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   Linux FAQ > 7. Solutions to Common Miscellaneous Problems
Question:  7.11. Some Programs Allow Logins with No Password.
Answer:

You probably have the same problem as in ("Some Programs (E.g. xdm) Won't Allow Logins."), with an added wrinkle.

If you are using shadow passwords, you should put a letter `x' or an asterisk in the password field of /etc/passwd for each account, so that if a program doesn't know about the shadow passwords it won't think it's a passwordless account and let anyone in.


This FAQ is from Linux Frequently Asked Questions with Answers, maintained by Robert Kiesling

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