6.10. pam_ftp - module for anonymous access
Prev | Chapter 6. A reference guide for available modules | Next

## 6.10. pam_ftp - module for anonymous access

`pam_ftp.so` [ debug ] [ ignore ] [ users=`XXX,YYY,` ...]

### 6.10.1. DESCRIPTION

pam_ftp is a PAM module which provides a pluggable anonymous ftp mode of access.

This module intercepts the user's name and password. If the name is ftp or anonymous, the user's password is broken up at the @ delimiter into a PAM_RUSER and a PAM_RHOST part; these pam-items being set accordingly. The username (PAM_USER) is set to ftp. In this case the module succeeds. Alternatively, the module sets the PAM_AUTHTOK item with the entered password and fails.

This module is not safe and easily spoofable.

### 6.10.2. OPTIONS

debug

  Print debug information.

ignore

  Pay no attention to the email address of the user (if supplied).

ftp=XXX,YYY,...

  Instead of ftp or anonymous, provide anonymous login to the comma separated list of users: ``XXX,YYY,...``. Should the applicant enter one of these usernames the returned username is set to the first in the list: XXX.

### 6.10.3. MODULE TYPES PROVIDED

Only the `auth` module type is provided.

### 6.10.4. RETURN VALUES

PAM_SUCCESS

  The authentication was successful.

PAM_USER_UNKNOWN

  User not known.

### 6.10.5. EXAMPLES

Add the following line to `/etc/pam.d/ftpd` to handle ftp style anonymous login:

    #
    # ftpd; add ftp-specifics. These lines enable anonymous ftp over
    #       standard UN*X access (the listfile entry blocks access to
    #       users listed in /etc/ftpusers)
    #
    auth    sufficient  pam_ftp.so
    auth    required    pam_unix.so use_first_pass
    auth    required    pam_listfile.so \
               onerr=succeed item=user sense=deny file=/etc/ftpusers

### 6.10.6. AUTHOR

pam_ftp was written by Andrew G. Morgan <morgan@kernel.org>.

Prev | Up | Next
6.9. pam_filter - filter module | Home | 6.11. pam_group - module to modify group access