rsync_selinux8

Overview

Security-Enhanced Linux secures the rsync server via flexible mandatory access control.

File_contexts

SELinux requires files to have an extended attribute to define the file type. Policy governs the access daemons have to these files. If you want to share files using the rsync daemon, you must label the files and directories public_content_t. So if you created a special directory /var/rsync, you would need to label the directory with the chcon tool.

chcon -t public_content_t /var/rsync

To make this change permanent (survive a relabel), use the semanage command to add the change to file context configuration:

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

This command adds the following entry to /etc/selinux/POLICYTYPE/contexts/files/file_contexts.local:

/var/rsync(/.*)? system_u:object_r:publix_content_t:s0

Run the restorecon command to apply the changes:

restorecon -R -v /var/rsync/

Sharing files

If you want to share files with multiple domains (Apache, FTP, rsync, Samba), you can set a file context of public_content_t and public_content_rw_t. These context allow any of the above domains to read the content. If you want a particular domain to write to the public_content_rw_t domain, you must set the appropriate boolean. allow_DOMAIN_anon_write. So for rsync you would execute:

setsebool -P allow_rsync_anon_write=1

Booleans

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