Draytek Vigor2860 User Manual page 352

Item
Dial-In PPP Authentication
Dial-In PPP Encryption
(MPPE)
Mutual Authentication
(PAP)
IP Address Assignment for
Dial-In Users
PPP Authentication
Methods
PPTP LDAP Profile
While using Radius or
338
Description
PAP Only - elect this option to force the router to
authenticate dial-in users with the PAP protocol.
PAP/CHAP/MS-CHAP/MS-CHAPv2 - 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.
Optional MPPE - This option represents that the MPPE
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.
Require MPPE (40/128bits) - Selecting this option will

force the router to encrypt packets by 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 128-bit MPPE
encryption method is not available, then 40-bit
encryption scheme will be applied to encrypt the data.
Maximum MPPE - This option indicates that the router

will use the MPPE encryption scheme with maximum
bits (128-bit) to encrypt the data.
The Mutual Authentication function is mainly used to
communicate with other routers or clients who need
bi-directional authentication in order to provide stronger
security, for example, Cisco routers. So you should enable
this function when your peer router requires mutual
authentication. You should further specify the User Name
and Password of the mutual authentication peer.
The length of the name/password is limited to 23/19
characters.
Enter a start IP address for the dial-in PPP connection. You
should choose an IP address from the local private network.
For example, if the local private network is
192.168.1.0/255.255.255.0, you could choose 192.168.1.200
as the Start IP Address.
You can configure up to four start IP addresses for LAN1 ~
LAN6.
Select the method(s) to be used for authentication in PPP
connection.
Configured LDAP profiles will be listed under such item.
Simply check the one you want to enable the PPP
authentication by LDAP server profiles.
However, if there is no profile listed, simply click the link of
PPTP LDAP Profile to create/add some new LDAP profiles
you want.
If PPP connection will be authenticated via RADIUS server or
Vigor2860 Series User's Guide