Managed to successfully configure pppd to use PAM (
/etc/pam.d/ppp) for authentication steps (used
login option in addition to
auth). However, this seems to work only for PAP (
When switching to require chap/mschap the PAM method no longer works. I just get an error in the log: "User X cannot authenticate with CHAP". Any way to make it work? Because how I understand it, PAP is clear text while (MS)CHAP implementations support challenge/response or encryption methods (hence more secure).