Hello,
  I've been trying to set up network filtering, and am having no luck.  I'm trying to block certain folders on a NAS (DNS-320).  My 8 yo insists that watching The Walking Dead is appropriate.  So, I need to block specific subfolders so he can't access them.  I would like to keep the NAS available, because there are some ebooks there that he copies to his tablet (Blackberry Playbook) to read. I DON'T want to password protect the DNS-320, because I stream the videos, mainly using XBMC / OpenElec with SAMBA shares. (If not, I can block the table from the whole NAS.)  I prefer to block by MAC so there are no IP switches that happen.
  I also would like to block certain website (youtube) at specific times.  Is that possible?  Or I can turn off internet for the specified MACs.
  I wanted to use FREEDNS for the internet filtering, but my providers DSL modem won't keep the changes to DNS server, so that's out.
  Oh, yeah.  DIR-655 B1 2.10NA.
Thanks,
  Gene