Hi all,

I'm administrating a BackupPC server and I'm concerned about the security of 
the 
whole system.

I configured the linux clients as unpriviledged users doing sudos for rsyncs to 
limit the risk of intrusion from the backupPC server to the clients as 
described 
in the FAQ : 
http://backuppc.sourceforge.net/faq/ssh.html#how_can_client_access_as_root_be_avoided

But I found a simple way to screw up the client when the backupPC server is 
corrupted :

It is easy to empty some (or all) files of a backup :

root@backuppc:/data/backuppc/pc/172.16.2.44/3/f%2f/fhome/fjschaeff# cat 
/dev/null > f.bashrc

And then, when the client restores the file, it gets an empty file.

Is there a checking mechanism to ensure the integrity of the restored files ? 
i.e. the server can check that the files he is about to restore is the same as 
the one he stored previously ?

Cheers,

Jonathan

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