Ppp Authentication - Option Audio GlobeSurfer 3G Reference Manual

• Network type: Select one of the following settings (not available in some
product versions):
– Automatic: The GlobeSurfer 3G automatically connects using the
network type that gives the best connection, UMTS or GPRS.
– Automatic, UMTS preferred: The GlobeSurfer 3G connects using
UMTS. If UMTS fails, GPRS is used instead.
– Automatic, GPRS preferred: The GlobeSurfer 3G connects using
GPRS. If GPRS fails, UMTS is used instead.
– UMTS only: The GlobeSurfer 3G connects using UMTS only.
– GPRS only: The GlobeSurfer 3G connects using GPRS only.

4.1.3 PPP Authentication

Point-to-Point Protocol (PPP) currently supports four authentication protocols:
Password Authentication Protocol (PAP), Challenge Handshake Authentica-
tion Protocol (CHAP), and Microsoft CHAP version 1 and 2.
Please note that encryption is performed only if Microsoft CHAP, Microsoft CHAP
version 2, or both are selected.
Figure 4.4: PPP Authentication Settings
Login username As agreed with ISP.
Login password As agreed with ISP.
Support unencrypted password (PAP) Password Authentication Protocol (PAP)
is a simple, plaintext authentication scheme. The user name and pass-
word are requested by your networking peer in plaintext. PAP, how-
ever, 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 Handshake Authentication (CHAP) The Challenge Hand-
shake Authentication Protocol (CHAP) is a challenge-response authenti-
cation protocol that uses MD5 to hash the response to a challenge. CHAP
protects against replay attacks by using an arbitrary challenge string per
authentication attempt.
Support Microsoft CHAP Select this check box if you are communicating with
a peer that uses Microsoft CHAP authentication protocol.
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