Ppp Encryption; Figure 9-10: Ppp Authentication Settings; Table 9-5: Ppp Authentication Parameter Descriptions - AudioCodes MP-202 User Manual

This section allows you to select the authentication protocols your gateway may use when
negotiating with a PPTP server. Select all the protocols if no information is available about
the server's authentication protocols. Note that encryption is performed only if 'Microsoft
CHAP', 'Microsoft CHAP version 2', or both are selected.

Table 9-5: PPP Authentication Parameter Descriptions

Parameter
Login User Name As agreed with ISP.
Login Password As agreed with ISP.
Support Password Authentication Protocol (PAP) is a simple, plaintext authentication
Unencrypted scheme. The user name and password are requested by your networking peer
Password (PAP) in plaintext. PAP, however, is not a secure authentication protocol. Man-in-the-
middle attacks can easily determine the remote access client's password. PAP
offers no protection against replay attacks, remote client impersonation, or
remote server impersonation.
Support Challenge The Challenge Handshake Authentication Protocol (CHAP) is a challenge-
Handshake response authentication protocol that uses MD5 to hash the response to a
Authentication challenge. CHAP protects against replay attacks by using an arbitrary
(CHAP) challenge string per authentication attempt.
Support Microsoft Select this check box if you are communicating with a peer that uses Microsoft
CHAP CHAP authentication protocol.
Support Microsoft Select this check box if you are communicating with a peer that uses Microsoft
CHAP Version 2 CHAP Version 2 authentication protocol.
9.2.4

PPP Encryption

PPP supports encryption facilities to secure the data across the network connection. A
wide variety of encryption methods may be negotiated, although typically only one method
is used in each direction of the link.
MP-202 Telephone Adapter

Figure 9-10: PPP Authentication Settings

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Description
Document #: LTRT-50605
User's Manual