FiOS Router User Manual
91
© 2009 Verizon. All Rights Reserved.
Warning:
The PPP Authentication settings should not be changed unless
instructed to do so by your ISP.
Login User Name
Enter the user name (provided by the ISP) in this text box.
Login Password
Enter the password (provided by the ISP) in this text box.
Support Unencrypted Password (PAP)
Password Authentication Protocol
(PAP) is a simple, plain-text authentication scheme. The user name and
password are requested by the networking peer in plain-text. 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 Handshake Authentication (CHAP)
Click in this check
box to activate CHAP, a challenge-response authentication 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
Click in this check box if communicating with a peer
that uses Microsoft CHAP authentication protocol.
Support Microsoft CHAP Version 2
Select this check box if communicating
with a peer that uses Microsoft CHAP Version 2 authentication protocol.
PPP Compression
The PPP Compression Control Protocol (CCP) is responsible for configuring,
enabling, and disabling data compression algorithms on both ends of the
point-to-point link. It is also used to signal a failure of the compression/
decompression mechanism in a reliable manner.
For each compression algorithm (
BSD
and
Deflate
), select one of the following
from the drop-down list:
Reject
Selecting this option rejects PPP connections with peers that use the
compression algorithm. If Reject is activated, throughput may diminish.
Allow
Selecting this option allows PPP connections with peers that use the
compression algorithm.
Require
Selecting this option insures a connection with a peer using the
compression algorithm.
