IPSec Overview
IPSec is a suite of protocols which was designed by Internet Engineering Task Force (IETF) to protect data by signing and encrypting data before it is transmitted over public networks.

Securing the Network
When planning for and implementing network security, the activities which you should be performing would typically involve the following:

Planning how the network infrastructure will be secured from both internal and external threats.

Defining and creating internal and external security boundaries.

IPSec Policies Overview
IPSec encrypts data information contained in IP datagrams through encapsulation to provide data integrity, data confidentiality, data origin authentication, and replay protection. The two main IPSec components that are installed when you install IPSec are the IPSec Policy Agent and the IPSec driver.

Using the IP Security Monitor Snap-In to Monitor IPSec
The IP Security Monitor snap-in, a new feature in Windows Server 2003, can be used to monitor and troubleshoot IPSec activity. The IP Security Monitor snap-in provides enhanced IPSec security monitoring.

IPSec Review
IPSec is a framework of open standards for encrypting TCP/IP traffic within networking environments. IPSec works by encrypting the information contained in IP datagrams through encapsulating to provide data integrity, data confidentiality, data origin authentication, and replay protection.