/etc/pam.d/ppp is in ppp 2.4.5-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | #%PAM-1.0
# Information for the PPPD process with the 'login' option.
auth required pam_nologin.so
@include common-auth
@include common-account
@include common-session
|