ZyXEL MAX318M User Guide - Page 136
Security > L2TP VPN, > L2TP Client > Add, Table 58, LABEL, DESCRIPTION
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Chapter 8 Security Click Security > L2TP VPN > L2TP Client > Add to open this screen as shown next. Figure 76 L2TP Client: Add This screen contains the following fields: Table 58 L2TP Client: Add LABEL Profile Name L2TP Protocol Version NAT Mode? Auth Protocol DESCRIPTION Enter the name for this client connection. 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. 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. Select the Authentication Protocol allowed for the connection. Options are: MPPE Encryption • 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. If MSCHAPv1 or MSCHAPv2 is selected as an Auth Protocol, use the dropdown list box to select the type of Microsoft Point-to-Point Encryption (MPPE). Options are: • MPPE 40 bits - MPPE with 40 bit session key length • MPPE 128 bits - MPPE with 128 bit session key length • Auto - Automatically select either MPPE 40 bits or MPPE 128 bits MPPE Stateful? Select Yes to enable stateful MPPE encryption. This can increase performance over stateless MPPE, but should not be used in lossy network environments like layer two tunnels over the Internet. Server IP Address Enter the IP address of the L2TP server. User Name Enter the user name for connecting to the L2TP server. 136 WiMAX Device Configuration User's Guide