allow-tar-root-dirs
If you use the on-the-fly TAR feature, which allows a user to download
a whole directory tree at a time, you probably want to disallow users from
TARring directories in the root directory. Doing a TAR on
/pub could result in an extremely large amount of data and stressful
to your server.
You can also restrict other directories from being TARred by
creating a file called .notar in directories you want to restrict.
Examples:
allow-tar-root-dirs=no
allow-tar-root-dirs=yes
Recommendation: