MitraStar Movistar GPT-2541GNAC, User Manual

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Chapter 5 VPN 57
5.1.1.1 Name and Server IP Address
This screen displays when you add a new L2TP client WAN service.
Figure 31 L2TP Client: Add
This screen contains the following fields:
Table 29 L2TP Client: Add
LABEL DESCRIPTION
Tunnel Name Enter the name for this client connection.
L2TP Server Ip
Address
Enter the IP address of the L2TP server.
L2TP Protocol
Version
Select the L2TP Protocol Version 2 or 3 . L2TPv2 is a standard method for
tunneling Point-to-Point Protocol (PPP) while L2TPv3 provides improved
support for other types of networks including frame relay and ATM.
NAT Mode? Select Yes if the client will be located behind a NAT enabled router. This will
allow multiple clients using NAT to connect with L2TP at the same time.
Auth Protocol Select the Authentication Protocol allowed for the connection. Options are:
PAP - Password Authentication Protocol (PAP) authentication occurs in clear
text and does not use encryption. It’s probably not a good idea to rely on this
for security.
CHAP - Challenge Handshake Authentication Protocol (CHAP) provides
authentication through a shared secret key and uses a three way handshake.
MSCHAPv1 - Microsoft CHAP v1 (MSCHAPv1) provides authentication
through a shared secret key and uses a three way handshake. It provides
improved usability with Microsoft products.
MSCHAPv2 - Microsoft CHAP v2 (MSCHAPv2) provides encryption through a
shared secret key and uses a three way handshake. It provides additional
security over MSCHAPv1 , including two-way authentication.
MPPE
Encryption
If MSCHAPv1 or MSCHAPv2 is selected as an Auth Protocol , use the drop-
down list box to select the type of Microsoft Point-to-Point Encryption
(MPPE). Options are:
MPPE 40 - MPPE with 40 bit session key length
MPPE 128 - MPPE with 128 bit session key length
Auto - Automatically select either MPPE 40 or MPPE 128