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)

X-ISP (http://xisp.hellug.gr)

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