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I am trying to use a Redhat as a dial in server. I have internal modems that answer a dial in but pam insists on authenticating against system accounts instead of pap/chap as I have pppd configured. I can see that /etc/pam.d/ppp is configured to give the results that I am seeing but I can't see how to change it.
An older non redhat machine (non pam) works as expected.
Check that the global, session or connection configurations do not include the 'login' option. With this option enabled, pppd will also check PAP credentials using PAM as a way to restrict dial-in to a sub-set of users with login accounts.
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