User`s manual

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724-746-5500 | blackbox.com Page 60
 You must select the Authentication Type to apply to the dial-in connection. The console server
uses authentication to challenge Administrators who dial-in to the console server. (For dial-in
access, the username and password received from the dial-in client are verified against the local
authentication database stored on the console server). The Administrator must also configure
the client PC/workstation to use the selected authentication scheme. Select PAP, CHAP,
MSCHAPv2, or None, and click Apply.
None With this selection, no username or password authentication is required for
dial-in access. We do not recommend this.
PAP Password Authentication Protocol (PAP) is the usual method of user
authentication used on the internet: sending a username and password to a
server where they are compared with a table of authorized users. While most
common, PAP is the least secure of the authentication options.
CHAP Challenge-Handshake Authentication Protocol (CHAP) is used to verify a user's
name and password for PPP Internet connections. It is more secure than PAP,
the other main authentication protocol.
MSCHAPv2 Microsoft Challenge Handshake Authentication Protocol (MSCHAP) is
authentication for PPP connections between a computer using a Microsoft
Windows operating system and a network access server. It is more secure than
PAP or CHAP, and is the only option that also supports data encryption.
 Console servers support dial-back for additional security. Check the Enable Dial-Back box and
enter the phone number to call to re-establish an OoB link once a dial-in connection is logged.
Note Chapter 15—Advanced Configuration) has examples of Linux commands that you can use to
control the modem port operation at the command line level.