The encryption protocol MPPE (Microsoft Point-To-Point Encryption) secures data transmission over PPP and VPN connections with key lengths of up to 128 bit.
MPPE uses the "stateless mode" for encryption to ensure that both communication partners are synchronized. In this mode, the session key changes with each transmitted data packet. The two stations also synchronize their encryption tables (where the keys are stored for data encryption) each time.
VPN-capable devices use MPPE to encrypt data transfer by PPTP tunnel.
In LANconfig you find this setting under .
If you have enabled the MPPE encryption protocol, connections to clients are established only under the following conditions:
- The client establishes a connection secured with MPPE. The router rejects the request for other protocols.
- The client uses as a minimum the key length specified in the router. With shorter key lengths the router refuses to connect and, with stronger encryption, the router switches to the appropriate key length.
