Connection with your ISP will be handled by PPP. The PPP Howto document will give you very detailed information about this protocol and how to set-up its numerous parameters.

Through the LEAF packages configuration menu get access to pppatm configuration. The following menu will show-up:

                        pppatm configuration files

        1) ISP pppd options
        2) System wide pppd options
        3) chap secret
        4) pap secret
        5) pppd daemon script

  q) quit
  ----------------------------------------------------------------------------
        Selection:

Enter 1) and adjust the corresponding /etc/ppp/peers/dsl-provider file:

#
# Adjust here VP/VC - depends on country & ISP
# UK/BT: 0.38 - US/BE/FR: 8.35
#
plugin /usr/lib/pppd/pppoatm.so 0.38
#
# If chap or pap identification uncomment the #name "ISPUserID" line
# and replace ISPUserID with your ISP user name
# There should be a matching entry in /etc/ppp/pap-secrets or chap-secrets
#
#name "ISPUserID"
lock
noipdefault
noauth
defaultroute
hide-password
lcp-echo-interval 20
lcp-echo-failure 3
maxfail 0
persist

The most important parameters in this file are the VP.VC combination which depends on your country and/or your ISP and the name parameter.

You should not need to adjust 2).

Edit either the CHAP (Entry 3) or PAP (Entry 4) option to set up how your system authenticates. If you edit chap, replace #ISPUserID and ISPUserPassword this the relevant information.

# Secrets for authentication using CHAP
# client        server  secret                  IP addresses
#ISPUserID      *       ISPUserPassword

ISPUserID must exactly match the entry that you made for the name parameter in Entry 1) "ISP pppd options" file. The "*" can be replaced with the IP address or name of the server you are dialling into if you know it. Usually, an asterisk is sufficient.

If you want to authenticate using PAP, add the same entry to the PAP item instead.

Backup the pppatm.lrp package.