Chapter 12 VPN
12.1 IPSec
IPSec enables secure connections to be set up between two locations (VPN). This enables
sensitive business data to be transferred via an unsecure medium such as the Internet.
The devices use function here as the endpoints of the VPN tunnel. IPSec involves a num-
ber of Internet Internet Engineering Task Force (IETF) standards, which specify mechan-
isms for the protection and authentication of IP packets. IPSec offers mechanisms for en-
crypting and decrypting the data transferred in the IP packets. The IPSec implementation
can also be smoothly integrated in a Public Key Infrastructure (PKI). The funkwerk IPSec
implementation achieves this firstly by using the Authentication Header (AH) protocol and
Encapsulated Security Payload (ESP) protocol, and secondly through the use of crypto-
graphic key key administration mechanisms like the Internet Key Exchange (IKE) protocol.
12.1.1 IPSec Peers
Peer a terminator point of communication in a computer network is called. Each Peer offers
thereby its services and uses the services of the other Peers.
In the VPN -> IPSec -> IPSec Peers menu a list of all configured IPSec peers is shown.
Fig. 69:
VPN
->
IPSec
->
IPSec Peers
12 VPN
Funkwerk Enterprise Communications GmbH
230
funkwerk TR200aw/bw