Digi TransPort WR11 - Virtual Private Networks (Vpns)

Configuring Virtual Private Networking (VPN) Virtual Private Networks (VPNs)
Digi TransPort® Routers User Guide
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Virtual Private Networks (VPNs)
Virtual Private Networks (VPNs) securely connect two private networks together so that devices may
connect from one network to the other network using secure channels. VPN uses IP Security (IPSec)
technology to protect the transferring of data over the Internet. This section covers concepts and
settings for configuring VPNs.
VPNs (Virtual Private Networks) are networks that use the IPSec protocols to provide one or more
secure routes, or tunnels, between endpoints. Users are issued either a shared secret key or public/
private key pair that is associated with their identity. When a message is sent from one user to
another, it is automatically signed with the user’s key. The receiver uses the secret key or the
sender’s public key to decrypt the message. The router uses these keys during IKE exchanges along
with other information to create session keys that only apply for the lifetime of that IKE exchange.