Does the Ciphertex NAS retain the file/folder permissions for Linux based operating systems during a file restore?
Yes, the attributes will be preserved by using Remote Replication (rsync) on the NAS.
And if you are using NFS with cp command, you will have to specify the parameter to keep the attributes. For example:
# cp -af --preserve=mode,ownership,timestamps M_CX-5000_20080528_V2-1-0_CHT.zip /share/MyShare/