IPsec
Status: Entwurf
Abk. für IP Security, eine Menge von Protokollen, die von der IETFentwickelt wird zur Unterstützung des sicheren Austauschs von Paketen auf der IP-Schicht. Es wird erwartet, dass IPsec weite Verwendung bei der Implementierung von Virtual Private Networks (VPNs) findet IPsec supports two encryption modes: Transport and Tunnel. Transport mode encrypts only the data portion (payload) of each packet, but leaves the header untouched. The more secure Tunnel mode encrypts both the header and the payload. On the receiving side, an IPSec-compliant device decrypts each packet. For IPsec to work, the sending and receiving devices must share a public key. This is accomplished through a protocol known as Internet Security Association and Key Management Protocol/Oakley (ISAKMP/Oakley), which allows the receiver to obtain a public key and authenticate the sender using digital certificates. http://webopedia.internet.com/TERM/I/IPsec.html
