i do not know the offizial size, but i tested with a 4GB ISO file where an 8 times zipped icar was included. GAM was able to detect and block.
Just note, scanning such big files needs some or more storage on MWGs disc. Because, if you have a multiple time compressed file and the file includes compressed files again, the used space on disk could be huge.
I often to this:
- changing to the alternate disc schema using mwg-cache-wizard.
- implementing a rule to block the request if there are to many files or to many levels in a compressed file.