges of ports that are needed, and it can be difficult to understand.

IPSec is a combination of protocol standards that protect IP communications between two computers. You know that TCP/IP is the language that computers use to communicate with each other across the Internet. TCP/IP is an old set of protocols that was never prepared to deal with all of the evildoers on the Internet. It is inherently insecure and easily taken advantage of by attackers and criminals.


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