Cent-OS Stop user deleting .htm file?

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http://stackoverflow.com – Hi guys I have set up a small shared hosting set up for friends. I have set the file chmod permissions to chmod 711 /home chmod 711 /home/testuser chmod 755 /home/testuser/public_html chmod o+r /home/testuser/public_html/index.htm How do I stop the user connected to their own ftp from deleting the html.htm file and also with the public dir set to chmod 755 I find they can't do anything in the directory such as upload/delete? Additional info: I have run setsebool -P httpd_enable_homedirs true chcon -R -t httpd_sys_content_t /home/testuser/public_html but no effect? (HowTos)