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Using CERN ACB on CERN Linux 7.2.1/7.3.1

 


Foreseen closure of the ACB service

During 2004, it is foreseen to close the ACB service

Please see additional information for the after-ACB era on the web site http://cern.ch/ras


Temporary measure from June 30th 2004

Toll-free 0800 numbers no longer available

Callback service no longer available

User pays the entire communication cost


This page contains recipes for configuring CERN ACB service on CERN Linux 7.2.1/7.3.1 using modem connection. Currently we do not have the recipe for ISDN not having access to it.

Prerequisites

  • Read ACB documentation.
  • Make sure you are registered for the service
  • pppd with MS-CHAP (Microsoft Challenge Handshake Authentication Protocol) and CBCP (CallBack Control Protocol) support compiled in:
    Warning: Standard Red Hat Linux 7.X pppd does not support CBCP correctly
    If you are using this distribution you must update your pppd package to the CERN patched version:
    ppp-2.4.1-2.cern.i386.rpm (sources: ppp-2.4.1-2.cern.src.rpm)
    CERN Linux 7.2.1/7.3.1 versions already include this update.

    Dial-In

    This is the recommended solution: However it may not work in some areas as CallerID must be transffered with your call. If in doubt , please try it first.

    Command line script
    Edit /etc/ppp/chap-secrets. It should contain following lines:
    # Secrets for authentication using CHAP for ACB V90
    # client                        server                          secret                       IP addresses
    CERN\NICELOGIN     RAS-CERN                  NICEPASSWORD
    RAS-CERN                  CERN\NICELOGIN     NICEPASSWORD
    

    Substitute your NICE login id and password for NICELOGIN and NICEPASSWORD respectively.
    Next download acb.sh script and save it as /usr/bin/acb.sh (Do not forget to make it executable - chmod +x /usr/bin/acb.sh).
    You must edit the acb.sh script and change user settings:
    • RASPHONE="XXXXXXXX"
    • MYPHONE="XXXXXXX"
    • MYLOGIN="XXXXXXX"
    (see the script for the description)
    To connect type (as root on your machine) /usr/bin/acb.sh.
    To disconnect press Ctrl-C.



GUI tools

[DESCRIPTION NOT READY YET]

Callback

The only callback method we support is using the
Command line script
Use the description above (In dialin section): The same setup can be used (make sure to change phone number in acb.sh script.
GUI tools (unsupported)

Troubleshooting

  • Are you registered ?
  • Enable detailed logging:
    Add debug option to pppd.
    Reconfigure your syslog to log everything:
    Edit /etc/syslog.conf: Put there a line:
    . /var/log/messages
    
    then restart it:
    /sbin/service syslog restart
    

  • Retry with logging enabled (prefferably using the command line script method, it's much easier to debug):
    Watch /var/log/messages for any obvious problem.
  • Still does not work ?
    Open support call to linux.support@cern.ch. Please include the debugging information obtained following the recipe above, we are unable to resolve any call not including it.
    Jaroslaw.Polok@cern.ch">Jaroslaw.Polok@cern.ch