Internet Protocol Security (IPSec)

"Internet Protocol Security (IPSec)" is a framework of open standards, security services through the use of encryption to ensure that Internet Protocol (IP) network, confidential and secure communications. Microsoft ® Windows ® 2000, Windows XP and Windows Server 2003 family implementation of IPSec is based on the "Internet Engineering Task Force (IETF)" IPSec working group developing standards.
Introduction
IPSec is a network of long-term direction of safety. It does this by end to end to provide proactive security protection to prevent the private network and Internet attacks. In communications, only the sender and receiver had just only need to understand IPSec-protected computer. In Windows XP and Windows Server 2003 family, IPSec provides the ability to protect the working group, local area network computers, domain clients and servers, branch offices (in the physical body for the remote), Extranet and communication between the roaming client .
The role of target
1, the protection of IP packet contents.
2, through the packet filtering and the implementation of a trusted communications network to defend against attacks.
 These two goals through the use of encryption-based protection services, security, and dynamic key management protocol to achieve. The basis for the private network computers, domains, sites, remote sites, Extranet and dial-up users to provide communication between the protection of both the power and flexibility. It can even be used to block specific types of incoming and outgoing communications.
3, which has been receiving and sending the most important.