NAME¶

ftpd_selinux - Security-Enhanced Linux policy for ftp daemons.

DESCRIPTION¶

Security-Enhanced Linux provides security for ftp daemons via flexible mandatory access control.

FILE_CONTEXTS¶

SELinux requires files to have a file type. File types may be specified with semanage and are restored with restorecon. Policy governs the access that daemons have to files.

Allow ftp servers to read the /var/ftp directory by adding the public_content_t file type to the directory and by restoring the file type.

semanage fcontext -a -t public_content_t "/var/ftp(/.*)?"

restorecon -F -R -v /var/ftp

Allow ftp servers to read and write /var/tmp/incoming by adding the public_content_rw_t type to the directory and by restoring the file type. This also requires the allow_ftpd_anon_write boolean to be set.

semanage fcontext -a -t public_content_rw_t "/var/ftp/incoming(/.*)?"

restorecon -F -R -v /var/ftp/incoming

 

BOOLEANS¶

SELinux policy is based on least privilege required and may also be customizable by setting a boolean with setsebool.

Allow ftp servers to read and write files with the public_content_rw_t file type.

setsebool -P allow_ftpd_anon_write on

Allow ftp servers to read or write files in the user home directories.

setsebool -P ftp_home_dir on

Allow ftp servers to read or write all files on the system.

setsebool -P allow_ftpd_full_access on

Allow ftp servers to use cifs for public file transfer services.

setsebool -P allow_ftpd_use_cifs on

Allow ftp servers to use nfs for public file transfer services.

setsebool -P allow_ftpd_use_nfs on

system-config-selinux is a GUI tool available to customize SELinux policy settings.

AUTHOR ¶

This manual page was written by Dan Walsh <dwalsh@redhat.com>.

SEE ALSO¶

selinux(8), ftpd(8), setsebool(8), semanage(8), restorecon(8)