Connection List/Authentication - ADTRAN Express L128T S User Manual

Chapter 3. Terminal Menu Operation
To delete an unused profile, use the D key when the cursor is
over the number in the Num column. Once deleted, the
profile is permanently removed as soon as the Connection List
is saved. Items may be deleted when DEL appears below the
status bar.

Connection List/Authentication

The authentication menu contains the required parameters for the au-
thentication of the PPP peer and for being authenticated by the PPP
peer. (PPP peer refers to the WAN's far-end device, e.g., another rout-
er or bridge.)
Authentication is applied between the Express L128T S/T and the PPP
peer as follows:
1. The Express L128T S/T as the authenticator:
• When answering an incoming call:
• Express L128T S/T uses PPP method configured in
Configuration/Security/PPP.
• Authenticatee's username is looked up in all active
Connection List profiles (Rx Username).
• If found, the Rx Password is used for authenticating.
• If not found, DEFAULT entry's Rx Password is used if Rx
Username is blank.
When answering a call, the Express L128T S/T does not know
who the PPP peer is until the authentication phase is
completed. Two PPP protocols (EAP and CHAP) require the
authenticator to transmit a username which the authenticatee
uses to cross reference the password to use. Since the PPP peer
is unknown before the authentication phase is over, the
Express L128T S/T uses the Tx Username in the DEFAULT
profile to identify itself. If Tx Username is blank,
Configuration/System Info/System Name is used. If that
is blank, then the word "ADTRAN" is used.
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