Internet Protocol security (IPSec) is a framework of open standards for ensuring private, secure communications over Internet Protocol (IP) networks, through the use of cryptographic security services.

• For tips about using IPSec, see IPSec Best practices.
  
• For help with specific tasks, see IPSec How To....
  
• For general background information, see IPSec Concepts.
  
• For problem-solving instructions, see IPSec Troubleshooting.
  

Note

• Portions of IPSec-related services were jointly developed by Microsoft® and Cisco Systems, Inc.