Ppp General Setup - Draytek Vigor 3100 Series User Manual

3 . 6 . 2 P P P G e
3 . 6 . 2 P P P G e
This submenu only applies to PPP-related VPN connections, such as PPTP, L2TP, L2TP over
IPSec.
Dial-In PPP Authentication PAP Only Select this option to force the router to authenticate
PAP or CHAP
Dial-In PPP Encryption (MPPE Optional MPPE) This option represents that the MPPE
Require MPPE (40/128bits) Selecting this option will force the router to encrypt packets by
Maximum MPPE
Vigor3100 Series User's Guide
n e r a l S e t u p
n e r a l S e t u p
dial-in users with the PAP protocol.
Selecting this option means the router will attempt to
authenticate dial-in users with the CHAP protocol first. If the
dial-in user does not support this protocol, it will fall back to
use the PAP protocol for authentication.
encryption method will be optionally employed in the router for
the remote dial-in user. If the remote dial-in user does not
support the MPPE encryption algorithm, the router will transmit
"no MPPE encrypted packets". Otherwise, the MPPE
encryption scheme will be used to encrypt the data.
using the MPPE encryption algorithm. In addition, the remote
dial-in user will use 40-bit to perform encryption prior to using
128-bit for encryption. In other words, if 40-bit MPPE
encryption method is not available, then 128-bit encryption
scheme will be applied to encrypt the data.
This option indicates that the router will use the MPPE
encryption scheme with maximum bits (128 bits) to encrypt the
data.
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