How to stop guests from viewing attachments !!

[Reeve of shinra]

Yep, what the title says. How can I disable guests from viewing attachments? I have a huge spike in guests viewing very large files and thats bad for the bandwidth. thanks!!

[TECK]

admin options, usergroup

[Reeve of shinra]

Already set it so that guests cant view the board, somehow that doesnt seem to be helping. grrr

[TECK]

is there.

regards,
nakkid.