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Security when backing up files from a server in a DMZ

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We have a requirement to backup files from servers hosted behind a firewall. I've done this before for servers behind a firewall and I can arrange to have 5555 port opened and a small range which I can tie down with in omnirc file etc.

I've now a requirement to do this for DMZ servers, essentially untrusted hosts. I've now been asked:

"Are the files that are being backed up being executed while being passed to tape via the Cell Manager/Media Server"

So apart from the fact we open a small number of ports, which we OK to accept the risk on, is there a risk of malicious executables or other files infecting the CM/MA/

 

Thanks

Mel


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